An iodine hypersonic wind tunnel for the study of nonequilibrium reacting flowsA pilot scale hypersonic wind tunnel operating on pure iodine vapor has been designed and tested. The wind tunnel operates intermittently with a run phase lasting approximately 20 minutes. Successful recirculation of the iodine used during the run phase has been achieved but can be improved. Relevant issues regarding the full scale facility's design and operation, and the use of iodine as a working gas are discussed. Continuous wave laser induced fluorescence was used to monitor number densities within the plume flowfield, while pulsed laser induced fluorescence was used in an initial attempt to measure vibrational energy state population distributions. Preliminary nozzle flow calculations based on finite rate chemistry are presented.
Document ID
19920044350
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pham-Van-diep, G. C. (NASA Headquarters Washington, DC United States)
Muntz, E. P. (NASA Headquarters Washington, DC United States)
Weaver, D. P. (NASA Headquarters Washington, DC United States)
Dewitt, T. G. (NASA Headquarters Washington, DC United States)
Bradley, M. K. (NASA Headquarters Washington, DC United States)
Erwin, D. A. (NASA Headquarters Washington, DC United States)
Kunc, J. A. (Southern California, University Los Angeles, CA, United States)