MUNITIONS WITH INCREASED INITIAL VELOCITY PROJECTILE

摘要

A cartridge casing having an open neck at one axial end and a closed rear portion at the other axial end to form an interior cavity for propellant. A projectile within the open neck to seal the cavity so the bullet is released when the propellant is primed and ignited. The projectile has a proximate end releasably secured within the neck of the casing facing the cavity and exposed to the forces generated by ignited propellant. The remote end of the projectile is formed by a lead core while the proximate end has a transverse surface and is at least partially formed of an amorphous metallic alloy having properties of bulk metallic glass (BMG). Liquid metal alloy can also be used at the interface of a propellant chamber in a bore of a cannon and a cartridge-free projectile.

主权项

1. A munition cartridge comprising a substantially closed casing defining an axis and having an open neck at one axial end and a closed rear portion at the other axial end to form a cavity or chamber for propellant; a projectile releasably mounted within said open neck to seal said cavity and for propelling said projectile along said axis when propellant is ignited, said projectile having a surface interfacing with said cavity or chamber when said projectile is mounted within said neck and is exposed to pressures and forces created within said cavity when the propellant is ignited; a coating or cap covering said interfacing surface on said projectile, said coating or cap being at least partially formed of an amorphous metallic alloy.