A study of the blown flap/jet flap analogy has been undertaken. Analytical predictions were made using both improved lifting line and optimized vortex lattice models for the jet flap. Results were compared with experimental data for three propulsive lift systems; the jet augmented flap, the externally blown flap, and the upper surface blow flap. Force increments due to changes in geometry and jet parameters were well approximated in most cases, although the absolute values of the aerodynamic forces were usually underestimated. The relatively simple jet-flap models gave performance predictions of accuracy comparable to more complex analyses.


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    Titel :

    A study of the blown flap/jet flap analogy


    Weitere Titelangaben:

    Eine Untersuchung der angeblasenen Klappe und Strahlstromklappe, Analogie


    Beteiligte:
    Hough, G.R. (Autor:in)

    Erschienen in:

    AIAA-Papers ; Jan ; 1-8


    Erscheinungsdatum :

    1979


    Format / Umfang :

    8 Seiten, 11 Bilder, 21 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Externally-blown-flap noise

    DORSCH, R. / KREIM, W. / OLSEN, W. | AIAA | 1972


    Blown flap noise research

    DORSCH, R. / KREJSA, E. / OLSEN, W. | AIAA | 1971


    Externally-blown-flap noise

    Dorsch, R. G. / Kreim, W. J. / Olsen, W. A. | NTRS | 1972


    Externally blown flap impingement noise

    PUTNAM, T. / LASAGNA, P. | AIAA | 1972