| United States Patent Application |
20060288853 |
| Kind Code |
A1 |
| FRASCA; JOSEPH FRANKLIN |
December 28, 2006 |
Collateral Cavity Electromagnetic Propulsion Guns
Abstract
Narrow collateral cavity electromagnetic guns with two wall
conductor assemblies with a divide plane proximal barrel bus and array
of wall conductors extending therefrom to contact means proximal the
half cavity's narrow wall in each collateral cavity half, like
potential power rails at the narrow walls and a midline power rail in a
wall there between. Each collateral half of projectiles for use therein
have: a propulsion bus orthogonal the cavity's axis continuous the said
midline power rail at one end and propulsion bus-aft shunt current bus
the other, and forward and aft current shunts on both sides of the
projectile's collateral halves. Projectile's current buses co-act with
said assembles, shunts and power rails circulating the gun's current
around both sides of the propulsion buses and the magnet fields of said
circuit interact with the propulsion buses' currents creating forces
therein propelling the projectile through the barrel cavity.
| Inventors: |
FRASCA; JOSEPH FRANKLIN; (ATLANTA,
GA) |
| Correspondence Name and
Address: |
JOSEPH FRANKLIN FRASCA
479 EAST PACES FERRY ROAD, NE APT #1121
ATLANTA
GA
30305-3318
US
|
| Serial
No.: |
308565 |
| Series Code: |
11 |
| Filed: |
April 7, 2006 |
| U.S. Current Class: |
89/8; 124/3 |
| U.S. Class at
Publication: |
089/008;
124/003 |
| Intern'l Class: |
F41B 6/00 20060101
F41B006/00 |
Claims
1. Electromagnetic propulsion guns comprising: a barrel; and a narrow
cavity therein which extends the length of said barrel and having: a
uniform right section profile throughout its length, and a breech end
opening at one end of said barrel, and a muzzle end opening at the
other end of said barrel, and two narrow walls located across the
cavity from each other, and a first and second broad wall located
across the cavity from each other and extending between and adjoining
said narrow walls, and said narrow walls, said broad walls, said breech
end opening, and said muzzle end opening as boundaries, and a central
axis extending between said breech end opening and said muzzle end
opening which is parallel to said walls, and a midline in said first
broad wall divide said wall into two equal half wall parts which extend
the length of said cavity, and a midline in said second broad wall
divide said wall into two equal half wall parts which extend the length
of said cavity and said midline is parallel said first broad wall's
midline, and two equal collateral halves extending the length of said
barrel's cavity with boundaries of each said cavity's collateral half
as: a narrow cavity wall, and said cavity's two broad wall halves
adjoining said narrow cavity wall, and said cavity's muzzle end, and
said cavity's breech end, and the divide plane coincident each said
broad wall's midline, and wherein: the first wall of the cavity's first
collateral half is said half wall part of said first broad wall at said
cavity's first collateral half, and the first wall of the cavity's
second collateral half is said half wall part of said first broad wall
at said cavity's second collateral half, and the second wall of the
cavity's first collateral half is said half wall part of said second
broad wall at said cavity's first collateral half, and the second wall
of the cavity's second collateral half is said half wall part of said
second broad wall at said cavity's second collateral half; and three
barrel rails that: are power rails and parallel to each other and
extend from proximal said cavity's breech end opening to proximal said
cavity's muzzle end opening, and have continuous barrel cavity surface
along their lengths and have power connection means proximal their
breech ends to outside the device for attachment to outside power
source, and two of said power rails are narrow wall power rails located
across the cavity from each other, at, in, or proximal the narrow end
walls of said barrel cavity, and the third said power rail is the
midline power rail located at the midline of said cavity's second broad
wall, and during said gun's operation, said narrow wall power rails
have the same polarity with reference said midline power rail; and a
first wall conductor assembly located in said first wall of said
cavity's first collateral half and a first wall conductor assembly
located in said first wall of said cavity's second collateral half and
each said first wall conductor assembly comprising: a barrel bus which
is: in said first wall with said assembly, and adjacent, parallel and
in close proximity said midline of said cavity's first broad wall, and
proximal and electrically isolated from said barrel bus of said first
wall conductor assembly of the cavity's other collateral half, and a
wall conductor array which: is in said first wall with said assembly
and is proximal or at the cavity surface of said first wall, and each
wall conductor of said array: is parallel to each other, and is spaced
from each other, and is orthogonal said cavity's central axis, and has
at one end, electrical continuity with said barrel bus and extends from
proximal said barrel bus to proximal the narrow cavity wall of the
cavity's collateral half with said assembly, and contact means for each
wall conductor of said array of wall conductors and each said contact
means: is located proximal its wall conductor's barrel bus distal end,
and has electrical continuity with said conductor thereat, and is in a
mating opening thereat into the barrel cavity, and has surface in the
barrel cavity; and a second wall conductor assembly located in said
second wall of said cavity's first collateral half, and a second wall
conductor assembly located in said second wall of said cavity's second
collateral half, and each said second wall conductor assembly
comprising: a barrel bus which is: in said second wall with said
assembly and adjacent, parallel, in close proximity and electrically
isolated from said midline power rail and said barrel bus of the second
wall conductor assembly of the cavity's other collateral half, and a
wall conductor array which: is in said second wall with said assembly,
and is proximal or at the barrel cavity surface of said wall, and each
wall conductor of said array: is parallel to each other, and is spaced
from each other, and is orthogonal said cavity's axis, and has at one
end, electrical continuity with said barrel bus, and extends from
proximal said barrel bus to proximal the narrow cavity wall of the
cavity's collateral half with said assembly, and contact means for each
wall conductor of said array of wall conductors and each said contact
means: is located proximal its wall conductor's barrel bus distal end,
and has electrical continuity with its wall conductor thereat, and is
in a mating opening thereat into the barrel cavity, and has surface in
the barrel cavity; and projectiles for propulsion through said barrel
cavity and each said projectile having: a central axis that is, with
said projectile in said barrel cavity, coincident or very close and
parallel said cavity's central axis, and a muzzle end that is, with
said projectile in said barrel cavity, said projectile's end closest
said cavity's muzzle end opening, and a breech end that is, with said
projectile in said barrel cavity, said projectile's end closest said
cavity's breech end opening and, a first broad surface on one side, and
a second broad surface on its side lateral said first side, and a
midline in each said broad surface extending between said projectile's
breech and muzzle ends, and dividing each said broad surface into two
equal areas, and a divide plane coincident with said broad surfaces'
midlines divide said projectile into a first collateral half and a
second collateral half, and, wherein: said equal area of said first
broad surface in said projectile's first collateral half is the first
surface of said first collateral half and said equal area of said first
broad surface in said projectile's second collateral half is the first
surface of said second collateral half and said equal area of said
second broad surface in said projectile's first collateral half is the
second surface of said first collateral half and said equal area of
said second broad surface in said projectile's second collateral half
is the second surface of said second collateral half, and, with said
projectile in said barrel's cavity, said projectile's: midlines, divide
plane, and central axis are coincident or very close and parallel said
cavity's divide plane, and first collateral half is in said barrel
cavity's first collateral half, and second collateral half is in said
barrel cavity's second collateral half, and said first surface of its
first collateral half is proximal said first wall of the cavity's first
collateral half, and said second surface of its first collateral half
is proximal said second wall of the cavity's first collateral half, and
said first surface of its second collateral half is proximal said first
wall of the cavity's second collateral half and said second surface of
its second collateral half is proximal said second wall of the cavity's
second collateral half; and a propulsion bus in each said collateral
half of each said projectile, and each said propulsion bus: is located
midway between the projectile's muzzle and breech ends, and is oriented
orthogonal said projectile's central axis, and extends from proximal
said divide plane of said projectile, whereat it has surface that has,
with said projectile in said barrel cavity, continuous electrical
continuity with said midline power rail's cavity surface to proximal
the edge of said projectile's collateral half that is distal said
projectile's divide plane and whereat said propulsion bus has
continuous electrical continuity with the propulsion bus-aft shunt
current bus in said projectile's collateral half, and each said
projectile's collateral half has: a first forward current shunt that:
is located in said collateral half's first surface between the
propulsion bus of said collateral half and the muzzle end of the
projectile, and, with said projectile in the barrel cavity, is proximal
the narrow wall power rail of the cavity's collateral half with said
projectile's collateral half, and has surface that has continuous
electrical continuity with said cavity surface of said narrow power
rail, and has surface at and that has continuous electrical continuity
with said first wall conductor assembly of said cavity's collateral
half via said assembly's contact means at the barrel cavity location of
said forward shunt's surface at any instant; and each said projectile's
collateral half has: a first aft current shunt that: is located in said
first surface of said collateral half between the propulsion busof said
collateral half and the breech end of said projectile, and has
continuous electrical continuity with the aft shunt-forward shunt
current bus of said projectile's collateral half, and, with said
projectile in said barrel's cavity, is proximal the narrow wall of the
cavity's collateral half with said projectile's collateral half and,
has surface at and that has continuous electrical continuity with said
first wall conductor assembly of said cavity's collateral half via said
assembly's contact means at the barrel cavity location of said aft
current shunt's surface at any instant; and each said projectile's
collateral half has: a second forward current shunt that: is located in
said second surface of said projectile's collateral half between said
propulsion bus and the muzzle end of the projectile, and is lateral
said first forward current shunt of said collateral half, and has
continuous electrical continuity with the aft shunt-forward shunt
current bus of said projectile's collateral half, and, with said
projectile in the barrel's cavity, is proximal the narrow wall of said
cavity's collateral half with said projectile's collateral half, and
has surface at and that has continuous electrical continuity with said
second wall conductor assembly of said cavity's collateral half via
said assembly's contact means at the barrel cavity location of said
second forward current shunt's surface at any instant; and each said
projectile's collateral half has: a second aft current shunt that: is
located in said second surface of said projectile's collateral half
between the propulsion bus of said collateral half and the breech end
of said projectile, and has continuous electrical continuity with the
propulsion bus-aft shunt current bus of said projectile's collateral
half, and, with said projectile in said barrel's cavity, is proximal
the narrow wall of the cavity's collateral half with said projectile's
collateral half and has surface at and that has continuous electrical
continuity with said second wall conductor assembly of said cavity's
collateral half via said assembly's contact means at the barrel cavity
location of said aft current shunt's surface at any instant; and said
aft shunt-forward shunt current bus in each collateral half of said
projectile between and connecting the first aft current shunt and the
second forward current shunt of said projectile's collateral half, and
proximal said current shunts in said collateral half; and said
propulsion bus-aft shunt current bus in each collateral half of said
projectile between and connecting the second aft current shunt and the
propulsion bus of said projectile's collateral half, proximal said
current shunts in said collateral half.
2. Electromagnetic propulsion guns as claimed in claim 1 wherein the
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail, and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied to the power rails,
provides a short circuit between said power rails until vaporized and
thereby freeing the projectile for traverse of the barrel's cavity.
3. Electromagnetic propulsion guns as claimed in claim 1 wherein the
projectile is retained at the breech end of the barrel's cavity for
release and propulsion in said cavity towards the barrel's muzzle on
application of sufficient power to the power rails.
4. Electromagnetic propulsion guns as claimed in claim 3 wherein the
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied to the power rails,
provides a short circuit between said power rails until vaporized and
thereby freeing the projectile for traverse of the barrel's cavity.
