Abstract
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 language | English |
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| Title of host publication | 33rd Thermophysics Conference |
| Publisher | American Institute of Aeronautics and Astronautics Inc, AIAA |
| ISBN (Print) | 9780000000002 |
| Publication status | Published - 1998 |
| Externally published | Yes |
| Event | 33rd Thermophysics Conference, 1999 - Norfolk, United States Duration: 1999 Jun 28 → 1999 Jul 1 |
Other
| Other | 33rd Thermophysics Conference, 1999 |
|---|---|
| Country/Territory | United States |
| City | Norfolk |
| Period | 99/6/28 → 99/7/1 |
ASJC Scopus subject areas
- Engineering(all)