Spectrally resolved Rayleigh scattering diagnostic for hydrogen-oxygen rocket plume studiesA Rayleigh scattering diagnostic has been developed to measure gas density, temperature, and velocity in the exhaust plume of 100 N thrust class hydrogen-oxygen rockets. The spectrum of argon-ion laser light scattered by the gas molecules in the plume (predominantly water vapor) is measured with a scanning Fabry-Perot interferometer. The gas density is determined from the total scattered power, the gas temperature from the spectral width, and the velocity from the shift in the peak of the spectrum from the frequency of the incident laser light. The diagnostic has been demonstrated in a rocket test cell and a discussion of results is given.
Document ID
19910036875
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Seasholtz, R. G. (NASA Lewis Research Center Cleveland, OH, United States)
Zupanc, F. J. (NASA Lewis Research Center Cleveland, OH, United States)
Schneider, S. J. (NASA Lewis Research Center Cleveland, OH, United States)