The impact of ground proximity on the aerodynamics and trailing vortices of an inverted delta wing was investigated experimentally. The ground proximity always led to a lift and drag increase compared to their outside ground-effect counterpart. The largest lift increment occurred in the low-incidence regime but decreased nonlinearly with increasing incidence. A 145% lift increment for a ground distance of 0.5% chord at 3° incidence was obtained. The ground effect also led to an enlarged trailing vortex with increased rotational speed and vortex strength but a lowered peak vorticity. The trailing vortices moved further outboard with reducing ground distance. The results suggest that winged ground-effect vehicles with an inverted delta-wing planform can benefit from the ground effect for a ground distance up to 40% chord.


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    Title :

    Impact of Ground Proximity on an Inverted Delta Wing


    Contributors:
    Ko, L. S. (author) / Tremblay-Dionne, V. (author) / Lee, T. (author)

    Published in:

    Publication date :

    2020-05-29




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown



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