5. Electromagnetic propulsion guns comprising: a barrel; and a narrow
cavity therein which extends the length of said barrel and having: a
uniform right section profile throughout its length, and a breech end
opening at one end of said barrel, and a muzzle end opening at the
other end of said barrel, and two narrow walls located across the
cavity from each other, and a first and second broad wall located
across the cavity from each other and extending between and adjoining
said narrow walls and said narrow walls, said broad walls, said breech
end opening, and said muzzle end opening as boundaries, and a central
axis extending between said breech end opening and said muzzle end
opening which is parallel to said walls, and a midline in said first
broad wall divide said wall into two equal half wall parts which extend
the length of said cavity, and a midline in said second broad wall
divide said wall into two equal half wall parts which extend the length
of said cavity and said midline is parallel said first broad wall's
midline ,and `two equal collateral halves extending the length of said
barrel's cavity with boundaries of each said cavity's collateral half:
a narrow cavity walls, and the cavity's two broad wall halves adjoining
said narrow cavity wall, and the cavity's muzzle end, and the cavity's
breech end, and the divide plane coincident both said broad wall's
midlines and wherein the first wall of the cavity's first collateral
half is said half wall part of said first broad wall at said cavity's
first collateral half and the first wall of the cavity's second
collateral half is said half wall part of said first broad wall at said
cavity's second collateral half and the second wall of the cavity's
first collateral half is said half wall part of said second broad wall
at said cavity's first collateral half and the second wall of the
cavity's second collateral half is said half wall part of said second
broad wall at said cavity's second collateral half; and three barrel
rails which: are power rails and parallel to each other and extend from
proximal said cavity's breech end to proximal said cavity's muzzle end,
and have continuous barrel cavity surface along their lengths and have
power connection means proximal their breech ends to outside the device
for attachment to an outside power source; and two of said power rails
are narrow wall power rails located across the cavity from each other,
at, in, or proximal the narrow end walls of said barrel cavity, and the
third said power rail is the midline power rail located at the midline
of the cavity's second broad wall, and during said gun's operation,
said narrow wall power rails have the same polarity with reference said
midline power rail; and a first wall conductor assembly located in said
first wall of said cavity's first collateral half, and a first wall
conductor assembly located in said first wall of said cavity's second
collateral half, and each said first wall conductor assembly
comprising: a barrel bus which is: in said first wall with said
assembly, and adjacent, parallel and in close proximity said midline of
said cavity's first broad wall, and proximal and electrically isolated
from said barrel bus of said first wall conductor assembly of the
cavity's other collateral half, and an array of wall conductors which
are: in said first wall with said assembly and proximal or at the
cavity surface of said first wall and parallel to each other, and
spaced from each other, and orthogonal said cavity's central axis, and
each wall conductor of said array: has at one end, electrical
continuity with said barrel bus and extends from proximal said barrel
bus to proximal the narrow cavity wall of the cavity's collateral half
with said assembly, and contact means for each wall conductor of said
array of wall conductors and each said contact means: is located
proximal its wall conductor's barrel bus distal end, and has electrical
continuity with its wall conductor thereat, and is in a mating opening
thereat into the barrel cavity, and has surface in the barrel cavity;
and a second wall conductor assembly located in said second wall of
said cavity's first collateral half, and a second wall conductor
assembly located in said second wall of said cavity's second collateral
half, and each said second wall conductor assembly comprising: a barrel
bus which is: in said second wall with said assembly and adjacent,
parallel, in close proximity and electrically isolated from said
midline power rail and the barrel bus of the second wall conductor
assembly of the cavity's other collateral half, and an array of wall
conductors which are: in said second wall with said assembly, and
proximal or at the barrel cavity surface of said wall, and parallel to
each other, and spaced from each other, and orthogonal said cavity's
axis, and each wall conductor of said array: has at one end, electrical
continuity with said barrel bus, and extends from proximal said barrel
bus to proximal the narrow cavity wall of the cavity's collateral half
with said assembly, and contact means for each wall conductor of said
array of wall conductors and each said contact means: is located
proximal its wall conductor's barrel bus distal end, and has electrical
continuity with its wall conductor thereat, and is in a mating opening
thereat into the barrel cavity, and has surface in the barrel cavity;
and projectiles for propulsion through said barrel cavity and each said
projectile having: a central axis that is, with said projectile in said
barrel cavity, coincident or very close and parallel said cavity's
central axis, and a muzzle end that is, with said projectile in said
barrel cavity, said projectile's end closest said cavity's muzzle end
and a breech end that is, with said projectile in said barrel cavity,
said projectile's end closest said cavity's breech end and, a first
broad surface on one side, and a second broad surface on its side
lateral said first side, and a midline in each said broad surface
extending between said projectile's breech end and muzzle end, and
dividing each said broad surface into two equal areas, and the divide
plane which is coincident with both said midlines divide said
projectile into a first collateral half and a second collateral half,
and, wherein said equal area of said first broad surface in said
projectile's first collateral half is the first surface of said first
collateral half and said equal area of said first broad surface in said
projectile's second collateral half is the first surface of said second
collateral half and said equal area of said second broad surface in
said projectile's first collateral half is the second surface of said
first collateral half and said equal area of said second broad surface
in said projectile's second collateral half is the second surface of
said second collateral half, and, with said projectile in said barrel's
cavity, said projectile's: midlines, divide plane, and central axis are
coincident or very close and parallel said cavity's divide plane, and
first collateral half is in said barrel cavity's first collateral half,
and second collateral half is in said barrel cavity's second collateral
half, and said first surface of its first collateral half is proximal
the first wall of the cavity's first collateral half, and second
surface of its first collateral half is proximal the second wall of the
cavity's first collateral half, and first surface of its second
collateral half is proximal the first wall of the cavity's second
collateral half and second surface of its second collateral half is
proximal the second wall of the cavity's second collateral half; and a
propulsion bus in each said collateral half of each said projectile,
and each said propulsion bus: is located midway between the
projectile's muzzle and breech ends and is oriented orthogonal said
projectile's central axis, and extends from proximal said divide plane
of said projectile, whereat it has surface that has, with the
projectile in the barrel's cavity, continuous electrical continuity
with said midline power rail's cavity surface, to proximal the edge of
said projectile's collateral half that is distal the projectile's
divide plane and whereat said propulsion bus has continuous electrical
continuity with the propulsion bus-aft shunt current bus in said
projectile's collateral half; and a first forward current shunt in each
said projectile's collateral half that: is located in said collateral
half's first surface between the propulsion bus of said collateral half
and the muzzle end of the projectile, and, with the projectile in the
barrel cavity, is proximal the narrow wall power rail of the cavity's
collateral half with said projectile's collateral half and has surface
that has continuous electrical continuity with said cavity surface of
said narrow power rail, and has surface at and that has continuous
electrical continuity with said first wall conductor assembly of said
cavity's collateral half via said assembly's contact means at the
barrel cavity location of said forward shunt's surface at any instant;
and said first wall conductor assembly of a collateral half of said
barrel's cavity has additionally, with the projectile in the barrel
cavity, the first forward wall conductors of said barrel cavity's
collateral half comprised of the group of one or more consecutive wall
conductors of said first wall conductor assembly whose contact means at
any instant have said electrical continuity with said first forward
current shunt; and said first forward current shunt of a collateral
half of a projectile in the barrel cavity, via said shunt's continuous
electrical continuity with said narrow wall power rail and said first
forward wall conductors of said cavity's collateral half, maintains
continuous electrical continuity between said narrow wall power rail
and said first forward wall conductors of said cavity's collateral
half; and a first aft current shunt in each said collateral half of
said projectile that: is located in said first surface of said
projectile's collateral half between the propulsion bus of said
collateral half and the breech end of said projectile, and has
continuous electrical continuity with the aft shunt-forward shunt
current bus of said projectile's collateral half, and with the
projectile in the barrel's cavity, is proximal the narrow wall of the
cavity's collateral half with said projectile's collateral half and,
has surface at and that has continuous electrical continuity with said
first wall conductor assembly of said cavity's collateral half via said
assembly's contact means at the barrel cavity location of said aft
current shunt's surface at any instant; and said first wall conductor
assembly of a barrel's collateral half has additionally, with the
projectile in the barrel cavity, the first aft wall conductors of said
barrel's collateral half comprised of the group of one or more
consecutive wall conductors of said first wall conductor assembly whose
contact means at any instant have electrical continuity with said first
aft current shunt; and said first aft current shunt of a projectile's
collateral half in the barrel cavity, via said shunt's continuous
electrical continuity with said aft shunt-forward shunt current bus and
said first aft wall conductors of said cavity's collateral half,
maintains continuous electrical continuity between said aft
shunt-forward shunt current bus and said first aft wall conductors of
said cavity's collateral half; and, said barrel bus of said first wall
conductor assembly in each barrel cavity's collateral half, with a
projectile in the barrel cavity, maintains continuous electrical
continuity between said first forward wall conductors and said first
aft wall conductors of said cavity's collateral half; and a second
forward current shunt in each said collateral half of said projectile
that: is located in said second surface of said projectile's collateral
half between said propulsion bus and the muzzle end of the projectile,
and is lateral said first forward current shunt of said collateral
half, and has continuous electrical continuity with the aft
shunt-forward shunt current bus of said projectile's collateral half,
and, with the projectile in the barrel's cavity, is proximal the narrow
wall of the cavity's collateral half with said projectile's collateral
half, and has surface at and that has continuous electrical continuity
with said second wall conductor assembly of said cavity's collateral
half via said assembly's contact means at the barrel cavity location of
said second forward current shunt's surface at any instant; and said
second wall conductor assembly of a barrel's collateral half has
additionally, with the projectile in the barrel cavity, the second
forward wall conductors of said barrel cavity' collateral half
comprising the group of one or more consecutive wall conductors of said
second wall conductor assembly whose contact means at any instant have
electrical continuity with said second forward current shunt; and said
second forward current shunt of a collateral half of a projectile in
the barrel cavity, via said shunt's continuous electrical continuity
with said aft shunt-forward shunt current bus and said second forward
wall conductors of the barrel cavity's collateral half, maintains
continuous electrical continuity between said aft shunt-forward shunt
current bus and said second forward wall conductors; and a second aft
current shunt in each said collateral half of said projectile that: is
located in said second surface of said projectile's collateral half
between the propulsion bus of said collateral half and the breech end
of said projectile, and has continuous electrical continuity with the
propulsion bus-aft shunt current bus of said projectile's collateral
half, and, with said projectile in said barrel's cavity, is proximal
the narrow wall of the cavity's collateral half with said projectile's
collateral half and has surface at and that has continuous electrical
continuity with said second wall conductor assembly of said cavity's
collateral half via said assembly's contact means at the barrel cavity
location of said aft current shunt's surface at any instant; and said
second wall conductor assembly of a barrel's collateral half has
additionally, with a projectile in the barrel cavity, the second aft
wall conductors of said cavity's collateral half comprising the group
of one or more consecutive wall conductors of said second wall
conductor assembly whose contact means at any instant have electrical
continuity with said second aft current shunt; and said second aft
current shunt of each collateral half of said projectile in its
respective cavity's collateral half, via said shunt's continuous
electrical continuity with said second aft wall conductors of said
barrel's collateral half and said propulsion bus-aft shunt current bus
of said projectile's collateral half, maintains continuous electrical
continuity between said second aft wall conductors and said propulsion
bus-aft shunt current bus; and said barrel bus of said second wall
conductor assembly in each barrel cavity's collateral half, with a
projectile in the barrel cavity, maintains continuous electrical
continuity between the second forward wall conductors and the second
aft wall conductors of said cavity's collateral half; and said aft
shunt-forward shunt current bus in each collateral half of a projectile
is between and connects the first aft current shunt and the second
forward current shunt of said projectile's collateral half, and is
proximal said current shunts in said collateral half, and said aft
shunt-forward shunt current bus of a projectile's collateral half in
its cavity's collateral half, maintains continuous electrical
continuity between said first aft wall conductors of said barrel
cavity's collateral half, via the continuous electrical continuity of
said wall conductors with said first aft current shunt of said
projectile's collateral half, and said the second forward wall
conductors of said cavity's collateral half, via the continuous
electrical continuity of said wall conductors with said second forward
current shunt of said projectile's collateral half; and said propulsion
bus-aft shunt current bus in each collateral half of a projectile is
between and connects the second aft current shunt and the propulsion
bus of said collateral half and is proximal said current shunts in said
collateral half, and said propulsion bus-aft shunt current bus of a
projectile's collateral half, when in its respective collateral half of
the barrel cavity, maintains continuous electrical continuity between
the propulsion bus of said projectile's collateral half and the second
aft wall conductors of said barrel's collateral half, via said wall
conductors continuous electrical continuity with the second aft current
shunt of said projectile's collateral half.
6. Electromagnetic propulsion guns as claimed in claim 5 wherein the
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied to the power rails,
provides a short circuit between said power rails until vaporized and
thereby freeing the projectile for traverse of the barrel's cavity.
7. Electromagnetic propulsion guns as claimed in claim 5 wherein the
projectile is retained at the breech end of the barrel's cavity for
release and propulsion in said cavity towards the barrel muzzle on
application of sufficient power to the power rails.
8. Electromagnetic propulsion guns as claimed in claim 7 wherein a
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied to the power rails,
provides a short circuit between said power rails until vaporized and
thereby freeing the projectile for traverse of the barrel's cavity.
