Ammunition cartridge with induced instability at a pre-set range
US9952024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B10/48
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A training ammunition cartridge comprises a projectile and a cartridge case with a pyrotechnic propellant. The projectile has a projectile body with at least one compartment therein forming a void and containing a material that transitions from a solid to a liquid after set-back and after exiting from a barrel of a gun. The void is of such configuration as to cause the liquid material therein to induce forces and moments that, after a period of stable ballistic flight, destabilize the projectile and shorten its flight. Alternatively, the projectile void contains a solid mass that is released to shift its position after set-back and after the projectile exits from the barrel of the gun, wherein the void is of such configuration as to cause the mass, upon shifting, to induce forces and moments that, after a period of stable ballistic flight, destabilize the projectile and shorten its flight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.