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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014005382
pages 83-96

A LINEAR STABILITY ANALYSIS OF OSCILLATORY COMBUSTION INDUCED BY COMBUSTION TIME DELAYS OF LIQUID OXIDIZER IN HYBRID ROCKET MOTORS

Takakazu Morita
Department of Aeronautics and Astronautics, Tokai University, 4-1-1Kitakaname, Hiratsuka, Japan
Koki Kitagawa
Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan; The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Toru Shimada
ISAS, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
Shigeru Yamaguchi
Department of Physics, Tokai University, Hiratsuka, Japan

RÉSUMÉ

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.

RÉFÉRENCES

  1. Karabeyoglu, M. A. , Transient combustion in hybrid rockets.

  2. Karabeyoglu, A., Stevens, J. and Cantwell, B. , Investigation of feed system coupled low frequency combustion instabilities in hybrid rockets.

  3. Kitagawa, K. and Yuasa, S. , Combustion characteristics of a swirling LOX type hybrid rocket engine.

  4. Morita, T., Fujiwara, K., Matsuki, A., Yamaguchi, S., and Shimada, T. , A linear stability analysis of hybrid rocket combustion.

  5. Morita, T., Kitagawa, K., Yuasa, S., Yamaguchi, S., and Shimada, T. , Low-frequency combustion instability induced by the combustion time lag of liquid oxidizer in hybrid rocket motors.


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