Accession Number:

ADA009356

Title:

Physicochemical Details at the Surface of Burning Illumination Flares

Descriptive Note:

Rept. for 1 Jul 1973-31 Dec 1974

Corporate Author:

NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s):

Report Date:

1975-04-01

Pagination or Media Count:

22.0

Abstract:

The surface processes during the combustion of magnesiumsodium nitratebinder 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.

Subject Categories:

  • Physical Chemistry
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE