Accession Number:

ADA359156

Title:

Study of Combustion Mechanism of Nitramine-Polymer Mixtures

Descriptive Note:

Final rept. 15 Sep 97-15 Nov 98

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES MOSCOW INST OF CHEMICAL PHYSICS

Personal Author(s):

Report Date:

1998-11-01

Pagination or Media Count:

17.0

Abstract:

Combustion mechanism of mixtures of RDX- and HMX-copolymer like HTPB was investigated by microthermocouple techniques. The following parameters were found and analysed at different pressures, sample initial temperatures and oxidizer content burning rates, burning surface temperatures, temperatures and sizes of different zones of combustion waves, thickness of heat and melted layers in solid, characteristic thickness and conductive sizes in the gas phase, heat release in solid, heat feedback from gas to solid, heat release rate in gas, macrokinetic laws of solid gasification, temperature sensitivities of burning rate and burning surface temperature. It was established that the significant heat release in solid and the weak heat feedback from gas to solid are observed for all mixtures. The control region in the combustion waves which governs the burning rate is placed in solid and in a thin gas layer close to surface. It was found that increase of the amount of oxidizer in the mixtures decreases temperature sensitivities of burning rate and burning surface temperature for both oxidizers.

Subject Categories:

  • Organic Chemistry
  • Polymer Chemistry
  • Combustion and Ignition
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE