Combustion mechanism of nitro ester binders with nitramines
| Autor: | M.V. Berezin, V. Yu. Egorshev, Sergey A. Filatov, Valery P. Sinditskii, Valery V. Serushkin, A. N. Chernyi |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Combustion, Explosion, and Shock Waves. 48:163-176 |
| ISSN: | 1573-8345 0010-5082 |
| DOI: | 10.1134/s0010508212020062 |
| Popis: | The combustion of binary compositions of nitramines (HMX, RDX, Bi-HMX, and CL-20) with two nitro ester binders, one of which is characterized by gas-phase combustion, and the other by the burning-rate controlling reaction in the condensed phase, was studied in the pressure range 2–15 MPa. It is shown that in compositions with the binder characterized by gas-phase combustion, HMX in concentrations up to 50% acts as an inert additive. Depending on the size and concentration of HMX particles, three types of combustion of the mixtures can be identified: combustion along the binder layers, combustion as a single system, and the model of combustion with a coolant. At higher nitramine concentrations, combustion control passes to nitramine, and the burning-rate controlling reaction occurs in the liquid phase of nitramine. For Bi-HMX and CL-20 nitramines, which are less stable and more fast burning than HMX and in a mixture with a binder characterized by gas-phase combustion, only two combustion models are observed: the model with fast burning additives or combustion as a single unit. In compositions of the nitramines RDX and HMX with a binder burning by the c-phase mechanism, the combustion model with fast burning additives is applicable only in a narrow range of conditions. The compositions mostly burn only as a single unit, and the addition of nitramine increases the burning rate of nitro ester by transferring heat from the overlying zone to the condensed phase. |
| Databáze: | OpenAIRE |
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