Evaluation of reaction rate constants for thermal protection materials in dissociated air flow

Masahito Mizuno, Yoshiki Morino, Toshinari Yoshinaka, Yasuo Watanabe

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Catalytic characteristics of thermal protection materials were evaluated from high-enthalpy wind tunnel test data and approximate solutions of aerodynamic heating rates. Test specimens were C/C materials with chemical vapor deposition (CVD) SiC coating. Material catalysis was evaluated using aerodynamic heating test data obtained by both a 750 kW arc-heated wind tunnel of the National Space Development Agency of Japan (NASDA) and a 1 MW magnetoplasma dynamic wind tunnel of the Institut für Raumfahrtsysteme of the University Stuttgart (IRS). Aerodynamic heating rates on the surface of the specimen were calculated based on the surface temperature distribution. On the other hand, the fully catalytic heating rate was calculated from the heat flux measurements. The ratio of these values is compared with the theoretical values (based on Goulard’s theory) and recombination rate constant is estimated. Recombination reaction rate constants in case of active oxidation mode tend to be larger than those of passive oxidation mode. This difference between active and passive oxidation modes is discussed in order to verify the proposed estimation method.

本文言語English
ホスト出版物のタイトル33rd Thermophysics Conference
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9780000000002
出版ステータスPublished - 1998
外部発表はい
イベント33rd Thermophysics Conference, 1999 - Norfolk, United States
継続期間: 1999 6 281999 7 1

Other

Other33rd Thermophysics Conference, 1999
国/地域United States
CityNorfolk
Period99/6/2899/7/1

ASJC Scopus subject areas

  • 工学(全般)

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