The model was a 1/6.5-size, semipan version of a wing proposed for an executive-jet-transport airplane. The model was tested with a normal wingtip, a wingtip with winglet, and a normal wingtip ballasted to simulate the winglet mass properties. Flutter and aerodynamic data were acquired at Mach numbers (M) from 0.6 to 0.95. The measured transonic flutter speed boundary for each wingtip configuration had roughly the same shape with a minimum flutter speed near M=0.82. The winglet addition and wingtip mass ballast decreased the wing flutter speed by about 7 and 5 percent, respectively; thus, the winglet effect on flutter was more a mass effect than an aerodynamic effect.


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    Title :

    Transonic flutter study of a wind-tunnel model of a supercritical wing with/without winglet


    Contributors:

    Conference:

    AIAA/ASME/ASCE/AHS Struct., Structural Dyn. and Mater. Conf., ; 1982 ; New Orleans, LA, United States


    Publication date :

    1982-03-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English







    Transonic flutter model study of a supercritical wing and winglet

    Ruhlin, C. L. / Rauch, F. J., Jr. / Waters, C. | NTRS | 1983


    Transonic flutter model study of a supercritical wing and winglet

    RUHLIN, C. L. / RAUCH, F. J. / WATERS, C. | AIAA | 1983