Ammunition round and method of manufacture thereof

Details Ammunition round and method of manufacture thereof Ammunition round and method of manufacture thereof

1987-01-15

1989-02-14

Tudor, Harold J.

Ammunition and explosives

Cartridges

Telescoping powder charge

102430, 102462, 102464, 102467, 102469, F42B 502

Patent

active

048039276

ABSTRACT:
An improved telescoped ammunition round having a projectile comprising an aft recess to receive a booster tube that is affixed to the cartridge case and which remains stationary relative to the cartridge case throughout the firing sequence. The booster tube is provided with a primer to ignite the booster charge and is positioned within the projectile recess to initially propel the projectile and subsequently ignite the main propellant within the cartridge case after the projectile has been forced at least partially into the gun barrel.
An improved method of manufacturing such an ammunition round utilizes an aluminum alloy seamless tube as a cartridge case and at least one case end seal. The seal is configured to have a unique angled slot and the case end is conically shaped by a mandrel to be press fit into the seal slot. Once mated in this fashion, the cartridge case and seal are firmly secured to each other. The main propellant and the projectile may be placed within the cartridge case before at least one end of the cartridge case is bent on the mandrel and thus while the case end is straight.

REFERENCES:
patent: 331511 (1885-12-01), Lorenz
patent: 3099958 (1963-08-01), Daubenspeck et al.
patent: 4192233 (1980-03-01), Dumortier
patent: 4197801 (1980-04-01), La Fever et al.
patent: 4335657 (1982-06-01), Bains
patent: 4604954 (1986-08-01), Clarke et al.

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