9. Electromagnetic propulsion guns comprising: a barrel; and a narrow
cavity therein which extends the length of said barrel and having: a
uniform right section profile throughout its length, and a breech end
opening at one end of said barrel, and a muzzle end opening at the
other end of said barrel, and two narrow walls located across the
cavity from each other, and a first and second broad wall located
across the cavity from each other and extending between and adjoining
said narrow walls and said narrow walls, said broad walls, said breech
end opening, and said muzzle end opening as boundaries, and a central
axis extending between said breech end opening and said muzzle end
opening which is parallel to said walls, and a midline in said first
broad wall divide said wall into two equal half wall parts which extend
the length of said cavity, and a midline in said second broad wall
divide said wall into two equal half wall parts which extend the length
of said cavity and said midline is parallel said first broad wall's
midline, and two equal collateral halves extending the length of said
barrel's cavity and each said collateral half having boundaries of: a
narrow cavity walls, and the cavity's two broad wall halves adjoining
said narrow cavity wall, and the cavity's muzzle end, and the cavity's
breech end, and the divide plane coincident with both said broad wall's
midlines, and wherein said half wall part of said first broad wall at
said cavity's first collateral half is the first wall of the cavity's
first collateral half, and said half wall part of said first broad wall
at said cavity's second collateral half is the first wall of the
cavity's second collateral half, and said half wall part of said second
broad wall at said cavity's first collateral half is the second wall of
the cavity's first collateral half, and said half wall part of said
second broad wall at said cavity's second collateral half is the second
wall of the cavity's second collateral half; and three barrel rails
that: are power rails and parallel to each other and extend from
proximal said cavity's breech end to proximal said cavity's muzzle end,
and have continuous barrel cavity surface along their lengths and have
power connection means proximal their breech ends to outside the gun
for attachment to an outside power source, and includes two of said
power rails as narrow wall power rails located across the cavity from
each other, at, in, or proximal the narrow end walls of said barrel
cavity, and the third said power rail as the midline power rail located
at the midline of the cavity's second broad wall, and during said gun's
operation, said narrow wall power rails have the same polarity with
reference said midline power rail; and a first wall conductor assembly
located in said first wall of said cavity's first collateral half, and
a first wall conductor assembly located in said first wall of said
cavity's second collateral half, and each said first wall conductor
assembly comprising: a barrel bus which is: in said first wall with
said assembly, and adjacent, parallel and in close proximity said
midline of said cavity's first broad wall, and proximal and
electrically isolated from said barrel bus of said first wall conductor
assembly of the cavity's other collateral half, and an array of wall
conductors which are: in said first wall with said assembly and
proximal or at barrel cavity surface of said first wall and parallel to
each other, and spaced from each other, and orthogonal said cavity's
central axis, and each wall conductor of said array: has at one end,
electrical continuity with said barrel bus and extends from proximal
said barrel bus to proximal the narrow cavity wall of the cavity's
collateral half with said assembly, and contact means for each wall
conductor of said array of wall conductors and each said contact means:
is located proximal its wall conductor's barrel bus distal end, and has
electrical continuity with its wall conductor thereat, and is in a
mating opening thereat into the barrel cavity, and has surface in the
barrel cavity; and a second wall conductor assembly located in said
second wall of said cavity's first collateral half, and a second wall
conductor assembly located in said second wall of said cavity's second
collateral half, and each said second wall conductor assembly
comprising: a barrel bus which is: in said second wall with said
assembly and adjacent, parallel, in close proximity and electrically
isolated from said midline power rail and proximal the barrel bus of
the second wall conductor assembly of the cavity's other collateral
half, and an array of wall conductors which are: in said second wall
with said assembly, and proximal or at the barrel cavity surface of
said wall, and parallel to each other, and spaced from each other, and
orthogonal said cavity's axis, and each wall conductor of said array:
has at one end, electrical continuity with said barrel bus, and extends
from proximal said barrel bus to proximal the narrow cavity wall of the
cavity's collateral half with said assembly, and contact means for each
wall conductor of said array of wall conductors and each said contact
means: is located proximal its wall conductor's barrel bus distal end,
and has electrical continuity with its wall conductor thereat, and is
in a mating opening thereat into the barrel cavity, and has surface in
the barrel cavity; and projectiles for propulsion through said barrel
cavity and each said projectile having: a central axis that is, with
said projectile in said barrel cavity, coincident or very close and
parallel said cavity's central axis, and a muzzle end that is, with
said projectile in said barrel cavity, said projectile's end closest
said cavity's muzzle end and a breech end that is, with said projectile
in said barrel cavity, said projectile's end closest said cavity's
breech end and, a first broad surface on one side, and a second broad
surface on its side lateral said first side, and a midline in each said
broad surface extending between said projectile's breech end and muzzle
end, and dividing each said broad surface into two equal areas, and the
divide plane coincident with both said midlines divide said projectile
into a first collateral half and a second collateral half, and, wherein
said equal area of said first broad surface in said projectile's first
collateral half is the first surface of said first collateral half and
said equal area of said first broad surface in said projectile's second
collateral half is the first surface of said second collateral half and
said equal area of said second broad surface in said projectile's first
collateral half is the second surface of said first collateral half and
said equal area of said second broad surface in said projectile's
second collateral half as the second surface of said second collateral
half, and, with said projectile in said barrel's cavity, said
projectile's midlines, divide plane, and central axis are coincident or
very close and parallel said cavity's divide plane, and its first
collateral half is in said cavity's first collateral half, and its
second collateral half is in said cavity's second collateral half, and
its first surface of its first collateral half is proximal the first
wall of the cavity's first collateral half, and its second surface of
its first collateral half is proximal the second wall of the cavity's
first collateral half, and its first surface of its second collateral
half is proximal the first wall of the cavity's second collateral half,
and its second surface of its second collateral half is proximal the
second wall of the cavity's second collateral half, and a propulsion
bus in each said collateral half, and each said propulsion bus is
located midway between said projectile's muzzle and breech ends and is
oriented orthogonal said projectile's central axis, and extends from
proximal said divide plane of said projectile whereat it has surface
that has, with said projectile in said barrel cavity, continuous
electrical continuity with said midline power rail's cavity surface, to
proximal the edge of said projectile's collateral half that is distal
the projectiles divide plane and whereat said propulsion bus has
continuous electrical continuity with the propulsion bus-aft shunt
current bus in said projectile's collateral half, and a first forward
current shunt in each said collateral half that: is located in said
collateral half's first surface between the propulsion bus of said
collateral half and the muzzle end of the projectile and with the
projectile in the barrel cavity, is proximal the narrow wall power rail
of the cavity's collateral half with said projectile's collateral half
and has surface that has continuous electrical continuity with said
cavity surface of said narrow power rail, and has surface at and that
has continuous electrical continuity with said first wall conductor
assembly of said cavity's collateral half via said assembly's contact
means at the barrel cavity location of said forward shunt's surface at
any instant, and a first aft current shunt in each said collateral half
that: is located in said first surface of said collateral half between
the propulsion bus of said collateral half and the breech end of said
projectile, and has continuous electrical continuity with the aft
shunt-forward shunt current bus of said projectile's collateral half,
and with the projectile in the barrel's cavity, is proximal the narrow
wall of the cavity's collateral half with said projectile's collateral
half and, has surface at and that has continuous electrical continuity
with said first wall conductor assembly of said cavity's collateral
half via said assembly's contact means at the barrel cavity location of
said first aft current shunt's surface at any instant, and a second
forward current shunt in each said collateral half that: is located in
said second surface of said projectile's collateral half between said
propulsion bus and the muzzle end of said projectile, and lateral said
first forward current shunt of said collateral half, and has continuous
electrical continuity with the aft shunt-forward shunt current bus of
said projectile's collateral half, and, with the projectile in the
barrel's cavity, is proximal the narrow wall of the cavity's collateral
half with said projectile's collateral half, and has surface at and
that has continuous electrical continuity with said second wall
conductor assembly of said cavity's collateral half via said assembly's
contact means at the barrel cavity location of said second forward
current shunt's surface at any instant, and a second aft current shunt
in each said collateral half that: is located in said second surface of
said projectile's collateral half between the propulsion bus of said
collateral half and the breech end of said projectile, and has
continuous electrical continuity with the propulsion bus-aft shunt
current bus of said collateral half, and, with said projectile in said
barrel's cavity, is proximal the narrow wall of the cavity's collateral
half with said projectile's collateral half and has surface at and that
has continuous electrical continuity with said second wall conductor
assembly of said cavity's collateral half via said assembly's contact
means at the barrel cavity location of said aft current shunt's surface
at any instant; and said first wall conductor assembly of a collateral
half of said barrel's cavity has additionally, with a projectile in the
barrel cavity, the first forward wall conductors of said barrel
cavity's collateral half comprised of the group of one or more
consecutive wall conductors of said first wall conductor assembly whose
contact means at any instant have said electrical continuity with said
first forward current shunt; and said first forward current shunt of a
collateral half of a projectile in the barrel cavity, via said shunt's
continuous electrical continuity with said narrow wall power rail and
said first forward wall conductors of said cavity's collateral half,
maintains continuous electrical continuity between said narrow wall
power rail and said first forward wall conductors of said cavity's
collateral half and, with power supplied by an outside power supply to
said power rails, maintains a current path between said narrow wall
power rail and said first forward wall conductors of said cavity's
collateral half; and said first wall conductor assembly of a collateral
half of said barrel's cavity has additionally, with a projectile in the
barrel cavity, first aft wall conductors of said barrel's collateral
half comprised of the group of one or more consecutive wall conductors
of said first wall conductor assembly whose contact means at any
instant have electrical continuity with said first aft current shunt;
and said first aft current shunt of a projectile's collateral half in
the barrel cavity, via said shunt's continuous electrical continuity
with said aft shunt-forward shunt current bus and said first aft wall
conductors of said cavity's collateral half, maintains continuous
electrical continuity between said aft shunt-forward shunt current bus
and said first aft wall conductors of said cavity's collateral half,
and, with power supplied by an outside power supply to said power
rails, maintains a current path between said aft shunt-forward shunt
current bus and said first aft wall conductors of said cavity's
collateral half; and said barrel bus of said first wall conductor
assembly in each barrel cavity's collateral half, with a projectile in
the barrel cavity, maintains continuous electrical continuity between
said first forward wall conductors and said first aft wall conductors
of said cavity's collateral half, and with power supplied by an outside
power supply to said power rails, maintains a current path between said
first forward wall conductors and first aft wall conductors of said
cavity's collateral half; and said second wall conductor assembly of a
collateral half of said barrel's cavity has additionally, with the
projectile in the barrel cavity, the second forward wall conductors of
said barrel cavity' collateral half comprised of the group of one or
more consecutive wall conductors of said second wall conductor assembly
whose contact means at any instant have electrical continuity with said
second forward current shunt; and said second forward current shunt of
a collateral half of a projectile in the barrel cavity, via said
shunt's continuous electrical continuity with said aft shunt-forward
shunt current bus and said second forward wall conductors of the barrel
cavity's collateral half, maintains continuous electrical continuity
between said aft shunt-forward shunt current bus and said second
forward wall conductors and, with power supplied by an outside power
supply to said power rails, maintains a current path between said aft
shunt-forward shunt current bus and said second forward wall
conductors; and said second wall conductor assembly of a collateral
half of said barrel's cavity has additionally, with the projectile in
the barrel cavity, the second aft wall conductors of said cavity's
collateral half comprising the group of one or more consecutive wall
conductors of said second wall conductor assembly whose contact means
at any instant have electrical continuity with said second aft current
shunt; and said second aft current shunt of each collateral half of
said projectile in its respective cavity's collateral half, via said
shunt's continuous electrical continuity with said second aft wall
conductors of said barrel's collateral half and said propulsion bus-aft
shunt current bus of said projectile's collateral half, maintains
continuous electrical continuity between said second aft wall
conductors and said propulsion bus-aft shunt current bus, and with
power supplied by an outside power supply to said power rails,
maintains a current path between said second aft wall conductors and
said propulsion bus-aft shunt current bus; and said barrel bus of said
second wall conductor assembly in each barrel cavity's collateral half,
with a projectile in the barrel cavity, maintains continuous electrical
continuity between the second forward wall conductors and the second
aft wall conductors of said cavity's collateral half, and with power
supplied by an outside power supply to said power rails, maintains a
current path between said second forward wall conductors and said
second aft wall conductors of said cavity's collateral half; and said
aft shunt-forward shunt current bus in each collateral half of a
projectile is between and connects the first aft current shunt and the
second forward current shunt of said projectile's collateral half, and
proximal said current shunts in said collateral half, and said aft
shunt-forward shunt current bus of a projectile's collateral half in
its cavity's collateral half, maintains continuous electrical
continuity between said first aft wall conductors of said barrel
cavity's collateral half, via the continuous electrical continuity of
said wall conductors with said first aft current shunt of said
projectile's collateral half, and said second forward wall conductors
of said cavity's collateral half, via the continuous electrical
continuity said wall conductors with said second forward current shunt
of said projectile's collateral half, and with power supplied by an
outside power supply to said power rails, maintains a current path
between said first wall conductor assembly and said second wall
conductor assembly; and said propulsion bus-aft shunt current bus in
each collateral half of a projectile is between and connects the second
aft current shunt and the propulsion bus of said collateral half, and
is proximal said current
shunts in said collateral half, and said propulsion bus-aft shunt
current bus of a projectile's collateral half, when in its respective
collateral half of the barrel cavity, maintains continuous electrical
continuity between the propulsion bus of said projectile's collateral
half and the second aft wall conductors of said barrel's collateral
half, via said wall conductors continuous electrical continuity with
said second aft current shunt of said projectile's collateral half, and
with power supplied by an outside power supply to said power rails,
maintains a current path between said propulsion bus and said second
wall conductor assembly; and in which with an outside power supply
attached to said power rails' connection means and a projectile in or
inserted into the breech end of said barrel cavity, the electric
current path in each collateral half of the gun barrel effecting
electromagnetic propulsion of the projectile in the barrel cavity
towards the barrel's muzzle is extant and the magnetic fields of the
currents in the first and second forward wall conductors and the first
and second aft wall conductors of each said barrel cavity's collateral
half interacts with the current in the propulsion bus of the
projectile's collateral half therein creating in said propulsion buses
forces with cavity axis parallel, muzzle directed components, and the
magnetic fields of the currents in the midline power rail and the
barrel buses in the barrel cavity walls interact with the current in
the propulsion bus in each half of a projectile in the barrel's cavity
creating in each said propulsion bus forces with cavity axis parallel,
muzzle directed components, and the magnetic fields of the currents in
the narrow wall power rails interact with the current in the propulsion
bus in each half of a projectile in the barrel cavity creating in each
said propulsion bus net forces with cavity axis parallel, muzzle
directed components and the above said cavity axis parallel, muzzle
directed force components propel the projectile in its traverse of the
barrel's cavity from breech to muzzle.
10. Electromagnetic propulsion guns as claimed in claim 9 wherein the
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied by an outside power
supply to said power rails, provides a short circuit between said power
rails until vaporized and thereby freeing the projectile for traverse
of the barrel's cavity.
11. Electromagnetic propulsion guns as claimed in claim 9 wherein the
projectile is retained at the breech end of the barrel's cavity for
release and propulsion in said cavity towards the barrel muzzle on
application of sufficient power to the power rails.
12. Electromagnetic propulsion guns as claimed in claim 11 wherein the
projectile is retained at the cavity's breech end by a fuse pin which:
at one end is retained with electrical continuity with the midline
power rail and at its other end is retained with electrical continuity
with the narrow wall power rails and extends through a projectile's
channel there between and with power supplied to the power rails,
provides a short circuit between said power rails until vaporized and
thereby freeing the projectile for traverse of the barrel's cavity.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional application of patent
application Ser. No. 10/707,607 filed Dec. 24, 2003 and claims the
benefit of the filing dates of provisional patent application
60/319,820 filed Dec. 30, 2002, provisional patent application
60/320,208 filed May 21, 2003, and provisional patent application
60/481,159. This application is also related to sister divisional
application Ser. No. 11/164,727 filed Dec. 2, 2005 and sister
divisional application Ser. No. 11 /306,245 filed Dec. 20, 2005.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The following invention is related electromagnetic propulsion
devices such as rail guns. In rail guns a magnetic field perpendicular
to an electrical current path through an armature, interacts with the
path current, creating force on the armature which is perpendicular to
both the current path and the magnetic field. The armature of a rail
gun is located between and has electrical continuity with the gun's
parallel power rails. In the rail gun, armature current flow is
resultant a voltage potential between the power rails.
[0004] 2. Description of Related Art
[0005] The source of the armature accelerating magnetic fields in a
rail gun is often only its very large rail currents. Among the oldest
patented rail gun inventions are those of Fauhon-Villeplee which
include U.S. Pat. No. 1,370,200. The Fauhon-Villeplee devices have, in
addition to the magnetic fields of the rail currents, magnetic fields
for armature acceleration supplied by electromagnets and/or permanent
magnets arranged along the armature's path between the power rails. The
power rails primary function is the supply of armature current. These
devices, although more cumbersome, permits more latitude in accelerator
design.
