Publication Date:
2016-06-07
Description:
Arc-heated flow facilities with injected particles are used to simulate the erosive and ablative/erosive environments encountered by spacecraft re-entry through fog, clouds, thermo-nuclear explosions, etc. Two newly developed particle diagnostic techniques used to calibrate these facilities are discussed. One technique measures particle velocity and is based on the detection of thermal radiation and/or chemiluminescence from the hot seed particles in a model ablation/erosion facility. The second technique measures a local particle rate, which is proportional to local particle mass flux, in a dust erosion facility by photodetecting and counting the interruptions of a focused laser beam by individual particles.
Keywords:
RESEARCH AND SUPPORT FACILITIES (AIR)
Type:
NASA. Johnson Space Center The 11th Space Simulation Conf.; p 347-377
Format:
application/pdf
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