Accession Number : AD0918963

Title :   Detonability of Some Natural Gas-Air Mixtures.

Descriptive Note : Final rept.,

Corporate Author : AIR FORCE ARMAMENT LAB EGLIN AFB FL

Personal Author(s) : Vanta, Elizabeth B. ; Foster, Joseph C., Jr. ; Parsons, Gary H.

Report Date : APR 1974

Pagination or Media Count : 14

Abstract : Seven mixtures (ranging from 5.2 to 12.5 percent by volume) of natural gas in air were screened for their detonability using a bag test method. Erratic, uneven detonations were initiated at the 8.6 to 8.8 percent concentration level, with explosive charges ranging from 1001 to 1020 grams. At all other tested fuel concentrations deflagrations occurred. Although the detonations successfully propagated the entire length of the bag, a steady Chapman-Jouguet type wave front was not observed. The experimental detonation velocities and minimum initiator weight requirements are compared to those obtained in other studies under similar experimental conditions. (Author)

Descriptors :   (*FUEL AIR EXPLOSIVES, DETONATIONS), EXPLOSIVE GASES, AIR, MIXTURES, METHANE, BAGS, TEST METHODS, CONCENTRATION(CHEMISTRY), DEFLAGRATION, EXPLOSIVE CHARGES, PROPAGATION, VELOCITY, EXPLOSIVES INITIATORS, WEIGHT, REQUIREMENTS, CHEMICAL REACTIONS, OVERPRESSURE, PROPANE, DETONATION WAVES.

Subject Categories : Ammunition and Explosives
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE