| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
The American Ceramic Society Journal Awards Symposium
|
| Presentation Title |
Radiation Heat Transfer During Hypersonic Flight: Fundamentals, Materials and Applications |
| Author(s) |
Rodney W. Trice, Abdullah Al Saad, Carlos Martinez |
| On-Site Speaker (Planned) |
Rodney W. Trice |
| Abstract Scope |
Emissivity as a function of wavelength, direction, and temperature correlates to a material's efficiency in radiating thermal energy. Knowledge of emissivity is essential for designing and developing radiation-cooled thermal protective systems for hypersonic applications. It is desirable to achieve a high emissivity (with a value close to 1) to maximize heat radiation from a hot surface of a hypersonic vehicle's leading edge during atmospheric re-entry. This presentation offers a basic understanding of thermal radiation, methods for measuring emissivity at high temperatures, and an overview of the emissivity of ultra-high temperature ceramics. A recent application discussing the development of a protective multi-layer coating for C/C with a high-emittance rare-earth zirconia-based topcoat will be presented. |