[0006] Pyrotechnic projectile acceleration means such as gun powders
and more esoteric explosives pervasive civilian and military armaments
today have upper projectile velocity limits. These upper velocity
limits are determined by the molecular velocity of the projectile
propelling explosion gases at the maximum pressure and temperature
permitted in the barrel. Rail guns do not share this limitation.
Therefore, the massive power generation and distribution systems, which
can include cryogenic equipment, to meet the immense electric currents
requirements of rail guns propelling projectiles to hyper velocities
are seen as acceptable overhead.
[0007] With the effective development of gas cartridge fired power
sources similar to those used for emergency power in some commercial
and military aircraft, a significant reduction in the mass of rail gun
support equipment should be possible.
[0008] The equations and examples herein are intended as aides to
practitioners of the arts relevant to the topic devices and are not
part of the claimed devices, and the degree of their veracity is not
intended to reflect adversely on the veracity, spirit, intent, merit or
scope of this application for letters of patent.
[0009] A simplified equation for the increment of force due to one rail
in a rail gun is: 1) df=dq(U.times.B)=(dQdl/dt.times.B)=I dl.times.B=I
dl.times..mu.I/(2.pi.r), where .mu.=4.pi..times.10.sup.-7 H/m. The
force on the armature due to the current in both rails is then: Force =
2 .function. [ I 2 .function. ( 4 .times. .pi. .times. 10 - 7 ) ]
.times. .intg. r o r 1 .times. .times. d r / ( 2 .times. .pi. .times.
.times. r ) = I 2 .function. ( 4 .times. 10 - 7 ) .times. ln .function.
( r a / r o ) .times. .times. Newton 2 ) where r.sub.o is effective
radius of one of the rails and r.sub.a is the straight line distance
from that rail to the second rail.
[0010] The following example illustrates the magnitude of the currents
required by conventional rail guns.
[0011] A hypothetical gun with a 11.43 mm cylindrical bore (0.45
inches) and an approximate 0.6264 m (24 inches) barrel length, fires a
6.48 gram (100 grain) bullet with muzzle velocity of 1524 m/s (5000
ft/s). Ignoring air and barrel friction, a like muzzle velocity would
also result from a steady force of 12344.2 N (2775 lbf) applied to the
bullet during its 0.0008 second barrel traverse. At the muzzle the
bullet has 7525 J (5550 ft-lbf) kinetic energy.
[0012] Applying equation 2, above, for the rail gun force (with an
r.sub.a/r.sub.o ratio of 5.4) for like performance of a 0.6264 m (24
inches) long rail gun propelled bullet and ignoring air and barrel
friction and circuit losses, a current of approximately 135,065 Amperes
at a rail potential of 69.6 Volts is required to produce the 12344.2 N
force on the armature for the 0.8 millisecond barrel traverse time.
[0013] For a like performance in a rail gun that has a 0.6264 m long
barrel (24 inches) cavity with a rectangular right section and a
r.sub.a/r.sub.o ratio of 15, propelling a 6.48 gram (100 grain) flat
projectile with a 0.0422 m (1.66 inches) long propulsion bus, an
approximate current of 106,751 Amperes at a rail potential of 88.1
volts is required to produce the 12344.2 Newton (2775 lbf) force on the
armature for its 0.0008 second barrel traverse.
BRIEF SUMMARY OF THE INVENTION
[0014] The armatures of the topic inventions herein are referred to as
projectiles. In a projectile of the topic invention, there is a
propulsion bus-aft shunt current bus between the propulsion bus and the
second aft current shunt and an aft shunt-forward shunt current bus
between the first aft current shunt and the second forward current
shunt in each half of said projectile's collateral halves.
[0015] When one or both of above said current buses are extant in rail
guns with non-collateral projectiles and barrel cavities, the currents
in each current bus is parallel to the current's direction in the
proximal power rail and there are large forces of attraction of each
said current bus towards the proximal power rail which creates large
frictional forces on the projectile opposing its barrel cavity's
traverse.
[0016] The collateral barrel cavity of the topic invention and the
projectiles used therein eliminate the above said losses due to
friction by utilizing like, but oppositely directed forces of
attraction between the current buses in each collateral half of a
projectile and their proximal power rail which cancel each other and
the need of additional barrel rails and their attendant sliding
continuities to avoid said loss generating force is eliminated.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0017] FIG. 1 is a oblique view of the breech end of a shortened gun of
the Invention with a projectile;
[0018] FIG. 2 is a oblique view of the gun in FIG. 1 shortened and
disassembled;
[0019] FIG. 3 is an oblique sectioned partially cut away view of the
second side of the gun in FIG. 1;
[0020] FIG. 4 is an enlarged view of box `A` in FIG. 3;
[0021] FIG. 5 is an enlarged view of box `B` in FIG. 3;
[0022] FIG. 6 is an oblique view of the first side of a collateral
projectile for the gun in FIG. 1;
[0023] FIG. 7 is an oblique view of the second side of a collateral
projectile for the
[0024] FIG. 8 is an oblique view of the collateral projectile in FIG.
7, disassembled;
[0025] FIG. 9 is an oblique cutaway view of the first side of the first
collateral half of the gun in FIG. 1 to illustrate the current path;
[0026] FIG. 10 is an oblique cutaway view of the second side of the
first collateral half of the gun in FIG. 1 to illustrate the current
path;
[0027] FIG. 11 is an oblique cut-a-way of a projectile retained by a
fuse pin at the gun's breech;
DETAILED DESCRIPTION OF THE INVENTION
[0028] Devices of this invention are electromagnetic propulsion guns
that have a barrel with a narrow cavity, the barrel cavity, extending
there through. The barrel cavity has a breech end opening at one barrel
end and a muzzle end opening at the other barrel end and a central axis
extending said cavity's length which is parallel to the cavity's
surfaces.
[0029] Disregarding slight variations in the cavity's profiles in
barrel cavity right sections taken at the openings in the barrel cavity
walls for wall conductor's contact means and said means therein, right
sections taken to the central cavity axis throughout the cavity are
alike; i.e. cavity's profiles in right section planes to said cavity
axis are alike.
[0030] The cavity's central axis is through the centroid centers of the
cavity's profile in said right sections. Generally the central axis of
an element is the line through the centroid centers of right sections
taken through said element along a path in which said element's
structure is uniform; e.g. the central axis of a barrel power rail is
through the centroid centers of right sections (profiles) to the rail
taken along its length other then at the breech where said rail has
power take input means.
[0031] The gun has a pair of barrel power rails which are located
across the cavity from each other, at, in or proximal the narrow end
walls of the cavity; i.e. each of the pair of barrel power rails is
located diametric the other across the cavity, in, at or proximal the
cavity's narrow end walls. Each said power rail is referred to herein
as a narrow wall power rail and said power rails are parallel to each
other, have continuous barrel cavity surface their lengths, extend from
proximal the barrel's breech end to proximal the barrel's muzzle end
and in the energized gun share the same voltage potential and phase,
and current phase.
[0032] There is a third barrel power rail, the midline power rail,
which is parallel said narrow wall power rails, has continuous cavity
surface its length and which also extends from proximal the barrel's
breech end to proximal the barrel's muzzle end. The midline power rail
is located at the midline of one of the two barrel cavity's broad walls
between and adjoining said barrel cavity's narrow end walls. Each of
said power rail has a power connection means to outside the barrel at
its breech end for connection to and outside power source.
[0033] For orientation and element identification in the following
descriptions of the invention, a hypothetical plane, the divide plane,
is defined as extending the length of the barrel and cavity therein.
The divide plane is coincident with the midline of each of said
cavity's two broad walls between and adjoining the cavity's two narrow
end walls, the cavity's central axis, and the axis of the midline power
rail. The divide plane is not an actual physical entity in the
invention. Projectiles for use in the barrel cavity also have divide
planes which when in the barrel cavity are coincident with the divide
plane of the barrel and barrel cavity.
[0034] The divide plane divides the gun's barrel and cavity therein
into equal halves: the barrel's first collateral half and the barrel's
second collateral half, herein after referred to as the first barrel's
half and the second barrel's half, respectively. The divide plane also
divides the gun barrel's cavity into two equal halves: the cavity's
first collateral half and the cavity's second collateral half, herein
after referred to as the cavity's first half and the cavity's second
half, respectively. In like manner the divide plane of a projectile for
the gun divides the projectile into two equal halves: the projectile's
first collateral half and the projectile's second collateral half,
herein after referred to as the projectile's first half and
projectile's second half.
[0035] With the barrel in the palms (palms up) of the hands, with the
thumbs at the cavity's narrow ends pointing towards the barrel's
muzzle, and the midline power rail distal the palms of the hands, the
barrel's half, the barrel cavity's half and the half of a projectile in
the in the barrel cavity which is proximal the left hand is the
barrel's first half, the cavity's first half and the projectile's first
half, respectively, and the half of the barrel, barrel cavity and
projectile in the barrel cavity which is proximal the right hand is the
barrel's second half, the cavity's second half and the projectile's
second half, respectively.
[0036] Twin elements of the device (i.e. the wall conductor assembles,
the barrel cavity's walls and surfaces, the projectile's side surfaces
and current shunts and shunt surfaces therein, etc.) are referred to
herein as the "first" and the "second" element of the twin elements;
e.g. the first wall conductor assembly or the second wall conductor
assembly of the cavity's second half. Each element of twin elements has
its identification as the "first" or the "second" element dependant on
its proximity to the palm and fingers in the above orientation. An
element of the twin elements in a barrel's first or second half, a
cavity's first or second half, or a projectile's first or second half
which is closest to a hand's palm in the above orientation is the
"first" element and the remaining twin element is the "second" element.
In the figures herein, the broad wall and side of the cavity with the
midline power rail is the second broad wall or side; i.e. the second
broad wall or the second side of the cavity's first and second half.
[0037] In addition to the surface of its narrow cavity wall, each
cavity's half has a first and second (cavity) wall and the projectile
halves have first and second surfaces which in the cavity are proximal
said walls. The divide plane, the narrow end walls, and the breech and
muzzle ends of the barrel cavity where the invention is extant in the
barrel are the boundaries of said four cavity wall segments.
[0038] There is a wall conductor assembly in each of said four cavity
walls; i.e. there is a first wall conductor assembly in the first wall
of the cavity's first half and a second wall conductor assembly in the
second wall of said cavity's half and there is a first wall conductor
assembly in the first wall of the cavity's second half and a second
wall conductor assembly in the second wall of said cavity's half.
[0039] The barrel bus of the wall conductor assembly in the first wall
of the cavity's first half and the barrel bus of the wall conductor
assembly in the first wall of the cavity's second half are each
located, in their respective cavity's half, proximal and parallel to
the divide plane. Said barrel buses are electrically isolated from each
other. The barrel bus of the wall conductor assembly in the second wall
of the cavity's first half and the barrel bus of the wall conductor
assembly in the second wall of the cavity's second half are each
located in their respective cavity's half and said barrel buses are
parallel, proximal and electrically isolated from the midline power
rail and each other.
[0040] An element that is `electrically isolated` from another element
or an `isolated element` is limited in meaning to the lacking a direct
low resistance current path to the neighboring element; i.e. the
electrically isolated element is electrically insulated from its
neighbor; however, an element can be electrically isolated from one
element while having electrical continuity therewith through another
element it is not electrically isolated from and that in turn has
direct or indirect continuity with said isolated element. Magnetic and
electric fields couplings are ignored.
[0041] Each said wall conductor assembly in each cavity half also has
an array of parallel, spaced wall conductors which are orthogonal the
cavity's central axis and at or closely proximal to the surface of the
cavity's wall it is in. Said wall conductors can be equal in length or
have slight variations in length to permit a more even wear of the
current shunts of projectiles traversing the barrel cavity. The barrel
bus of each of the wall conductor assembles in both cavity halves
extends at least from the muzzle proximal edge of the wall conductor at
the breech end of the wall conductor assembly to the breech proximal
edge of the wall conductor at the muzzle end of said assembly. In each
said wall conductor assembly, each wall conductor of said assembly's
array of wall conductors is electrically continuous with said
assembly's barrel bus at said wall conductor's end thereto proximal and
extends therefrom to proximal the narrow wall of its respective
cavity's half. Each wall conductor of the array of wall conductors of
each wall conductor assembly has, at its end distal its assembly's
barrel bus, electrical continuity with a contact means that extends
through a mating opening into the cavity's half with said wall
conductor assembly.
[0042] As the barrel and barrel cavity containing the invention might
extend beyond the array of wall conductors of the wall conductor
assembles in both the breech and muzzle directions, the right section
plane through the muzzle proximal edge of the wall conductor assembles'
wall conductors closest to the muzzle is designated the muzzle end of
the barrel and barrel cavity of the invention as electric circuit
effecting a projectile's acceleration through the barrel cavity of the
invention is open when the projectile's forward current shunt is beyond
this point in its barrel cavity traverse.
[0043] The right section plane through the breech proximal edge of said
assembles' wall conductors closest to the breech is designated the
breech end of the barrel and barrel cavity of the invention as the
projectile's aft current shunts must have electrical continuity with
said wall conductors to initially complete the electric circuit for the
projectile's acceleration through the barrel cavity of the invention.
Therefore, the length along the barrel's length occupied by the wall
conductor assembles arrays of wall conductor is the invention's length
and location along the length of a barrel and barrel cavity which
includes the invention.
[0044] The barrel power rails might extend beyond the invention in
either direction as a source of power for operations in the barrel and
barrel cavity not part of the invention. The barrel bus in like manner
might extend beyond the invention as a possible signal source for
operations in the barrel and barrel cavity not part of the invention.
[0045] The narrow wall power rail in each cavity's half that has
electrical continuity with the first forward current shunt of the
respective projectile's half in barrel cavity might be shortened in
length at its breech end by as much as the distance between the muzzle
proximal edges of the forward and aft current shunts and the midline
power rail might be shortened at its muzzle end by as much as the
distance between the breech proximal edges of the forward current shunt
and propulsion bus surface with continuity said power rail.
