Physicochemical Details at the Surface of Burning Illumination Flares

Abstract

The surface processes during the combustion of magnesium/sodium nitrate/binder illumination flares were observed using color cinephotomicrography. Examination of the films has led to several conclusions relative to the physicochemical details of pyrotechnic combustion of a limited class of materials. In binder-containing flares the surface temperature has been inferred at between 380C and 651C. The major means of removal of magnesium from the surface is expulsion in the condensed phase as a result of local overpressure due to interfacial oxidation and subsequent gasification of molten binder. The effect on intensity, efficiency and burning rate of magnesium particle size and content was examined, as well as of binder type and content. When little or no binder is present completely different processes dominate and surface temperatures are much higher.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA009356

Entities

People

  • D. E. Zurn
  • J. L. Eisel

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Burning Rate
  • Chemical Compounds
  • Chemistry
  • Classification
  • Combustion
  • Films
  • Libraries
  • Materials
  • Motion Pictures
  • Particle Size
  • Security
  • Surface Properties
  • Surface Temperature
  • Test And Evaluation
  • Weapons

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Rocket Propulsion.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference