Pre-molded AFT seal for discarding sabot projectiles
AssigneePrimex Technologies, Inc.
InventorsWilliam B. Stewart, Donald R. Osment, John W. Duchek
Life of this patent
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Abstract
The present invention is directed to a pre-molded aft seal for an armor piercing fin stabilized discarding sabot (APFSDS) projectile, comprising a plastic sleeve made from a material selected from the group consisting of thermoplastic polyurethane and thermoplastic polyester elastomer, and effective to seal an APFSDS projectile from combustion products, the plastic aft sleeve further comprising an outwardly flanged first portion having a radius of curvature of from about 0.1 to 5 inches; a constantly decreasing diameter second portion; and an inwardly flanged substantially conical third portion connected to the second portion by a curved portion having a radius of curvature of from about 0 to 0.25 inch.
Claims14
A pre-molded aft seal for an armor piercing fin stabilized discarding sabot (APFSDS) projectile, comprising:
- a plastic sleeve made from a material selected from the group consisting of thermoplastic polyurethane and thermoplastic polyester elastomer, and effective to seal an APFSDS projectile from combustion products, said plastic aft sleeve further comprising
- an outwardly flanged first portion having a radius of curvature of from about 0.1 to 5 inches;
- a constantly decreasing diameter second portion;
- and
- an inwardly flanged substantially conical third portion connected to said second portion by a connecting portion having a radius of curvature of from about 0 to 0.25 inch.
An armor piercing fin stabilized discarding sabot projectile, comprising:
- a projectile assembly comprising a penetrator surrounded by a sabot;
- a pre-molded plastic aft seal disposed around a portion of said sabot and made from a material selected from the group consisting of thermoplastic polyurethane and thermoplastic polyester elastomer and effective to seal said projectile assembly from combustion products, said pre-molded plastic aft seal further comprising
- an outwardly flanged first portion having a radius of curvature of from about 0.1 inch to 5 inches;
- a constantly decreasing diameter second portion;
- and
- an inwardly flanged substantially conical third portion connected to said second portion by a connecting portion having a radius of curvature of from about 0 to 0.25 inch.
Dependencies are inferred from the claim text.