[0046] As noted above the invention has two wall conductor assembles in
each cavity's half. The first wall conductor assembly is located in the
first wall of a cavity's half and the second wall conductor assembly is
located in the second wall of said cavity's half. Each wall conductor
assembly extends the length of the barrel and barrel cavity of the
invention. In each barrel's half, one wall conductor assembly can be
the mirror image of the other wall conductor assembly; i.e. the first
wall conductor assembly can be the mirror image of the second wall
conductor assembly in a cavity's half and one cavity's half and
barrel's half can be the mirror image of the second cavity's half and
second barrel's half.
[0047] The projectiles for the device, as noted above, have halves on
either side of their divide plane. Projectiles have a central axis in
its divide plane that, with the projectile in the barrel cavity, is in
the barrel cavity's divide plane and is coincident or close and
parallel the cavity's central axis. All projectile right section
profiles are smaller then the barrel cavity right section profile.
[0048] The projectiles have a breech end and a muzzle end that, when in
the barrel cavity, are the projectile's ends closest to the cavity's
breech and muzzle ends, respectively.
[0049] Each projectile's half has a propulsion bus midway along its
axial extent that is oriented orthogonal the projectile's central axis
and that, when in the barrel cavity, is orthogonal the barrel cavity's
central axis and the direction of traverse through the barrel cavity by
the projectile.
[0050] Herein, when an electrically conducting element of the
projectile has electrical continuity with an electrically conducting
element or elements in the barrel said electrical continuity is sliding
electrical continuity with projectile movement in the barrel cavity.
[0051] When a projectile is in the barrel cavity, one end of the
propulsion bus in each projectile's half has continuous electrical
continuity with the midline power rail.
[0052] The propulsion bus in each projectile's half extends from its
midline power rail continuity across its projectile's half in its
respective cavity's half to proximal the narrow wall of said cavity's
half, where it has continuous electrical continuity with the propulsion
bus-aft shunt current bus of said projectile's half.
[0053] The propulsion bus in each projectile's half in its respective
cavity's half, except for its electrical continuity with the midline
power rail at one end, and its electrical continuity with the
propulsion bus-aft shunt current bus at its other end, is electrically
isolated from other conducting elements of said projectile's half and
the cavity's half and barrel's half said projectile's half is in. The
propulsion bus in each projectile's half divides said projectile's half
into two sections: the muzzle section with the projectile half's muzzle
end and the breech section with the projectile half's breech end.
[0054] Each projectile's half has a first forward current shunt and a
second forward current shunt located in its muzzle section. The first
forward current shunt of a projectile's half in the barrel cavity is at
the projectile's edge that has close proximity with the cavity's half's
narrow end wall and the narrow wall power rail thereat and has surface
that has continuous electrical continuity with the cavity surface of
said power rail. Said first forward current shunt also has surface in
the first side of said projectile's half.
[0055] The second forward current shunt of the topic projectile's half
in the barrel cavity is located lateral to the first forward current
shunt's location in the projectile's half and has surface in the second
side of the said projectile's half.
[0056] The first and second forward current shunts in a projectile's
half are electrically isolated from each other.
[0057] In a projectile's half, the first forward current shunt's
surface in the projectile half's first surface is, when in its
respective cavity's half, located proximal the first wall of said
cavity's half and the wall conductor assembly therein; i.e. the first
wall conductor assembly of said cavity's half. Said shunt surface has
electrical continuity with contact means of said assembly's wall
conductors at said shunt surface's cavity location. The group of one or
more wall conductors of the first wall conductor assembly in the topic
cavity's half whose contact means have electrical continuity at any
instant with said first forward current shunt's surface is referred to
herein as the first forward wall conductors of the cavity's half.
[0058] The first forward current shunt of a projectile's half in its
respective cavity's half, via its surface with continuous electrical
continuity with its proximal power rail and its surface with continuous
electrical continuity with the contact means of the first forward wall
conductors of said cavity's half, maintains continuous electrical
continuity between said power rail and the first wall conductor
assembly and with power supplied to the power rails maintains a current
path between said power rail and said wall conductor assembly.
[0059] In the same collateral half of the projectile, the second
forward current shunt's surface in the projectile's second surface is,
with the projectile's half in its respective cavity's half, located
proximal the second wallf of said cavity's half and the wall conductor
assembly therein; i.e. the second wall conductor assembly of the
cavity's half. Said second forward current shunt's surface, at its
barrel cavity location, has electrical continuity with the contact
means of the second wall conductor assembly's wall conductors thereat.
The group of one or more wall conductors of the second wall conductor
assembly that has electrical continuity, via their contact means, with
said current shunt's surface at any instant are the second forward wall
conductor of the cavity's half. The second forward current shunt of a
projectile's half also has continuous electrical continuity with aft
shunt-forward shunt current bus in the projectile which is located
proximal said shunts in said projectile's half and is between and
connects the second forward current shunt with the first aft current
shunt of the projectile's half.
[0060] The second forward current shunt of a projectile in the barrel
cavity, via its continuous electrical continuity with aft shunt-forward
shunt current bus and its surface with continuous electrical continuity
with the cavity half's second forward wall conductors, maintains
continuous electrical continuity between said current bus and the
second wall conductor assembly and with power supplied to the power
rails maintains a current path between the aft shunt-forward shunt
current bus and said wall conductor assembly.
[0061] Each projectile's half for the device has a first aft current
shunt and a second aft current shunt located in its breech section.
With the projectile in the barrel cavity, the first aft current shunt
of a projectile's half, in its respective cavity's half, has surface in
the first side of the projectile's half and is at the projectile edge
that has close proximity with the narrow cavity wall of said cavity's
half. The second aft current shunt is located in the topic projectile's
half lateral to said first aft shunt's location and has surface in the
second side of said projectile's half. The first and second aft current
shunts are electrically isolated from each other.
[0062] The first aft current shunt's surface in the first surface of
said projectile's half is, with the projectile in the barrel cavity,
located proximal the first surface of the respective cavity's half and
the wall conductor assembly therein; i.e. the first wall conductor
assembly. Said shunt surface, at its barrel cavity location, has
electrical continuity with the contact means of said assembly's wall
conductors thereat. The group of one or more wall conductors whose
contact means at any instant have electrical continuity with the first
aft current shunt's surface are the first aft wall conductors of the
cavity's half. As noted above the first aft current shunt of a
projectile's half also has electrical continuity with the second
forward current shunt of the projectile's half via the aft
shunt-forward shunt current bus of the projectile's half.
[0063] The first aft current shunt of a projectile's half in its
respective cavity's half, via its continuous electrical continuity with
the aft shunt-forward shunt current bus and its surface with continuous
electrical continuity with the first aft wall conductors of the
cavity's half, maintains continuous electrical continuity between said
current bus and the first wall conductor assembly of said cavity's half
and with power supplied to the power rails maintains a current path
between the aft shunt-forward shunt current bus and the first wall
conductor assembly of said cavity's half.
[0064] In a projectile's half the second aft current is located in the
projectile's second surface lateral said first aft current shunt and
the second aft current shunt's surface in said second surface of the
topic projectile's half is, with the projectile's half in its
respective cavity's half, located proximal the second wall of said
cavity's half and the wall conductor assembly therein; i.e. the second
wall conductor assembly of the cavity's half. Said second aft current
shunt surface, at its barrel cavity location, has electrical continuity
with the contact means of the wall conductors of the second wall
conductor assembly thereat. The group one or more wall conductors of
the second wall conductor assembly that has electrical continuity, via
their contact means, with the second aft current shunt's surface at any
instant are the second aft wall conductors. The second aft current
shunt of the topic projectile's half in its respective barrel cavity's
half also has continuous electrical continuity with propulsion bus of
said projectile's half via the propulsion bus-aft shunt current bus
which extends between said second aft current shunt and said propulsion
bus of the projectile's half.
[0065] The second aft current shunt of the topic projectile's half in
its respective cavity's half, via its continuous electrical continuity
with propulsion bus-aft shunt current bus and its surface with
continuous electrical continuity with the second aft wall conductors of
said cavity's half, maintains continuous electrical continuity between
the propulsion bus-aft shunt current bus of said projectile's half and
the second wall conductor assembly of said cavity's half and with power
supplied to the power rails the second aft current shunt of the topic
projectile's half maintains a current path between said propulsion
bus-aft shunt current bus and said wall conductor assembly.
[0066] The barrel bus of each wall conductor assembly in each cavity's
half maintains continuous electrical continuity between the wall
conductors of the assembly which at any instant are the forward wall
conductors and the aft wall conductors of said assembly and maintains a
continuous current path between said forward and aft wall conductors
when power is supplied to the gun.
[0067] A cavity's half (i.e. barrel's half cavity) and the projectile's
half therein is now used to discuss the operation of the gun. The
various stages in the propulsion of a projectile through the barrel
cavity occurring in one half of the barrel cavity and the projectile's
half therein concomitantly occur in the second half of the barrel
cavity and the projectile's half therein.
[0068] With the positive terminal of an outside power supply connected
to the connection lug of the narrow wall power rail of the topic half
cavity and the return terminal connected to the midline power rail, and
with a projectile in the barrel cavity, the current is muzzle directed
in said narrow wall power rail and the magnetic fields of said current
interacts with the current in the propulsion bus in the topic half
projectile creating forces in said propulsion bus with muzzle directed,
cavity axis parallel components. The magnetic fields of the current in
said positive narrow wall power rail also interacts to a lesser degree
with the current in the propulsion bus in the projectile's second half
creating therein forces oppositely directed; i.e. forces with breech
directed, cavity axis parallel components.
[0069] The current continues from said positive rail through the first
forward current shunt of topic half projectile to the forward wall
conductor of the first wall conductor assembly of the topic cavity
half,[i.e. the first forward wall conductors of the cavity half] via
the continuity that the contact means of the wall conductors comprising
the group of forward wall conductors have with surface of the said
forward current shunt. The current is barrel bus directed [i.e. the
current's direction is toward midline power rail] in said forward wall
conductors. The magnetic fields of the current in the forward wall
conductors of the first wall conductor assembly interact with current
in said propulsion bus creating forces in said propulsion bus with
barrel cavity axis parallel, muzzle directed components.
[0070] The current continues from the forward wall conductors of the
first wall conductor assembly in the topic cavity's half to said
assembly's barrel bus, wherein it has breech direction. The magnetic
fields of the current in the barrel bus of the first wall conductor
assembly interacts with the current in the propulsion bus of the topic
projectile's half creating forces in said propulsion bus with cavity
axis parallel, muzzle directed components, additionally, said magnetic
fields interact with the current in the propulsion bus in projectile's
second half also creating forces therein with cavity axis parallel,
muzzle directed components.
[0071] The current continues from the barrel bus to the aft wall
conductors [i.e. the group of one or more wall conductors whose contact
means have electrical continuity with the first aft current shunt at
any instant] of the first wall conductor assembly [i.e. the first aft
wall conductors of the cavity half] and therein toward the narrow
cavity wall of the topic cavity's half. The magnetic fields of the
current in the aft wall conductors of the first wall conductor assembly
in the topic half cavity interact with the current in the propulsion
bus of the projectile's topic half creating forces with muzzle
directed, cavity axis parallel components in said propulsion bus.
[0072] The current continues, from the first aft current shunt to the
second forward current shunt of the projectile's half via the aft
shunt-forward shunt current bus there between in said projectile's
half. The current in said bus is muzzle directed as it is in the
proximal positive power rail (i.e. narrow wall power rail) and there
are large forces of attraction between said power rail and said bus
lateral to the direction of cavity traverse by the projectile. However,
this force is balanced by a like but oppositely directed force between
the like bus and power rail in the second projectile's half and
barrel's second half cavity, respectively.
[0073] The current continues from second forward current shunt to the
forward wall conductors of the second wall conductor assembly of the
topic half cavity; i.e. the current continues via said current shunt's
surface that has continuous electrical continuity with the contact
means of the one or more wall conductor comprising the forward wall
conductors of the second wall conductor assembly at any instant; i.e.
the second forward wall conductors of the topic half cavity. The
current in the forward wall conductors of said second wall conductor
assembly has barrel bus direction, the same direction as the current in
the forward wall conductors of the first wall conductor assembly. The
magnetic fields of the current in the forward wall conductors of the
second wall conductor assembly in the topic cavity's half [i.e. second
forward wall conductors of the cavity half] interact with the current
in the propulsion bus in the projectile's half therein creating forces
in said propulsion bus with muzzle directed, cavity axis parallel
components.
[0074] The current continues from second forward wall conductors to the
barrel bus of the second wall conductor assembly of the topic cavity
half and therein has breech direction. The magnetic fields of the
current in the barrel bus of said second wall conductor assembly
interact with the current in the propulsion bus in the projectile's
topic half creating forces in said propulsion bus with muzzle directed,
cavity axis parallel components, additionally said magnetic fields
interact with the current in the propulsion bus in the projectile's
second half also creating forces therein with cavity axis parallel,
muzzle directed components.
[0075] The current continues from the barrel bus of said second wall
conductor assembly to the aft wall conductors of said assembly; i.e.
the second aft wall conductors of the cavity half. The currents in the
aft wall conductors of said second wall conductor assembly are directed
away from the barrel bus towards the narrow cavity wall of said cavity
half and the positive power rail thereat. The currents direction in the
aft wall conductors of the first wall conductor assembly and in the aft
wall conductors of the second wall conductor assembly in the topic
barrel's half cavity, are the same. The magnetic fields of the current
in the aft wall conductors in said second wall conductor assembly
interacts with the current in the propulsion bus in the topic
projectile's half creating forces in said propulsion bus with muzzle
directed, cavity axis parallel components.
[0076] The current continues to the second aft current shunt via the
electrical continuity of the contact means of the group of one or more
wall conductors comprising the aft wall conductor of the second wall
conductor assembly at any instant with surface of the second aft
current shunt [i.e. second aft wall conductors of the topic cavity
half] and there through via the propulsion bus-aft shunt current bus to
the propulsion bus of the topic projectile's half. The current in said
current bus is muzzle directed as it is in the proximal narrow wall
power rail and there are large forces of attraction between said power
rail and said current bus lateral to the direction a projectile's
cavity traverse. However, this force is also balanced by a like but
oppositely directed force between the like bus and power rail in the
projectile's second half and cavity's second half, respectively.
