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

Masahito Mizuno, Yoshiki Morino, Toshinari Yoshinaka, Yasuo Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


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.

Original languageEnglish
Title of host publication33rd Thermophysics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9780000000002
Publication statusPublished - 1998
Externally publishedYes
Event33rd Thermophysics Conference, 1999 - Norfolk, United States
Duration: 1999 Jun 281999 Jul 1


Other33rd Thermophysics Conference, 1999
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Engineering(all)


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