Accomplishments in vortex flap research are summarized. A singular feature of the vortex flap is that, throughout the range of angle of attack range, the flow type remains qualitatively unchanged. Accordingly, no large or sudden change in the aerodynamic characteristics, as happens when forcibly maintained attached flow suddenly reverts to separation, will occur with the vortex flap. Typical wind tunnel test data are presented which show the drag reduction potential of the vortex flap concept applied to a supersonic cruise airplane configuration. The new technology offers a means of aerodynamically augmenting roll-control effectiveness on slender wings at higher angles of attack by manipulating the vortex flow generated from leading edge separation. The proposed manipulator takes the form of a flap hinged at or close to the leading edge, normally retracted flush with the wing upper surface to conform to the airfoil shape.


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    Titel :

    Wind-tunnel studies of advanced cargo aircraft concepts


    Beteiligte:
    Rao, D. M. (Autor:in) / Goglia, G. L. (Autor:in)

    Erscheinungsdatum :

    1981-09-01


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Wind-Tunnel Studies of Advanced Cargo Aircraft Concepts

    D. M. Rao / G. L. Goglia | NTIS | 1981


    Transport Cargo Aircraft Concepts

    Hornburg, R. C. | SAE Technical Papers | 1973


    Advanced Cargo Handling System Concepts

    D. R. Loose / J. M. Walters | NTIS | 2000