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Estimate of the Dynamic Characteristics of Unsteady Combustion of a Solid Propellant in a Semi-Closed Volume from Measurements of Variable Pressure

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Abstract

The paper presents estimates of the dynamic characteristics of unsteady combustion of a solid rocket propellant in a combustion chamber with in pressure is varied automatically by a specified program. The estimates are obtained from experimental data by mathematical modeling with the use of a simplified model of unsteady processes in the combustion chamber. A linear approximation is obtained for the transfer function of the unsteady-combustion rate, and its coefficients are expressed analytically in terms of the parameters of a simplified model of unsteady processes. Results of identification of the model for several fragments of experimental processes are given. Families of approximate frequency characteristics of the unsteady-combustion rate are constructed, analyzed, and compared with available results.

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Ivanov, S.M., Tsukanov, N.A. Estimate of the Dynamic Characteristics of Unsteady Combustion of a Solid Propellant in a Semi-Closed Volume from Measurements of Variable Pressure. Combustion, Explosion, and Shock Waves 38, 71–80 (2002). https://doi.org/10.1023/A:1014014202751

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