The hydrogen vent valve on the outside of the Space Shuttle External Tank is ordered to close right before launch and should remain closed during flight. However, there is an accepted risk that a small amount of leakage of hydrogen during flight may occur. There is a possibility that the mixing of the leaking hydrogen with the ambient air may form a combusting plume if ignited. The impingement of the burning plume on the External Tank may damage its Thermal Protection System. A series of computational studies were performed to predict the heating of the Thermal Protection System by the impingement of the hydrogen flame. The calculations were based on solutions of the three-dimensional compressible Navier-Stokes equations together with a two-equation turbulence model and a two-reaction global hydrogen combustion model. Predicted heat fluxes compared well with available experimental data. The final results will be useful to help design a stronger Thermal Protection System to withstand such a flame impingement scenario.


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    Titel :

    Computational studies of venting hydrogen flame impingement on the space shuttle external tank


    Weitere Titelangaben:

    Berechnung der Wirkung von durch Wasserstoffleckage verursachten Flammen auf den Aussenbehaelter der Raumfaehre


    Beteiligte:
    Chan, P.C. (Autor:in) / Klein, H.H. (Autor:in)

    Erschienen in:

    AIAA-Papers ; Jan ; 1-16


    Erscheinungsdatum :

    1989


    Format / Umfang :

    16 Seiten, 21 Bilder, 4 Tabellen, 9 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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    MIRONER, A. / REGAN, F. | AIAA | 1983


    Space Shuttle External Tank.

    Zoller, L. K. | NTRS | 1973


    Space shuttle compartment venting Final report

    Haukohl, J. / Robertson, S. J. | NTRS | 1971


    Space shuttle orbiter venting: Lessons learned

    Lutfi, H. S. / Nieder, R. L. | NTRS | 1983