Barrel assembly and projectile for use with the same
A barrel assembly for a weapon, said barrel assembly including a barrel; a plurality of projectile assemblies axially disposed in end to end abutting relationship within said barrel for operative sealing engagement with the bore of the barrel, each projectile including a projectile head and an integral cylindrical spacer portion extending axially and rearwardly from said projectile head; discrete propellant charges accommodated within said cylindrical spacer portion for propelling respective projectile assemblies sequentially through the muzzle of the barrel; ignition means for igniting said discrete propellant charges; and control means for selectively and sequentially actuating the ignition means. In one form, each projectile assembly further includes an internal wedging surface, at or adjacent the trailing end of said cylindrical extension which accommodates a tapered nose part of a following projectile, for expanding said trailing end into enhanced sealing engagement with the barrel upon engagement of said wedging surface With said tapered nose part.
1. A projectile for a barrel, comprising
a nose;
an expandable tail, wherein when the projectile is stacked nose to tail in a barrel with other projectiles and force is exerted down the barrel, the tail contacts the nose of a trailing projectile and part of the tail of the projectile is thereby expanded into contact with the bore of the barrel; and
a propellant charge within the tail for propelling the projectile, the propellant charge being ignitable by a means for electrically igniting disposed at a leading end of the propellant charge.
2. A projectile according to claim 1 wherein the tail comprises an end portion having a concave shape which is complementary to the shape of the nose.
3. A projectile according to claim 1 , wherein the tail includes a cylindrical extension rearwards from the nose and a rearmost part of the extension is expanded radially into contact with the bore of the barrel.
4. A projectile according to claim 3 , wherein the cylindrical extension is structurally reinforced to limit the radial expansion.
5. A projectile according to claim 1 , wherein the tail comprises a cylindrical extension which is integral with the nose.
6. A projectile according to claim 1 , wherein the tail comprises a cylindrical extension which fits closely within the bore of the barrel.
7. A projectile according to claim 1 , further comprising a spacer which limits compression of the projectiles in the barrel.
8. A projectile according to claim 7 , wherein the spacer is a spine extending rearwards from the nose.
9. A projectile according to claim 1 , wherein the projectile has a dart-like configuration.
10. A projectile according to claim 1 , wherein the tail of the projectile is expanded into sealing contact with the bore of the barrel when force is exerted on the projectile due to firing of a leading projectile.
11. A projectile according to claim 1 , wherein each projectile includes reinforcement which limits expansion of the tail.
12. A projectile according to claim 1 , wherein each projectile includes a stop which limits expansion of the tail.
13. A projectile according to claim 1 , further comprising a printed circuit laminate for providing an electrical ignition pulse to the means for electrically igniting.
14. A projectile according to claim 1 , wherein the tail of the projectile is expanded into contact with the bore of the barrel when force is exerted on the projectile during loading.
15. A projectile according to claim 14 , wherein the tail of the projectile is expanded into increased contact with the bore of the barrel when force is exerted on the projectile due to firing of a leading projectile.