Both thermocouple data and flight-derived axial force coefficients have been used to determine the freestream flight conditions at which boundary-layer transition occurs on the windward surface of the Space Shuttle Orbiter during reentry. Boundary-layer-edge local flow conditions corresponding to transition at thermocouple locations on the Orbiter windward centerline have also been computed. Tables of the freestream conditions and the local flow conditions at transition are included. Transition occurred over a freestream Mach number range of 6.6 to 17.9 and Reynolds number range of (2.3-9.6) x 10 to the 6th. The roughness state of the Orbiter vehicles is also discussed and correlated to the occurrence of transition. Using the distributed roughness transition correlation of Bertin et al. (1982), a flight-derived roughness height of 0.061 inches was obtained. An average flight-derived roughness height of 0.103 inches for a discrete roughness element in the nose region was obtained using the correlation of Van Driest and Blumer (1968).


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    Title :

    Review of boundary layer transition flight data on the Space Shuttle Orbiter


    Contributors:
    Bouslog, S. A. (author) / An, M. Y. (author) / Hartmann, L. N. (author) / Derry, S. M. (author)

    Publication date :

    1991-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :



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