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A cartridge case 76 for a cased telescoped ammunition round 10. Cartridge case 76 includes a hollow cylindrical outer casing 12 the axis 18 of which is also the axis of symmetry of round 10. The inner surface of outer casing 12 has a longitudinal groove 50 formed in it along which groove 48 outer ca

A cartridge case 76 for a cased telescoped ammunition round 10. Cartridge case 76 includes a hollow cylindrical outer casing 12 the axis 18 of which is also the axis of symmetry of round 10. The inner surface of outer casing 12 has a longitudinal groove 50 formed in it along which groove 48 outer casing 12 splits when round 10 is fired. A front seal 20 closes the front end of casing 12 and a rear seal 22 closes the rear end of casing 12. A hollow cylindrical control tube 24 is secured to rear seal 22 so that control tube 24 is symmetric with axis 18. Three bolts 52, 53, 54 which are made of a material having a yield strength greater than the maximum stress to which the bolts 52, 53, 54 are subjected when round 10 is fired interconnect front and rear seals 20, 22. After round 10 is fired, bolts 52, 53, 54 return to their initial length, so that the length of the cartridge case returns to its initial length, and seals 20, 22 confine the casing 12 between seals 20, 22 to maintain the integrity of the spent cartridge case 76.

대표청구항 ▼

A cased telescoped ammunition round comprising: a hollow cylindrical outer casing made of a material which undergoes nonelastic deformation when the round is fired and having a front portion, a rear portion, an axis of symmetry, and a stress concentrating groove; a front seal within which front port

A cased telescoped ammunition round comprising: a hollow cylindrical outer casing made of a material which undergoes nonelastic deformation when the round is fired and having a front portion, a rear portion, an axis of symmetry, and a stress concentrating groove; a front seal within which front portion of outer casing is positioned; a rear seal within which the rear portion of the outer casing is positioned; a hollow cylindrical control tube having a front end and a rear end, the rear end of the control tube being secured to the rear seal so that the control tube is substantially symmetrical with respect to the axis; a plurality of metal rods interconnecting the front and rear seals, said rods being made of a material which undergoes elastic deformation when the round is fired; a projectile having a base; a booster piston mounted on the base of the projectile, the projectile being positioned within the outer casing with the piston being positioned within the control tube; a main propellant charge positioned around the control tube, around the projectile, within the outer casing, and between the front and rear seals; a booster propellant positioned within control tube; and primer means mounted in the control tube for igniting the booster propellant charge when initiated. A cartridge case for a cased telescoped ammunition round comprising: a hollow cylindrical outer casing made from a material having a yield strength less than the maximum stress to which the casing is subjected and having a front portion, a rear portion, an axis of symmetry, and a stress concentrating groove substantially parallel to the axis of symmetry; a front seal within which the front portion of the casing is positioned; a rear seal within which the rear portion of casing is positioned; a hollow cylindrical control tube having a front end and a rear end, the rear end of control tube being secured to the rear seal so that the control tube is substantially symmetrical with respect to the axis, and the front end of the control tube is spaced from the front seal; a plurality of bolts interconnecting the front and rear seals said bolts being made of a material having a yield strength greater that the maximum stress to which said bolts are subjected; and a primer 32 mounted in the rear end of control tube 24.