Flight test experiments were conducted to measure the extent and nature of natural laminar flow on a smoothed test region of a swept-wing business jet wing. Surface hot film aneraometry and sublimating chemicals were used for transition detection.Surface pressure distributions were measured using pressure belts. Engine noise was monitored by a microphone attached to the wing surface to study possible acoustic effects on stability of the laminar boundary layer, Side-slip conditions were flown to simulate changes in effective wing sweep. Flight instrumentation and ground data analysis techniques and a method for measuring intermittency of turbulence are described, Correlation was obtained between the hot film gage signals and chemicals for transition detection. Cross-flow vortices were observed for some flight conditions. Results of spectral and statistical analysis of the hot film signals for various flight test conditions are presented.


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    Titel :

    Further Results of Natural Laminar Flow Flight Test Experiments


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Ahmed, A. (Autor:in) / Nyenhuis, R. (Autor:in) / Wentz, W. H. (Autor:in)

    Kongress:

    General Aviation Aircraft Meeting and Exposition ; 1985



    Erscheinungsdatum :

    1985-04-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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