Conveners
Facilities
- Brett Cruden (AMA Inc/NASA Ames)
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Dr Christopher James (The University of Queensland)27/03/2019, 14:30Facilities
Future space missions, such as planned asteroid sample return missions or interplanetary missions such as return from Mars, will involve entry speeds from 13 to 15km/s. While current hyperbolic Earth re-entry conditions such as Apollo, Hayabusa, and Stardust all featured some degree of radiative heating, a 15 km/s Earth entry will cross the threshold into the region where radiative heat flux...
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29. EXPANSION TUBE EXPERIMENTS OF GRAPHITE ABLATION AND RADIATION IN HYPERVELOCITY EARTH-ENTRY FLOWSMr Ranjith Ravichandran (School of Mechanical and Mining Engineering, The University of Queensland, Australia)27/03/2019, 15:00Facilities
The atmospheric entry of spacecraft is characterized by very high entry speeds and the formation of a bow shock in front of the blunt body. The sudden deceleration of the vehicle converts the kinetic energy of the vehicle into thermal energy of the gas which gets dissipated in the form of convective and radiative heat transfer. The gas species trapped inside the shock layer undergo a very high...
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Sean McGuire27/03/2019, 15:30Facilities
For manned missions beyond earth orbit, the radiative heat flux is expected to represent a significant portion of the total heat flux to the capsule surface. This is due to the high entry speeds and large capsule sizes expected.[1, 2] Examples of where the radiative heat flux becomes substantial include missions to Venus [1] and Mars return to earth missions[3]. A substantial portion of this...
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