[0077] The current continues from said current bus to the propulsion
bus in the topic half projectile wherein it is acted on by the magnetic
fields of the current in its surrounding current paths during its
barrel cavity traverse, creating forces therein with components whose
net effect is the propulsion of the projectile through the barrel
cavity.
[0078] Current exits the propulsion bus of the topic projectile's half
to the midline power rail via said propulsion bus's continuous
electrical continuity with said power rail. The current in the midline
power rail is breech directed and the magnetic fields of the current in
the said power rail interact with the current in the propulsion bus in
the topic projectile's half creating forces therein with cavity axis
parallel, muzzle directed components. The magnetic field in the midline
power rail also interacts with the current in the propulsion bus of the
projectile's second half also creating therein forces with cavity axis
parallel, muzzle directed components.
[0079] The magnetic fields of the current in the above described
circuitry surrounding the propulsion bus in a projectile's half
traversing its respective barrel cavity half, interact with the
propulsion bus current in said projectile's half creating forces in the
propulsion bus with muzzle directed, cavity axis parallel components
which propel the projectile in said barrel cavity traverse.
[0080] Regardless the instant polarity of the narrow wall power rails
with reference to the midline power rail, the current direction in the
forward wall conductors of the wall conductor assembles in a cavity's
half is always the same as the current direction in the propulsion bus
of the projectile's half in said cavity's half, the current direction
in the aft wall conductors of the wall conductor assembles in a
cavity's half is always oppositely directed the current direction in
the propulsion bus of the projectile's half in said cavity's half, the
current direction in the barrel buses of the wall conductor assembles
and the current direction in the midline power rail is always the same,
and the current direction in the current buses in the projectile's
halves is always the same as the current direction in their proximal
narrow wall power rail.
[0081] Regardless the common polarity of the narrow wall power rails
with reference the polarity of the midline power rail, the magnetic
fields of the current in the gun has the net effect of propelling a
projectile in the gun's barrel from breech towards muzzle.
[0082] A generalized equation for approximating forces on the
propulsion bus in a projectile's half in this design is: Force = .intg.
r o r x - r midline .times. .times. power .times. .times. rail .times.
I .times. d rx .times. .times. .mu. o .times. I / ( 2 .times. .pi.
.times. .times. r ) - .intg. r x + r midline .times. .times. power
.times. .times. rail 2 .times. r x - r o .times. I .times. d rx .times.
.times. .mu. o .times. I / ( 2 .times. .pi. .times. .times. r ) + 2
.times. ( .9 ) .times. .intg. a r x - r o .times. .times. I .times. d
rx .times. .times. .mu. o .times. I / ( 2 .times. .pi. .times. .times.
r ) + .intg. r midline .times. .times. power .times. .times. rail r x -
r o .times. .times. ( 2 .times. I ) .times. d rx .times. .times. .mu. o
.function. ( 2 .times. I ) / ( 2 .times. .pi. .times. .times. r ) + 4
.times. .intg. L o L 1 .times. I .times. d lx .times. .times. .mu. o
.times. I .times. .times. Cos .times. .times. .alpha. / ( 2 .times.
.pi. .times. .times. d ) . 3 )
[0083] In the above equation the integral limit: r.sub.x is half the
distance between the diametrically opposed narrow walls of the barrel
cavity and the distance from the center line of the midline power rail
to a narrow cavity wall, r.sub.midline power rail is the radius of the
midline power rail, r.sub.o is the distance between the narrow wall
power rail in a cavity's half and the juncture of the propulsion
bus-aft shunt current bus with the propulsion bus in said cavity's
half, a is the distance between a barrel bus and the midline power rail
as measured in the cavity plane common to the center lines of the power
rails, and L.sub.1 and L.sub.0 are the end points of the length common
to both the propulsion bus in a projectile's half and the forward and
aft wall conductors in the wall conductor assembles in the respective
barrel's half cavity.
[0084] The first integral in the above equation acquires the value of
the force in newtons on the propulsion bus in a projectile's half
directed toward the barrel muzzle due to the magnetic fields of the
current I in the narrow wall power rail of the respective cavity's
half.
[0085] The second integral gives the force in newtons on the said
propulsion bus directed towards the breech due to the magnetic fields
of the current I in the narrow wall power rail in the cavity's second
half, and can be approximated by its maximum value of -Ln(2)
.mu..sub.ol.sup.2/(2.pi.) newtons.
[0086] The third integral acquires the value of force in newtons on the
topic half projectile's propulsion bus due to the magnetic fields of
the current in the barrel buses of the first and second wall conductor
assembly of the respective cavity's half.
[0087] The fourth integral acquires the value of force in newtons on
the topic half projectile's propulsion bus due to the magnetic fields
of the currents in the barrel buses of the first and second wall
conductor assembles in the barrel's second half cavity. The 0.9
coefficient in the third and fourth integrals is a correction factor
for the displacement of the center lines of the said barrel buses from
the plane through the center lines of the power rails.
[0088] The fifth integral acquires the force in newtons on the topic
propulsion bus due to the magnetic fields of the current in the midline
power rail. The current therein is twice the current in the narrow wall
power rails and the integral's value is approximately 4 times the value
of the first integral.
[0089] The sixth integral expression is an approximation of the
combined forces on the propulsion bus in the topic projectile's half
attributed to forward and aft wall conductors of the first and second
wall conductor assembles in the topic half cavity. The `d` in the (Cos
.alpha.)/(2.pi.d) term is the instant distance between the center line
of a forward or aft wall conductor and the center line of the
propulsion bus and .alpha. is the instant angle `d` has to said plane
through the power rails' center lines. The (Cos .alpha.)/(2.pi.d) term
has a mean value acquired by computer iteration and is dependant on the
physical dimensions of a particular design and the number of wall
conductors with shunt continuity at any instant and their distribution.
The dl limits are the ends of the minimum common length of said wall
conductors and the topic projectile's propulsion bus and the length
(L.sub.1-L.sub.0) only important regardless the source.
[0090] General Comments
[0091] The right section barrel cavity profiles at the contact means
and their cavity surface ports may have slight irregularities; however,
these irregularities are disregarded herein and said right section
barrel cavity profiles, regardless said irregularities, are regarded as
the same as all other right section barrel cavity profiles.
[0092] Mathematical expressions used herein; e.g. perpendicular,
tangent, parallel, etc., to describe physical characteristics, spacial
orientations etc., are limited in their accuracy to the practical
limitation of any of the manufacturing and assembly methods that might
be used for the device.
[0093] Whether by design or unavoidable, when an arc between the power
rails develops behind the projectile of the invention, it will be
confined to the space immediately behind the projectile's propulsion
bus rather then extend through the entire barrel cavity region behind
the projectile. This is the result of the forces imposed on the arc
current by the magnetic fields of the currents in aft wall conductors.
[0094] Although the wall conductors for devices illustrated herein have
constant cross section areas, in applications where barrel mass is an
important constraint, the cross section area of wall conductors at the
barrel breech, where the conduction time intervals of the wall
conductors are many times the conduction time intervals of wall
conductors located near the muzzle, can be larger then the cross
section areas of wall conductors at the muzzle. There can be one or
more wall conductors, or the equivalent sum in cross section areas to
one or more wall conductors, in contact with a projectile's forward or
aft current shunts.
[0095] Additionally the wall conductors near the breech might be closer
together while still parallel and insulated from each other; i.e. the
wall conductors would no longer have uniform distribution along their
common barrel buss.
[0096] For clarity of presentation, the invention embodiments portrayed
in the following illustrations are chemically bonded together in
assembly. In practical application and for ease of manufacture and
repair, the devices would be assembled using mechanical fastening means
well know in the arts.
[0097] Molding methods well know in the arts can be used for projectile
and barrel fabrication. Barrel and projectile structures can be of
proprietary plastics or engineered ceramics such as SiC. The
projectile's propulsion buses and current shunts--whose operation life
is measured in fractions of a millisecond--can be simple formed pieces
of sheet metal Aluminum or Copper or other conductor, mass restriction
permitting. As a safety measure the propulsion bus could be designed to
burst open or melt from heat build up after its anticipated barrel
cavity traverse time.
[0098] Voids and masses necessary to locate the projectile's center of
mass for in flight stability are not shown in the following figures.
[0099] The surfaces of elements of the invention with sliding
continuity with other elements thereof might be treated and/or machined
and/or formed to effect a smooth more effective sliding continuity;
e.g. a surface with boundary edges rounded and surface treated with low
friction conducting substances and/or textured to assure a correct
current path when elevated voltages are extant in the invention. The
projectile may have variation in its surface extruded in the direction
of its cavity traverse; e.g. corrugated surface with troughs parallel
the barrel cavity axis.
[0100] The barrel and its cavity may extend at the muzzle and/or breech
beyond the electromotive propulsion elements of the invention and in
said extensions the projectile may or may not be acted on by additional
motive, orientation, material modifying or other devices not part of
the invention; i.e. the invention may share a common barrel and barrel
cavity with other devices not part of the invention.
[0101] All electrical continuities between conducting elements in the
barrel and conducting elements in the projectile are sliding electrical
continuities with movement of the projectile in the barrel cavity.
[0102] The figures herein are not proportionally correct but are
presented to best illustrate the principles of the invention's
operation. For the projectile's thickness indicated in the figures, the
distance between the narrow walls of the cavity would be three, four or
more times the distance indicated in the figures. As indicated in
equation 3, the force acting on the projectile's propulsion buses due
to the forward and aft wall conductors is proportional to said wall
conductor's common length with the projectile's propulsion buses.
[0103] The wall conductor assembles in the first cavity walls of the
first and second cavity half and the wall conductor assembles in the
second cavity walls of the first and second cavity half can have a
common barrel bus. Each common barrel bus would have its midline (axis)
coincident the divide plane and have extending therefrom towards each
narrow cavity wall and the power rail thereat an array of wall
conductors for each cavity's half. This has the slight advantage of
reducing the gun's complexity, but permits cross over currents between
the cavity's half circuits.
[0104] Discussion of the Drawings
[0105] FIG. 1 is a view of a shortened assembled gun of the invention
and a projectile 32 for use therein. The gun's barrel has a first
section 11 and a second section 11a. Indicated in barrel section 11 is
an open channel w13 of the array of open channels in the barrel's first
half and an open channel x13 of the array of open channels in the
barrel section's second half in which mount the array of wall
conductors of the wall conductor assembles w16 and x16 in the first
cavity walls of the first and second cavity halves, respectfully. Also,
indicated are contact means w19 and x19 of the arrays of contact means
of the first wall conductor assembles w16 and w16, respectively,
mounted in their respective wall conductor's open channel w13 and x13.
[0106] Indicated is the breech cap 6 with extension 33a therein of
barrel cavity 33 with its first and second collateral half extension
parts w33a and x33a there through. The extension of the profile of the
surface 27 of midline power rail 26 in the material of breech cap 6 is
indicated as 27a and the profile of cavity guide 23 in the material of
breech cap 6 is indicated as 23a. The axis of guide 23 and its
extensions and the axis of the midline power rail 26 and its profile's
extensions are in the divide plane of the cavity. Also indicated are
the lug 31 which is common to both of the narrow wall power rails. The
narrow wall power rails are in, at or proximal the cavity's narrow end
walls. Power lug 28 of midline power rail 26 is also indicated. The
leads from an outside power supply connect to lug 31 and lug 28.
[0107] Also indicated is a projectile 32 for use in the collateral
barrel with its first collateral half w32, hereinafter the projectile's
first half, and its second collateral half x32, hereinafter the
projectile's second half. The projectile's first half w32 has end cap
w45 with guide w4 and the projectile's second half x32 has end cap x45
with guide x4. Indicated in the first surface of the projectile's first
half w32 are the first forward current shunt w34 and the first aft
current shunt w37. Indicated also are the first forward current shunt
x34 and first aft current shunt x37 in the first surface of the
projectile's second half x32. Guide way 46 at the junction of a
projectile's collateral halves is also indicated and with the
projectile in the barrel cavity, cavity guide 23 is in guide way 46 and
therein maintains proper orientation of said projectile during its
barrel cavity traverse.
[0108] FIG. 2 is the gun in FIG. 1 shortened and disassembled. Shown
are the array of wall conductors w18, the array of their contact means
w19 and the barrel bus w17 of the first wall conductor assembly w16 for
the first half of barrel section 11 and the arrays of wall conductors
x18, the array of their contact means x19 and the barrel bus x17 for
the first wall conductor assembly x16 for the second half of the first
barrel section 11. Wall conductor assembles w16 and x16 in the assembly
are in the arrays of open channels w13 and x13, respectively, in barrel
section 11. Indicated also is the barrel's breech cap 6 discussed
above.
[0109] Indicated are the narrow wall power rail w29 of the first cavity
half and its cavity surface w30 and the narrow power rail x29 of the
second cavity half and its cavity surface x30. Power rail surface w30
has guide way w3 throughout its length and power rail surface x30 has
guide way x3 throughout its length and the w4 and x4 guides,
respectively, of a projectile in the barrel cavity travel in said guide
ways and their extensions in the barrel. Indicated are the common power
bus w31 from the power lug 31 to the narrow wall power rail w29 and
common power bus x31 from said power lug to the narrow wall power rail
x29.
[0110] Narrow wall power rail w29 mounts in open channel w1 in rail
subassembly w25 with the extension of common bus w31 to said power rail
through open channel w25d in said subassembly. Rail subassembly w25 in
turn mounts in open channels w11d and w11da in barrel sections 11 and
11a, respectively, in the assembled gun. Narrow wall power rail x29
mounts in open channel x1 in rail subassembly x25 with the extension of
common bus x31 to said power rail through open channel x25d in said
subassembly. Rail subassembly x25 in turn mounts in open channels x11d
and x11da in barrel sections 11 and 11a, respectively, in the assembled
gun. Common power bus branch w31 mounts in channel w11c and common
power bus branch x31 mounts in channel x11c in barrel section 11.
