Ignition and Fire Suppression in Aerospace Vehicles (Phase II)

Abstract

The effectiveness of Halons 1301 (CF3BR), 1202 (CF2Br2), and 1211 (CF2ClBr) as possible explosion suppressants for aircraft fuel tanks was investigated in ignitions with small charges of an IM-11 incendiary powder (Ba(NO3)2-Mg-Al) and 30-caliber incendiary ammunition. Ignitions with the incendiary powder in a 74 gallon fuel tank indicated that over 8 volume percent Halon 1301 is required to fully quench flame propagations of near-stoichiometric n-pentane-air mixtures and limit the pressure rises to less than 5 psi; such high Halon concentrations were also required under gun firing conditions using the 30-caliber ammunition. The critical Halon requirements for quenching the incendiary ignitions of n-pentane-air mixtures did not appear to differ greatly for the three Halons investigated in this work.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1972
Accession Number
AD0755362

Entities

People

  • George H. Martindill
  • Joseph M. Kuchta
  • Ralph J. Cato

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerospace Craft
  • Air Force
  • Aircrafts
  • Alkanes
  • Ammunition
  • Barometric Pressure
  • Combustion
  • Combustion Products
  • Contracts
  • Explosions
  • Fire Protection
  • Fire Suppression
  • Fires
  • Fuel Tanks
  • Ignition
  • Incendiary Ammunition
  • Safety

Readers

  • Combustion science or combustion engineering.
  • Fire Suppression Systems Design.
  • Rocket Propulsion.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster