Accession Number : ADA294414

Title :   Fuzed Insensitive General Purpose Bomb Containing AFX-645.

Descriptive Note : Final rept.,

Corporate Author : WRIGHT LAB EGLIN AFB FL ARMAMENT DIRECTORATE

Personal Author(s) : Corley, John D. ; Stewart, Alan C.

PDF Url : ADA294414

Report Date : MAY 1995

Pagination or Media Count : 90

Abstract : An insensitive high explosive based on TNT, NTO, wax and Aluminum called AFX-645 has been developed for general purpose bombs. This IHE has undergone a series of reformulations over the past four years to improve its processability, control sensitivity and enhance blast performance. Sub-scale and full scale testing in a Mk-82 bomb has been accomplished. Performance measurements including detonation velocity, blast pressure, copper cylinder expansion and fragment velocity indicate performance comparable to Tritonal. Sensitivity testing of the previously developed AFX-644 formulations including friction, impact, thermal stability, electrostatic discharge, cap, gap, Susan, friability, fast cook-off, slow cook-off, bullet impact and sympathetic detonation tests have been accomplished. The explosive has passed the United Nation's Extremely Insensitive Detonating Substance test criteria in its baseline AFX644 formulation. A subsequent less sensitive formulation has passed the most critical of the article tests for the 1.6 hazard classification. Extensive boostering test were done and a complete explosive train to detonate AFX-645 has been designed. This explosive train fits into a slightly modified FMU-139 fuze with a large auxiliary booster stored in a new fuzewell. Minor modifications to the Mk-82 were embodied to incorporate the new fuzewell and explosive train. When installed as a nose or tail fuze in an AFX-645 filled Mk82, the weapon should meet 1.2 hazard classification criteria. jg

Descriptors :   *GENERAL PURPOSE BOMBS, *INSENSITIVE EXPLOSIVES, *BOMB FUZES, TEST AND EVALUATION, VELOCITY, IMPACT, SMALL ARMS AMMUNITION, FORMULATIONS, BLAST WAVES, THERMAL STABILITY, SENSITIVITY, CYLINDRICAL BODIES, COPPER, ALUMINUM, PRESSURE, ELECTRIC DISCHARGES, EXPANSION, FRICTION, NOSES, COOK OFF, TNT, ELECTROSTATICS, FRAGMENTS, SYMPATHETIC DETONATIONS, DETONATIONS, WAXES, TAIL FUZES, EXPLOSIVE TRAINS, TRITONAL EXPLOSIVES.

Subject Categories : Aerial Bombs
      Inorganic Chemistry
      Physical Chemistry
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE