Tracer and composition
AssigneeFord Aerospace & Communications Corporation
InventorJawaharlal Ramnarace
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Abstract
Improved tracer rounds and compositions therefor comprising a rubbery, particulate mixture having magnesium, polytetrafluoroethylene and advantageously other ingredients coated with copolymer of hexafluoropropylene and vinylidenefluoride, optionally containing ingredients such as carbon black, and providing advantages in preparation (e.g., lower consolidation pressures) and use (e.g., more uniform burning after ignition).
Claims7
An improved tracer round comprising a projectile with a cavity containing tracer compositions wherein the tracer composition comprises a consolidated rubbery particulate tracer mixture which comprises:
- (A) about 30-60 parts by weight magnesium;
- (B) about 10-40 parts by weight polytetrafluoroethylene;
- and
- (C) about 10-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride,
- wherein a coating on (A) and (B) comprises the copolymer of (C).
A rubbery particulate tracer mixture, which comprises:
- (A) about 40-50 parts by weight magnesium;
- (B) about 10-30 parts by weight polytetrafluoroethylene;
- (C) about 5-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride;
- (D) about 10-25 parts by weight metal nitrate oxidizer;
- and
- (E) about 1-10 parts by weight carbon black,
- wherein a coating for (A), (B) and (D) comprises the copolymer of (C).
Dependencies are inferred from the claim text.