A series of wind tunnel tests were run on 60 and 75 deg sweep delta wings to examine the effectiveness of leading-edge vortex flaps. Tests results showed that leading-edge vortex flaps are effective in giving large increases in lift-to-drag ratio and decreases in drag over a wide range of angle of attack. Tests on inverted flaps on the 60 deg delta wing showed substantial increases in lift and drag and may indicate a possibility of using inverted flaps on delta wings in the landing portion of flight. The 60 deg data were compared with that for a 75 deg sweep delta wing confirming that leading-edge vortex flap effectiveness is stronger as sweep is increased. Pitching moment effects due to vortex flaps use were also examined.


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    Title :

    Effectiveness of leading-edge vortex flaps on 60 and 75 degree delta wings


    Contributors:

    Published in:

    Publication date :

    1981-04-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :





    Leading- and trailing-edge flaps on supersonic delta wings

    HERNANDEZ, GLORIA / WOOD, RICHARD M. / COLLINS, ROBERT E. | AIAA | 1990


    Leading- and trailing-edge flaps on supersonic delta wings

    Hernandez, Gloria / Wood, Richard M. / Collins, Robert E. | NTRS | 1990