[0111] Indicated are the midline power rail 26, its cavity surface 27
and power lug 28 to outside the barrel. Power rail 26 with lug 28
mounts in channel 11b in barrel section 11a. The second wall conductor
assembly for the first cavity's half w33 is w16a. Indicated are said
assembly's arrays of wall conductors w18a and contact means w19a and
its barrel bus w17a. The second wall conductor assembly for the second
cavity's half x33 is w16a. Indicated are said assembly's arrays of wall
conductors x18 and contact means x19a and its barrel bus x17a. Also
indicated in FIG. 2 is a projectile 32 discussed above with its breech
end indicated.
[0112] Indicated in barrel section 11a are the second cavity wall w20a
the cavity's first half w33 and the second cavity wall x20a of the
cavity's second half x33. In said second wall w20a is indicated one of
the arrays of openings w21a. A contact means w19a of the second wall
conductor assembly w16a of the cavity's first half extends through each
said openings into the topic half cavity. In said second wall x20a is
indicated one of the arrays of openings x21a. A contact means x19a of
the second wall conductor assembly w16a of the cavity's second half
extends through each said openings into the topic half cavity.
[0113] There are a like array of openings, w21 in the first wall w20 of
first cavity's half w33 and x21 in the first wall x21 of the second
cavity's half x33, respectively. Contact means w19 of the first wall
conductor assembly of the cavity's first half extend into the cavity
through mating openings w21 in the first wall of the first cavity's
half and contact means x19 of the first wall conductor assembly of the
second cavity's half extend into the cavity through mating openings x21
in the first wall of the second cavity's half.
[0114] FIG. 3 is a cut-a-way view of the gun near its breech to
illustrate the arrangement of the various parts of an assembled gun
with a projectile 32 in the gun's cavity 33. The first barrel section
11 with its first wall w20 of the cavity's first half w33 and the array
of openings w21 in said wall for the contact means w19 of the wall
conductors w18 of the first wall conductor assembly w16 of the cavity's
first half w33 along with the barrel bus w17 of said assembly are
indicated.
[0115] Also indicated are the first wall x20 of the cavity's second
half x33 and the array of openings x21 in said wall for the contact
means x19 of the wall conductors x18 of the first wall conductor
assembly w16 of the cavity's second half x33 along with barrel bus x17
of said assembly. Indicated also in barrel section 11 are a open
channel w13 in which is mounted a wall conductor w18 with its contact
means w19 of the first wall conductor assembly w16 of the cavity's
first half w33 and a open channel x13 in which is mounted a wall
conductor x18 with its contact means x19 of the first wall conductor
assembly x16 of the cavity's second half x33.
[0116] Also indicated in the cavity wall of barrel section 11 is guide
23 at the divide plane of the cavity which is in guide way 46 of
projectile 32. Indicated also in barrel section 11 are open channels
w11d and x11d which with open channels w11da and x11da of barrel
section 11 a retain rail subassembly w25 with narrow wall power rail
w29 of the cavity's first half w33 and rail subassembly x25 with narrow
wall power rail x29 of the cavity's second half x33, respectively.
[0117] The second side of the projectile's first half w32 with the
second forward current shunt w34a and the second aft current shunt w37a
in the cavity's first half w33 and the second side of projectile's
second half x32 with second forward current shunt x34a and second aft
current shunt x37a in the cavity's second half x33 is indicated.
[0118] Indicated also in figure three, along with the leading edge 43
of the projectile 32 in the barrel cavity 33, is the midline power rail
26 which travels in guide way 46a of a projectile in the barrel cavity
and wherein it has continuous electrical continuity with the propulsion
bus in both halves of the projectile. Barrel section 11a is indicated
with open channels w13a and x13a for wall conductors w18a and w18a,
respectively, and their respective contact means w19a and w19a, of the
second wall conductor assembles w16a and x16a of the first and second
half cavities, respectively. Indicated also are breech cap 6 and
connection lug 28 of power rail 26 to outside the barrel.
[0119] FIG. 4 is framed section A in FIG. 3, enlarged. Shown is a
contact means w19a of the second wall conductor assembly w16a of the
cavity's first half w33 in its respective barrel's open channel w13a.
Each contact means w19a has threaded end w19ae in its respective
threaded channel w21a opening to the first cavity's half w33 through
said cavity half's second wall w20a. Contact means w19a is adjusted in
said opening using hex head w19aa at the end of shank w19ab and locked
in place with lock nut w19ad. Conducting yoke w19ac mounted on the
contact means shank w19ab and the tang w18ab of wall conductor w18a
provides continuous electrical continuity between said wall conductor
and said contact means.
[0120] FIG. 5 is framed section B in FIG. 3, enlarged. Shown are a wall
conductor w18a at its end distal its contact means w19a where it has
continuous electrical continuity with the barrel bus w17a of the second
wall conductor assembly of the first cavity's half w33. The end of said
wall conductor w18a has structure w18ac which is formed to snap over
the barrel bus w17a and maintain continuous electrical continuity
therewith.
[0121] FIG. 6 is an oblique view of the first side of a collateral
projectile 32 for use in collateral barrel cavity 33. Indicated are
said projectile's first half w32 and the first forward current shunt
w34 therein and said shunt's surface w35 that in the barrel cavity has
electrical continuity with the contact means w19 of the first wall
conductor assembly w16 of the cavity's first half w33 and surface w36
of said shunt which in the barrel cavity has continuous electrical
continuity with the cavity surface w30 of the narrow wall power rail
w29 of said cavity's half. Each wall conductor w18 whose contact means
w19 at any instant has electrical continuity with the forward current
shunt's surface w35 is one of the group of one or more wall conductors
with said electrical continuity at any instant comprising the first
forward wall conductors of the cavity's first half.
[0122] Also in the first surface of the projectile's first half w32 is
first aft current shunt w37 and its surface w38 which when in the
barrel cavity also has electrical continuity with contact means w19 of
the first wall conductor assembly w16 in the cavity's first half w33.
Each wall conductors w18 whose contact means w19 has electrical
continuity at any instant with surface w38 of the first aft current
shunt w37 is one of the group of one or more wall conductors with said
electrical continuity comprising the first aft wall conductors of the
cavity's first half at any instant. Indicated are end cap w53 which in
the cavity's first half w33 is proximal the narrow wall power rail w29
and guide w4 of end cap w53 is in the guide way w3 of narrow wall power
rail w29.
[0123] Indicated are said projectile's second half x32 and the first
forward current shunt x34 therein and said shunt's surface x35 that in
the barrel cavity has electrical continuity with the contact means x19
of the first wall conductor assembly x16 of the cavity's second half
x33 and said shunt's surface x36 which in the barrel cavity has
continuous electrical continuity with the cavity surface x30 of the
narrow wall power rail x29 for said cavity's half. Each conductors x18
whose contact means x19 at any instant has electrical continuity with
said forward current shunt's surface x35 is one of the group of one or
more wall conductors having said electrical continuity at any instant
comprising the first forward wall conductors of the cavity's second
half.
[0124] Also in the first surface of the projectile's second half x32 is
first aft current shunt x37 and its surface x38 which when in the
barrel cavity has electrical continuity with contact means x19 of the
first wall conductor assembly x16 in the cavity's second half x33. Each
wall conductor x18 whose contact means x19 has electrical continuity at
any instant with surface x38 of the first aft current shunt x37 is one
of the group of one or more wall conductors with said electrical
continuity comprising the first aft wall conductors of the cavity's
second half at any instant.
[0125] Indicated are end cap x53 which in the cavity's first half x33
is proximal the narrow wall power rail x29 therein and end cap guide x4
is in guide way x3 in said power rail. Also indicted in FIG. 6 is the
breech proximal edge 44 of the projectile when in the barrel cavity and
guide way 46 whose axis is coincident the projectile's divide plane.
With the projectile 32 in the barrel cavity 33, guide 23 located in the
cavity's first broad wall with its axis coincident with the divide
plane of the barrel cavity is in guide way 46 in the projectile's first
side at the junction of the projectile's first and second halves; i.e.
w32 and x32, respectively.
[0126] FIG. 7 is an oblique view of the second side of collateral
projectile 32. In addition to the elements discussed in FIG. 6 are
indicated the second side of the first projectile's half w32 and the
second forward current shunt w34a therein and said shunt's surface w35a
that in the barrel cavity has electrical continuity with the contact
means w19a of the second wall conductor assembly w16a of the cavity's
first half w33.
[0127] Each wall conductor w18a whose contact means w19a at any instant
has electrical continuity with the forward current shunt's surface w35a
is one of the group of one or more wall conductors at any instant
comprising the second forward wall conductors of the cavity's first
half.
[0128] Also in the second surface of the projectile's first half w32 is
second aft current shunt w37a and its surface w38a which when in the
barrel cavity has electrical continuity with contact means w19a of the
second wall conductor assembly w16a in the first half cavity w33. Each
wall conductors w18a whose contact means w19a has electrical continuity
at any instant with surface w38a of the second aft current shunt w37a
is one of the group of one or more wall conductors comprising second
aft wall conductors of the cavity's first half at any instant.
[0129] Indicated are said projectile's second half x32 and the second
forward current shunt x34a therein and said shunt's surface x35a that
in the barrel cavity has electrical continuity with the contact means
x19a of the second wall conductor assembly x16a of the cavity's second
half x33. Each wall conductor x18a whose contact means x19a at any
instant has electrical continuity with said forward current shunt's
surface x35a is one of the group of one or more wall conductors at any
instant comprising the second forward wall conductors of the cavity's
second half.
[0130] Also in the second surface of the second projectile's half x32
is second aft current shunt x37a and its surface x38a which when in the
barrel cavity has electrical continuity with contact means x19a the
second wall conductor assembly x16a in the cavity's second half x33.
Each wall conductor x18a whose contact means x19a has electrical
continuity at any instant with surface x38a of the second aft current
shunt x37a is one of the group of one or more wall conductors
comprising the second aft wall conductors of the cavity's second half.
[0131] The midline power rail 26 with a projectile in the barrel cavity
is in the projectile's guide way 45. Guide way 45 is coincident with
the divide plane of the projectile. The midline power rail 26 in guide
way 45 has continuous electrical continuity therein with the propulsion
bus in each half of the projectile. Said continuities are at the
assembly clearance port 32h in the second side of the collateral
projectile at the junction of said propulsion buses.
[0132] FIG. 8 is a collateral projectile 32 for collateral cavity 33,
disassembled. Indicated are propulsion bus x41 of the projectile's
second half x32 which mounts in channel x54 in said projectile's half
and extend therein through opening 32h in the second side of said
projectile. When mounted, said propulsion bus's propulsion bus-aft
shunt current bus x81 is in channel x82 and aft current shunt x37a with
its surface x38a is in open channel x52a in the second side of the
projectile's second half x32.
[0133] In like manner propulsion bus w41 of the projectile's first half
w32 mounts in a channel w54 in said projectile's half and channel w54
intersects and aligns with said channel x54. The propulsion bus-aft
shunt current bus w81 is in a mating channel w82 in the projectile's
half and second aft current shunt w37a with its surface w38a mounts in
open channel w52a in the second side of the projectile's first half.
[0134] In the topic design, propulsion bus w41 and propulsion bus x41
meet and are fastened together by pin 42p through hole w42h in
propulsion bus w41 and hole x42h in propulsion bus x41 in open channel
32h at the midpoint of guide way 46a and their respective surfaces w42
and x42 therein have, when in the barrel cavity, continuous electrical
continuity with the cavity surface 27 of midline power rail 26. With
the propulsion bus halves mounted, insulating lamina w75 and x75 for
the projectile's first and second halves, respectively, cover and
electrically insulate the propulsion bus-aft shunt current buses for
said halves.
[0135] The first aft current shunt w37 mounts in open channel w52 on
the first side of the projectile's first half, second forward current
shunt w34a mounts in open channel w50a in the second side of said
projectile's half and the current bus w71 between and connecting said
shunts mounts on top of said insulating lamina w75 in channel w70 of
end cap w53 in the assembled projectile's first half w32.
[0136] In like manner, the first aft current shunt x37 with surface x38
mounts in open channel x52 on the first side of the projectile's second
half, second forward current shunt x34a with surface x35a mounts in
open channel x50a the second side of said projectile's half and the
current bus x71, between and connecting said shunts, mounts on top of
said lamina x75 in channel x70 of end cap x53 in the assembled
projectile's second half x32.
[0137] Also, in the projectile's first half w32, the first forward
current shunt w34 with surfaces w35 and w36 mounts in open channel w50
and said channel's extension w50b in the end cap of said projectile's
half and in the projectile's second half x32, the first forward current
shunt x34 with surfaces x35 and x36 mounts in open channel x50 and its
extension x50b the end cap of said projectile's half.
[0138] FIGS. 9 and 10 are the first and second side, respectively, of
the cavity's first half with a projectile's first half therein to
demonstrate the current path in one half of the gun. The current path
in the gun cavity's second half and projectile's second half therein
mimics the path in the first. In the topic figures, the major points
along the current path are indicated by the letters: `a`, `b`, `c`,`d`,
`e`, `f`, `g`, `h`, `i`, `y`, `k`, `m`, `n`, `o`, `p`, `q`, `r`, `s`,
`t`, `u` and `v` Looking to FIG. 9, the narrow wall power rail w29 is
first taken as positive with reference the midline power rail 26; i.e.
the current lug 31 is connected to the positive terminal of an outside
power supply and current lug 28 is connected to the return terminal of
said power supply. Current is from input lug 31 (`a` in the figure)
through current bus branch w31 and therefrom to said power rail w29
(see also FIG. 2).
[0139] The current in power rail w29 has muzzle direction to `b` in
FIG. 9 whereat it has continuous electrical continuity with the first
forward current shunt w34 of the first cavity half via the continuous
electrical continuity of said shunt's surface w36 with barrel cavity
surface w30 of power rail w29. The magnetic fields of the current in
barrel power rail w29 interact with the current in the projectile's
propulsion bus w41 creating forces therein with muzzle directed, cavity
axis parallel components.
