RT Journal Article ID 031c13d34dedc6bd A1 Morita, Takakazu A1 Kitagawa, Koki A1 Shimada, Toru A1 Yamaguchi, Shigeru T1 A LINEAR STABILITY ANALYSIS OF OSCILLATORY COMBUSTION INDUCED BY COMBUSTION TIME DELAYS OF LIQUID OXIDIZER IN HYBRID ROCKET MOTORS JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 2014 FD 2014-04-04 VO 13 IS 1 SP 83 OP 96 K1 unstable combustion K1 low frequency K1 stability limit K1 polytropic process AB This paper presents a theoretical analysis of combustion instabilities induced by the combustion time delay of liquid oxidizer in hybrid rocket motors. In order to examine the low-frequency unstable combustion of the motors, the transfer function of the feed system of a hybrid rocket was coupled with that of the full thermal−combustion−gas-dynamic coupled system. This transfer function is applicable to the motors that have a long fuel port length. The linear stability limits and the frequencies of neutral oscillations in the hybrid rocket motors were obtained theoretically, using the coupled transfer function. In addition, we compared these results with results obtained under the assumption that various physical quantities change in bulk mode. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,76c2cb2847ba870e,031c13d34dedc6bd.html