Accession Number : AD0900585

Title :   Mk 78 20 mm Fuze Malfunction Investigation,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Frost, Jack A.

Report Date : 01 OCT 1971

Pagination or Media Count : 25

Abstract : The Mk 78 Mod 1 20mm Point Detonating Fuze (PDF) breakups, prematures, and separations of fuzes from projectiles occurred when 20mm Mk 106 high explosive-incendiary rounds were fired from the 20mm aircraft gun pod Mk 4 with the Mk 11 gun. This prompted an investigation of the cause of fuze malfunctions. Conclusions and recommendations are made for both fuze and gun.

Descriptors :   (*POINT DETONATING FUZES, FAILURE), PROJECTILE FUZES, PROJECTILE CAPS, SEPARATION, ALUMINUM, ORDNANCE STEEL, HIGH EXPLOSIVE AMMUNITION, INCENDIARY AMMUNITION, BOOSTERS(EXPLOSIVES), FUZE FUNCTIONING ELEMENTS, ARMING DEVICES, GUN BARRELS, AIRCRAFT GUNS, FIRING TESTS(ORDNANCE), EXTERIOR BALLISTICS, BLAST, RECOIL MECHANISMS, IMPACT SHOCK, CARTRIDGES, FAILURE(MECHANICS).

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE