Experimental investigation was conducted to evaluate high-altitude viscous effects on Gemini and Apollo entry vehicles; tests, using free-flight technique, were carried out in Ames 1-ft shock tunnel at Mach 14 and Reynolds number based on freestream conditions and maximum body diameters from 800 to 12,000; lift-drag ratio, lift and drag coefficients, and trim angle of attack were measured; significant reductions in lift-drag ratios with decreasing Reynolds number were observed; it is shown that viscous effects can have significant effect on entry trajectories.


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    Title :

    Free-flight measurements of aerodynamic viscous effects on lifting re-entry bodies


    Additional title:

    J Spacecraft Rockets


    Contributors:

    Published in:

    Publication date :

    1967


    Size :

    6 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :