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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.142 SNIP: 0.16 CiteScore™: 0.29

ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015011757
pages 381-398

COMBUSTION BEHAVIORS AND MECHANISM OF AP-BASED COMPOSITIONS WITH NITROESTER BINDERS

Valery P. Sinditskii
Department of Chemical Engineering, Mendeleev University of Chemical Technology, Moscow, 125047, Russia
Anton N. Chernyi
Department of Chemical Engineering, Mendeleev University of Chemical Technology, 9 Miusskaya Sq., 125047, Moscow, Russia
Valery V. Serushkin
Department of Chemical Engineering, Mendeleev University of Chemical Technology, Moscow, 125047, Russia
Sergey A. Filatov
Department of Chemical Engineering, Mendeleev University of Chemical Technology, Moscow, 125047, Russia

要約

This paper describes results of the combustion study of binary compositions of ammonium perchlorate (AP) of various fractions with nitroester-based binders, the combustion of which obeys two different mechanisms: a gas-phase mechanism inherent to volatile energetic materials and a mechanism with the leading reaction in the condensed phase. For binders, where combustion obeys a gas-phase mechanism, three combustion models can be realized depending on the AP particle size and content. The maximum rate is achieved with an excess of the oxidizer, which is indicative of nonparticipation of a part of the oxidizer (NO and N2O) in the redox reactions in the leading flame. The addition of AP to the binder, where burning is driven by reactions in the condensed phase, results in changing the combustion mechanism. The combustion instability of mixtures with 30−35% AP was observed in the low-pressure region, which lies between two pressure intervals, combustion within one of which is subject to the Merzhanov−Dubovitskii model, and within the other one, the burning obeys the gas-phase model. The ability of the mixtures to sustain combustion in the entire range of 0.1−15 MPa is restored by addition of more than 50% AP.


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