[0140] The magnetic fields of current in power rail w29 at radii beyond
the midline power rail 26 interact with the current in the propulsion
bus x41 in the projectile's second half creating forces therein with
breech directed, cavity axis parallel components. In like manner, the
magnetic fields of the current in the narrow wall power rail x29 in the
cavity's second half interact with the current in propulsion bus w41 of
the projectile's first half also creating forces therein with breech
directed, cavity axis parallel components. Said breech directed force
components in the propulsion bus w41 due to the magnetic fields of the
current in the narrow wall power rail x29 of the cavity's second half
are smaller then the muzzle directed force components due to the
magnetic fields of the current in the narrow wall power rail w29.
[0141] The current continues from power rail w29 via the first forward
current shunt surface w36, `c` in the figure, and surface w35, `d` in
the figure, to the group of one or more wall conductors w18 comprising
the first forward wall conductors of said cavity's first half [i.e. the
forward wall conductors of the first wall conductor assembly w16 of
said cavity's half] which have electrical continuity, via their contact
means w19, with said forward current shunt surface w35 at any instant.
[0142] The current in the forward wall conductors of said first wall
conductor assembly w16 is barrel bus directed from `e` to `f` in FIG.
9; i.e. the current's direction is toward the cavity's divide plane.
The magnetic fields of the currents in the first forward wall
conductors w18 in the cavity's first half w33 interact with the current
in propulsion bus w41 of the projectile's first half w32 creating
forces therein with cavity axis parallel, muzzle directed components.
[0143] The current continues from the first forward wall conductors to
the barrel bus w17 of the first wall conductor assembly w16 of the
cavity's first half and therein has breech direction; i.e. the
current's direction is from `f` to `g` in the FIG. 9. The magnetic
fields of the current in barrel bus w17 interacts with the current in
the propulsion bus w41 of the projectile's first half creating forces
therein with cavity axis, muzzle directed components.
[0144] The magnetic fields of the current in barrel bus w17 also
interacts with the current in the propulsion bus x41 of the
projectile's second half x32 also creating therein forces with cavity
axis parallel, muzzle directed components.
[0145] In like manner the magnetic fields of currents in the barrel
buses x17 and x17a of the first and second wall conductor assembles,
respectively, in the cavity's second half interact with the current in
the propulsion bus w41 of the projectile's first half creating
additional forces in said propulsion bus with cavity axis parallel
muzzle directed components.
[0146] Current continues from barrel bus w17 to the first aft wall
conductors of the cavity's first half; i.e. current continues from g to
h in FIG. 9. Said aft wall conductors are the group of one or more wall
conductors w18 which have via their contact means w19, at any instant,
electrical continuity with the surface w38 (`i` in the figure) of the
first aft current shunt w37 of the projectile's first half w32. The
magnetic fields of currents in said first aft wall conductors interact
with the current in propulsion bus w41 creating in said propulsion bus
forces with cavity axis parallel, muzzle directed components.
[0147] The current continues from surface w38 of the first aft current
shunt w37 to surface w35a of the second forward current shunt w34a via
the projectile's aft shunt-forward shunt current bus w71; i.e. the
current continues from `i` to `j` to `k` to `l` in the figures.
[0148] The current continues in the second forward wall conductors of
the cavity's first half [i.e. the forward wall conductors of the second
wall conductor assembly w16a in the cavity's first half] towards said
assembly's barrel bus; i.e. current continues from `m` to `n` in FIG.
10. Said second forward wall conductors are the group of one or more
wall conductors w18a of the second wall conductor assembly w16a, which
have at any instant via their contact means w19a, electrical continuity
with surface w35a the second forward current shunt w34a. The magnetic
fields of the currents in the second forward wall conductors of the
cavity's first half interact with the current in the propulsion bus w41
in the projectile's first half creating forces in said propulsion bus
with cavity axis parallel, muzzle directed components.
[0149] The current continues from the second forward wall conductors of
the cavity's first half w33 to the second wall conductor assembly's
barrel bus w17a wherein it has breech direction; current continues from
`n` to `o` in FIG. 10. The magnetic fields of the current in barrel bus
w17a interact with the current in the propulsion bus w41 of the
projectile's first half w35 creating forces in said propulsion bus with
cavity axis parallel, muzzle directed components. Said magnetic fields
also interact with the current in the propulsion bus x41 of the
projectile's second half x32 also creating forces in propulsion bus x41
with cavity axis parallel, muzzle directed components.
[0150] The current continues from the second wall conductor assembly's
barrel bus w17a to the second aft wall conductors of the cavity's first
half [i.e. aft wall conductors w18a of the second wall conductor
assembly w16a] and therein towards said cavity half's narrow wall of;
i.e. current continues from `o` to `p` to `q` in FIG. 10. The second
aft wall conductors of the cavity's first half [i.e. aft wall
conductors of the second wall conductor assembly in the cavity's first
half w33] are comprised of the group of one or more wall conductors
w18a of the second wall conductor assembly w16a which have at any
instant, via their contact means w19a, electrical continuity with
surface w38a of the second aft current shunt w37a. magnetic fields of
the currents in the second aft wall conductors of the cavity's first
half w33 interact with the current in the propulsion bus w41 of the
projectile's first half creating in said bus forces with cavity axis
parallel, muzzle directed components.
[0151] Current continues from the second aft current shunt w37a to the
propulsion bus w41 of the projectile's first half w32 via the
propulsion bus-aft shunt current bus w81; current continues from `q`,
at aft shunt surface w38a, `r`, at the propulsion bus-aft shunt current
bus w81, to `s` at the junction of said current bus with the propulsion
bus w41 in FIG. 10. The current continues in propulsion bus w41 from
proximal the narrow wall power rail w29 toward the midline power rail
26 whose cavity surface 27 has continuous electrical continuity with
said propulsion bus's surface w42 at said midline power rail; i.e.
current continues from `s` to `t` in FIG. 10.
[0152] The current continues from propulsion bus w41 to the midline
power rail 27 and therein has breech direction to said rail's lug 28 to
outside the barrel; i.e. current continues from `u` to `v` at the
rail's lug 28 outside the barrel. The magnetic fields of the current in
the midline power rail 26 interact with the current in propulsion bus
w41 creating forces in said propulsion bus with cavity axis parallel,
muzzle directed components. Lug 28 is connected to the return terminal
of the outside power supply. The magnetic fields of the current in the
midline power rail also interacts with propulsion bus x41 of the
projectile's second half creating in propulsion bus x41 forces with
cavity axis parallel, muzzle directed components.
[0153] The current in propulsion bus w41 is acted on by the magnetic
fields of the currents in the forward and aft wall conductors of the
first and second wall conductor assembles of the cavity's first half,
the magnetic fields of the currents in the barrel buses of the first
and second wall conductor assembles of the first and second cavity
halves, the magnetic fields of the currents in the midline power rail
and the magnetic fields of the current in the narrow wall power rail in
the cavity's first half, creating forces in the propulsion bus with
cavity axis parallel, muzzle directed components. The magnetic field of
the narrow wall power rail in the cavity's second half interacts with
the current in propulsion bus w41 creating a much smaller projectile
acceleration retarding force in said propulsion bus with breech
directed, cavity axis parallel components.
[0154] With power lug 28 of the midline power rail 26 connected to the
positive terminal of an outside power supply and the power lug 31 of
barrel bus distal power rails w29 and x29 connected to the return
terminal of the outside power supply, the current in the midline power
rail 26 is muzzle directed and its magnetic fields interact with the
current in the propulsion bus w41 of the projectile's first half
creating forces in said propulsion bus with cavity axis parallel,
muzzle directed components; i.e. the currents direction in FIG. 10
current is from `v` to `u`.
[0155] The current continues from the midline power rail 26 to the
propulsion bus w41 of the projectile's first half via the continuous
electrical continuity of said rail's surface 27 with surface w42 of
said propulsion bus. The current continues in propulsion bus w41
towards the narrow wall of the cavity's first half; i.e. the current is
from `t` to `s` in FIG. 10. The current in propulsion bus w41 is acted
on by the magnetic fields of the current in its surrounding circuit
elements noted above.
[0156] The current continues from the propulsion bus w41 through the
propulsion bus-aft shunt current bus w81 towards the breech to second
aft current shunt w38a; i.e. the current is from `s` to `r` to `q` in
said figure.
[0157] The current continues from the second aft current shunt w37a to
the second aft wall conductors of the first cavity's half and therein
continues towards the barrel bus w17a of the second wall conductor
assembly w16a of said cavity's half; i.e. the current continues from
`q` to `p` to `o` in FIG. 10. The magnetic fields of the currents in
said second aft wall conductors interact with the current in the
propulsion bus w41 creating forces therein with cavity axis parallel,
muzzle directed components.
[0158] The current continues from the second aft wall conductors of
said cavity's half [i.e. the aft wall conductors w18a of the second
wall conductor assembly w16a] to the barrel bus w17a of the second wall
conductor assembly w16a and in said barrel bus has muzzle direction;
i.e. the current continues from `o` to `n` in said barrel bus. The
magnetic fields of the current in said barrel bus interacts with the
currents in the propulsion buses of the first and second halves of the
projectile, w41 and x41 respectively, creating therein forces with
cavity axis parallel, muzzle directed components.
[0159] The current continues from the barrel bus of the second wall
conductor assembly of the cavity's first half to the second forward
wall conductors of the cavity's first half and therein is directed
towards the narrow wall of said cavity's half; i.e. the current
continues from `n` to `m` in FIG. 10. The magnetic fields of the
currents in said second forward wall conductors interacts with the
current in the propulsion bus w41 creating therein forces with cavity
axis parallel, muzzle directed components.
[0160] The current continues from the second forward wall conductors of
said cavity's first half to the second forward current shunt w34a of
the projectile's first half w32 therein and then through the aft
shunt-forward shunt current bus w71 of said projectile's half to the
first aft current shunt w37 of said projectile's half; i.e. the current
continues from `m` to `l` to `k` to `j` in FIG. 10 and on to `i` in
FIG. 9.
[0161] The current continues in the first aft wall conductors of the
cavity's first half [i.e. the aft wall conductors of the first wall
conductor assembly w16] towards their assembly's barrel bus; i.e. the
current continues from `i` to `h` to `g` in FIG. 9. The magnetic fields
of the currents in said fist aft wall conductors interact with the
current in the propulsion bus w41 creating forces in said propulsion
bus with cavity axis parallel, muzzle directed components.
[0162] The current continues from said first aft wall conductors to the
barrel bus w17 of the first wall conductor assembly w16 and therein has
muzzle direction; i.e. the current continues from `g` to `f` in FIG. 9.
The magnetic fields of the current in said barrel bus interacts with
the currents in the propulsion buses in the projectile's first and
second halves creating in said buses forces with cavity axis parallel,
muzzle directed components.
[0163] The current continues from said barrel bus to the first forward
wall conductors of the cavity's first half and continues therein
towards the narrow wall power rail w29 of said cavity's half; i.e. the
current continues from `f` to `e` in FIG. 9. The magnetic fields of the
currents in said first forward wall conductors interact with the
current in the propulsion bus of the first projectile's half creating
in said propulsion bus forces with cavity axis parallel, muzzle
directed components.
[0164] The current continues from said fist forward wall conductors
through the first forward current shunt of the projectile's first half
to the narrow wall power rail w29 in the cavity's first half; i.e. the
current continues from `e` to `d` to `c` to `b` in FIG. 9. The current
continues in power rail w29 towards the breech and therefrom via lug 31
to the return terminal of the outside power supply; i.e. the current
continues from `b` to `a` in FIG. 9. The magnetic fields of the current
in power rail w29 interact with the current in the propulsion bus w41
creating forces in said propulsion bus with cavity axis parallel,
muzzle directed components and said magnetic fields also interact with
the current in propulsion bus x41 of the projectile's second half
creating forces therein with cavity axis parallel, breech directed
components.
[0165] Generally, regardless the polarity of the current lugs 28 and 31
relative to each other, the direction of current in the first and
second forward wall conductors of a cavity's half [i.e. the forward
wall conductors of the first and second wall conductor assembles in
each cavity half] is the same as the current in the propulsion bus in
the respective projectile's half. The direction of current in the first
and second aft wall conductors of a cavity's half [i.e. the aft wall
conductors of the first and second wall conductor assembles in each
cavity half] is opposite the current direction in propulsion bus in the
projectile's respective half. The current direction in the barrel buses
of the first and second wall conductor assembles of the first and
second cavity halves is the same as in the midline power rail. The
current direction in the narrow wall power rails in each cavity's half
cavities are the same and the same as the current direction in the
proximal current buses in the projectile and opposite the current
direction in the midline power rail and the barrel buses of the first
and second wall conductor assembles of the first and second half
cavities.
[0166] FIG. 11 illustrates a means for retaining a projectile in the
barrel's breach prior to use. In the device, a fuse pin is used to
retain the projectile at the breach end of the barrel cavity until
sufficient current is supplied to the power rail lugs to vaporize the
fuse pin and release the projectile for acceleration in the barrel
cavity toward the muzzle. This arrangement is particularly suitable for
one shot disposable cartridge type guns.
[0167] In FIG. 11, fuse pin 65 is in clearance hole 58 in breech end
cap 6 and in said hole, fuse pin 65 is fastened at hole 28h in
extension 28e of power lug 28 of midline power rail 27 with good
electrical continuity. The fuse pin passes from hole 28h through
clearance channel 161 in cleat 160 at the breech end of projectile 32
to hole 31h in extension 31e of power lug 31 in breach cap 6 where said
fuse pin is also fastened with good electrical continuity.
[0168] Although the invention has been described herein with reference
to the presently preferred embodiments, a great number of
modifications, changes and alterations including alternative
configurations of said embodiments are possible without departing from
the spirit and scope of the invention as defined in the appended claims
and equivalents thereof.
* * * * *
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