Accession Number : ADD017919

Title :   Ammunition Cartridge with Reduced Propellant Charge.

Descriptive Note : Patent Application, filed 14 Aug 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Watson, Fred W , Jr

PDF Url : ADD017919

Report Date : 14 Aug 1995

Pagination or Media Count : 12

Abstract : An ammunition cartridge having a reduced propellant charge and an initial reduced cartridge volume is provided. The cartridge volume is reduced by partially filling the cartridge case with a foam filler using a male mold form. The male mold form is sized to provide the desired propellant volume and tapered to maintain the desired cartridge pressure during the propellant burn. Alternately, the foam filler may be formed externally and inserted into the cartridge case. In that embodiment an adhesive retainer is used to secure the foam filler to the base of the case. During firing, the foam filler is turned into a gas, thereby providing the large volume of the case for expansion of the propellant gases. After firing, the case is free of residue, all of the foam filler having been expelled as a gas.

Descriptors :   *PATENT APPLICATIONS, *AMMUNITION, *PROPELLING CHARGES, *CARTRIDGE CASES, VOLUME, GASES, REDUCTION, PROPELLANTS, PRESSURE, MALES, FOAM, FILLERS, CARTRIDGES, MOLDS(FORMS), PROPELLANT BURN OUT

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE