Radial profile measurements of absolute atomic nitrogen density, temperature, and velocity using two photon laser-induced fluorescence in the NASA Ames Aerodynamic Heating Facility (AHF) are reported. Improvements in experimental technique and calibration procedure significantly reduced measurement uncertainties compared to previous efforts. The addition of a traversing system within the AHF test cabin permitted, for the first time, radial measurements of the three flow properties during a single arcjet run. Typical measurement uncertainties are 12% for absolute N density, 10-30% for temperature, and 3% for velocity. Details of the measurement technique, optical configuration, data analysis procedures, and results of two repeated demonstration runs in air/Ar flows are presented.


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    Title :

    Radial profiles of arcjet flow properties measured with laser-induced fluorescence of atomic nitrogen


    Contributors:


    Publication date :

    2003-01-01


    Size :

    629077 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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    Grinstead, J. H. / Driver, D. M. / Raiche, G. A. et al. | British Library Conference Proceedings | 2003


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