Temperature-dependent reaction-rate expression for oxygen recombination at Shuttle entry conditionsA temperature-dependent oxygen surface reaction-rate coefficient has been determined from experimental STS-2 heating and wall temperature data at altitudes of 77.91 km, 74.98 km, and 71.29 km. The coefficient is presented in an Arrhenius form and is shown to be less temperature dependent than previous results. Finite-rate viscous-shock-layer heating rates based on this present expression have been compared with predicted heating rates using the previous rate coefficients and with experimental heating data obtained over an extensive range of STS-2 and STS-3 entry conditions. A substantial improvement is obtained in comparison of experimental data and predicted heating rates using the present oxygen reaction-rate expression.
Document ID
19840035169
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zoby, E. V. (NASA Langley Research Center Hampton, VA, United States)
Simmonds, A. L. (NASA Langley Research Center Space Systems Div., Hampton, VA, United States)
Gupta, R. N. (NASA Langley Research Center Hampton; Old Dominion University, Norfolk, VA, United States)