A transatmospheric vehicle (TAV) using airbreathing propulsion requires a long acceleration period within the denser part of the atmosphere to reach orbital speed. The long flight time, coupled with the need for a low-drag configuration, results in severe heating of parts of the vehicle. The ascent peak stagnation point and wing leading edge equilibrium wall temperatures are about 3500 K and 2500 K, respectively, likely requiring some form of mass addition cooling. The corresponding temperatures during entry are 1000 K lower. The vehicle windward centerline temperatures are more moderate, with values peaking around 1300 K during both ascent and entry. Therefore, radiative cooling should be effective over large areas of the vehicle. The windward centerline heat loads during entry are comparable to those for low acceleration ascent trajectories. However, ascent heat loads for the stagnation point and the wing leading edge are about three times higher than those during entry. For comparison, the entry heat load for the TAV's stagnation point is about three times higher than the value for Shuttle. Therefore the ascent heat load at the TAV's stagnation point exceeds the Shuttle's entry value by an order of magnitude.


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    Title :

    Aerothermodynamics of transatmospheric vehicles


    Contributors:

    Publication date :

    1986-06-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Aerothermodynamics of transatmospheric vehicles

    TAUBER, M. / MENEES, G. / ADELMAN, H. | AIAA | 1986


    Aerothermodynamics of transatmospheric vehicles

    Tauber, Michael E. / Menees, Gene P. / Adelman, Henry G. | NTRS | 1987


    Aerothermodynamics of transatmospheric vehicles

    TAUBER, MICHAEL E. / MENEES, GENE P. / ADELMAN, HENRY G. | AIAA | 1987



    Nonequilibrium Effects on the Aerothermodynamics of Transatmospheric and Aerobraking Vehicles

    Hassan, B. / Candler, G. V. / AIAA | British Library Conference Proceedings | 1993