Spacecraft thermal energy accommodation from atomic recombinationMeasurements of atomic recombination probabilities important in determining energy release to reusable spacecraft thermal protection surfaces during reentry are presented. An experimental apparatus constructed to examine recombination of atomic oxygen from thermal protection and reference materials at reentry temperatures is described. The materials are examined under ultrahigh vacuum conditions to develop and maintain well characterized surface conditions that are free of contamination. When compared with stagnation point heat transfer measurements performed in arc jet facilities, these measurements indicate that a significant fraction of the excess energy available from atom recombination is removed from the surface as metastable O2.
Document ID
19910058783
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carleton, Karen L. (Physical Sciences, Inc. Andover, MA, United States)
Marinelli, William J. (Physical Sciences, Inc. Andover, MA, United States)