Accession Number : AD0893770

Title :   Performance of 7.62mm Ablative Ammunition.

Descriptive Note : Final rept. Jun 70-Jun 71,

Corporate Author : CORNELL AERONAUTICAL LAB INC BUFFALO NY

Personal Author(s) : Brown, W. R.

Report Date : OCT 1971

Pagination or Media Count : 42

Abstract : A study is reported in which standard NATO 7.62mm ammunition with and without ablative fluid modification, was tested for effects on barrel temperatures and erosion. This modified ammunition is characterized by a Neoprene capsule containing silicone fluid ablator placed within the case in front of a precompressed propellant charge. Rapid-fire tests of 2800 standard and 2800 ablative rounds were conducted using the M60 machine gun utilizing barrels machined to the dimensions of those used in the 7.62mm Minigun but having no liner or chrome plating. After preliminary testing, 2800 ablative rounds were fired in schedules of 700 rounds without gun malfunction. Failure of the barrels by either yaw or velocity criteria was not observed for either standard or ablative ammunition. (Author)

Descriptors :   (*AMMUNITION COMPONENTS, PERFORMANCE(ENGINEERING)), (*GUN BARRELS, HEATING), SILICONES, SYNTHETIC RUBBER, ENCAPSULATION, PROPELLING CHARGES, CARTRIDGE CASES, ASSEMBLY, FIRING TESTS(ORDNANCE), INTERIOR BALLISTICS.

Subject Categories : Ammunition and Explosives
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE