Unsteady aerodynamic derivative changes due to shock and flow separation are examined; unconservative results can be obtained for flutter if supercritical pressure distribution effects are not accounted for; theoretical, wind-tunnel, and flight-test results of derivatives and resulting flutter speeds are compared; examples of two- and three-dimensional effects of supercritical unsteady aerodynamics are shown; if care is taken to represent unsteady derivatives with proper phase angle and magnitude along wing correcting for depth of penetration into supercritical regime, predicted results will compare relatively well with flight test results. (12096)


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    Title :

    Supercritical flow effects on some unsteady aerodynamic coefficients used for flutter analysis


    Additional title:

    J Aircraft


    Contributors:

    Published in:

    Publication date :

    1968


    Size :

    9 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :




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