Radiation heat transfer during hypersonic flight: A review of emissivity measurement and enhancement approaches of ultra‐high temperature ceramics
Abstract
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. With the goal of providing the hypersonic materials community with this necessary knowledge, this article offers a basic understanding of thermal radiation, methods for measuring emissivity at high temperatures, and a comprehensive overview of the emissivity of ultra‐high temperature ceramics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 13, 2023
- Source ID
- 10.1002/ces2.10171
Entities
People
- Abdullah Al Saad
- Carlos J. Martinez
- Rodney W. Trice
Organizations
- Office of Naval Research
- Purdue University