Combustion of a propellant and its extinction upon rapid depressurization: A comparison of theory and experiment

The combustion of a nitroglycerin-based propellant and its extinction as a result of exponential pressure decay was studied on a bomb-receiver setup. At moderate depths and rates of pressure decay, the transient process ends with adoption of a new steady-state combustion mode. There are critical val...

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Bibliographic Details
Published in:Russian journal of physical chemistry. B 2011-06, Vol.5 (3), p.474-481
Main Authors: Marshakov, V. N., Novozhilov, B. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Combustion
Explosion
Physical Chemistry
Shock Waves
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Summary:The combustion of a nitroglycerin-based propellant and its extinction as a result of exponential pressure decay was studied on a bomb-receiver setup. At moderate depths and rates of pressure decay, the transient process ends with adoption of a new steady-state combustion mode. There are critical values of the depth and rate of pressure decay above which combustion ceases. Numerical simulations are used to determine a relationship between the critical values of these quantities (extinction curves). The calculations are performed within the framework of the phenomenological theory of unsteady combustion of energetic condensed systems using known steady-state laws of propellant combustion. A comparison of experimental and theoretical results demonstrates their satisfactory agreement.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793111020369