Local measurement of temperatures and concentrations: A review for hypersonic flowsThe quality of reentry simulation for Shuttle, HERMES, Sanger, and NASP systematically suffers from the strong non-equilibrium of rotational and vibrational temperature due to the rapid acceleration of the test gas in the nozzle. Therefore the determination of temperatures is necessary and, if possible, preferable by a non-intrusive technique. The specific interests of this review are optical techniques such as electron beam fluorescence, laser-induced fluorescence, and coherent anti-Stokes Raman scattering. The capabilities available for local measurements with temporal resolution and quantitative accuracy are discussed for velocity, temperature, density, species concentrations, and fluctuations due to turbulence. The applicability of these methods of measurement is presented and discussed for the coming topic in aerothermodynamics: experimental techniques of hot gases in high enthalpy flows.
Dankert, C. (Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt Goettingen, Germany)
Cattolica, R. (California Univ. San Diego., United States)
Sellers, W. (NASA Langley Research Center Hampton, VA, United States)
August 16, 2013
April 1, 1993
Publication: AGARD, Theoretical and Experimental Methods in Hypersonic Flows