Propagation Rates in Thermally Ignited Pyrotechnic Compositions.

Abstract

The propagation rates that occur in loose, granular, confined pyrotechnic compositions were determined for thermal initiation. The same compositions under the same conditions were previously shown to detonate with strong shock initiation. All of the compositions tested developed fast reaction rates which could be extremely hazardous. Burning was found to accelerate to a high rate; this is best explained by a convective burning mechanism. Since the final reaction rates of the loose powder appeared to exceed the speed of sound, they are categorized as detonative. Since most rates measured were substantially lower than those observed for strong shock initiation and only slightly higher than the estimated speed of sound, they were considered to be non-ideal, low-order detonations. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1978
Accession Number
ADA060809

Entities

People

  • Richard W. Collett

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Burning Rate
  • Chemical Compounds
  • Chemical Reactions
  • Combustion
  • Combustion Products
  • Energetic Materials
  • Energy
  • Engineering
  • Explosions
  • Explosives
  • Heat Transfer
  • High Pressure
  • Materials
  • Materials Science
  • Mechanical Properties
  • Particle Size
  • Resistance

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Explosive Engineering.
  • Plasma Physics.