Reference is made to previous experiment, indexed in Engineering Index 1963 p 2349; present study is extended toward lower static pressures and higher Mach number; results indicated that in region of lower pressures, where large amounts of supercooling are regularly obtained, air behaves essentially as pure nitrogen, indicating that it is spontaneous condensation of nitrogen which triggers onset phenomenon at low pressures; theoretical analysis supports findings; new method for determining conservative value of minimum stagnation temperature insures condensation-free flow when operating hypersonic wind tunnel with either air or nitrogen.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Condensation of air and nitrogen in hypersonic wind tunnels


    Additional title:

    AIAA J


    Contributors:
    Daum, F.L. (author) / Gyarmathy, G. (author)

    Published in:

    AIAA Journal ; 6 , n 3


    Publication date :

    1968


    Size :

    8 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Condensation in hypersonic nitrogen wind tunnels

    LEDERER, MELISSA / HUDSON, SUSAN / GRIFFITH, WAYLAND et al. | AIAA | 1990