Abstract
Transpiration active cooling is a new concept for the metallic thermal protection system used to increase the capacity of thermal load-bearing in potential application of hypersonic vehicle. The basic principle of the active transpiration cooling is analyzed. The transpiration cooling metallic thermal protection structure is designed and the experiment is performed. The temperature data measured by test are compared with that of the uncooled structure. Results show that actively cooled structure takes more long time to reach to the same temperature than the uncooled one, the temperature of inner structure is lower than the boiling point temperature of water under that pressure. Moreover, the total thermal load-bearing increases up 70%. Deform of hot skin of the actively cooled structure caused by heat expansion is avoided by using the special shape slots.
| Original language | English |
|---|---|
| Pages (from-to) | 433-438 |
| Number of pages | 6 |
| Journal | Yuhang Xuebao/Journal of Astronautics |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2011 |
| Externally published | Yes |
Keywords
- Active cooling
- Hypersonic vehicle
- Metallic thermal protection system
- Transpiration cooling
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