A wind-tunnel study is described in which it was attempted to compare the measured flutter boundaries of two dynamically similar aeroelastic models with identical planform, maximum thickness-to-chord ratio, and as nearly identical stiffness and mass distributions as possible, but with one wing having a supercritical airfoil and the other a conventional one. At subsonic Mach numbers, the flutter boundary for the supercritical wing was above that of the conventional wing, as predicted by flutter calculations using subsonic lifting theory. In the transonic region, however, the supercritical wing boundary decreases more rapidly and the minimum flutter point occurs at a dynamic pressure below the conventional wing boundary. Airfoil shape effects may account for some of the difference in the flutter boundaries of the two airfoils.


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    Title :

    Comparison of supercritical and conventional wing flutter characteristics


    Contributors:

    Conference:

    Structures, Structural Dynamics, and Materials Conference ; 1976 ; King of Prussia, PA


    Publication date :

    1976-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Comparison of supercritical and conventional wing flutter characteristics

    Farmer, M. G. / Hanson, P. W. / Wynne, E. C. | NTRS | 1976


    Comparison of Supercritical and Conventional Wing Flutter Characteristics

    M. G. Farmer / P. W. Hanson / E. C. Wynne | NTIS | 1976




    Supercritical Wing Flutter

    J. A. McGrew / J. P. Giesing / R. M. Pearson et al. | NTIS | 1978