Closed-form relations are presented for estimating ratios of the induced-drag and lift coefficients acting on a wing in ground effect to those acting on the same wing outside the influence of ground effect. The closed-form relations for these ground-effect influence ratios were developed by correlating results obtained from numerical solutions to Prandtl’s lifting-line theory. Results show that these influence ratios are not unique functions of the ratio of wing height to wingspan, as is sometimes suggested in the literature. These ground-effect influence ratios also depend on the wing planform, aspect ratio, and lift coefficient.


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    Title :

    Lifting-Line Predictions for Induced Drag and Lift in Ground Effect


    Contributors:

    Published in:

    Journal of Aircraft ; 50 , 4 ; 1226-1233


    Publication date :

    2013-07-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Lifting-Line Predictions for Induced Drag and Lift in Ground Effect

    Phillips, Warren F. / Hunsaker, Douglas F. | AIAA | 2013



    Lifting-Line Predictions for Induced Drag and Lift in Ground Effect

    Phillips, W.F. / Hunsaker, D.F. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2013