The near-field aeroacoustic environment of a 6.02 pct scale advanced short takeoff and vertical landing aircraft is investigated in proximity to a simulated ground plane. The screech and impingement-tone characteristics of twin supersonic round and rectangular plumes are shown to be highly dependent on nozzle geometry and height above the ground plane. Shadowgraph and laser-sheet flow visualization are used to clarify the flowfield mechanisms responsible for time-dependent loads due to screech, impingement tones, and unsteady impingement of the upwash on the fuselage undersurface. Detailed dynamic pressure measurements from an array of transducers on the fuselage confirms that fountain impingement is responsible for the greatest unsteady loading.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Aeroacoustic environment of an advanced STOVL aircraft in hover


    Contributors:

    Publication date :

    1990-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Aeroacoustic environment of an advanced STOVL aircraft in hover

    WLEZIEN, RICHARD / FERRARO, PETER | AIAA | 1990


    Performance Analysis of STOVL Aircraft Nozzle in Hover

    Lu, Frank / Terrier, Douglas | AIAA | 2003


    Performance Analysis of STOVL Aircraft Nozzle in Hover

    Lu, F. K. / Terrier, D. A. / AIAA | British Library Conference Proceedings | 2003