Acoustic wind tunnel tests were conducted of a two-dimensional wing section with removable high-lift leading and trailing edge devices and a removeable two-wheel landing gear with open cavity. An array of far field conventional microphones and an acoustic mirror directional microphone were utilized to determine far field spectrum levels and noise source distribution. Data were obtained for the wing with components deployed separately and in various combinations. The basic wing model had 0.305 m (1.00 ft) chord, which is roughly 1/10 scale for a one-hundred passenger transport airplane. Most of the data were obtained at 70.7 and 100 m/sec (232 and 328 ft/sec) airspeeds, which bracket the range of practical approach speeds for such aircraft. Data were obtained at frequence to 40 kHz so that, when scaled to s typical full-airframe, the frequency region which strongly influences preceived noise level would be included.


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    Title :

    Airframe noise component interaction studies


    Contributors:

    Publication date :

    1979-03-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Airframe noise component interaction studies

    FINK, M. / SCHLINKER, R. | AIAA | 1979


    Airframe Noise Component Interaction Studies

    Martin R. Fink / Robert H. Schlinke | AIAA | 1980


    Airframe noise component interaction studies

    Fink, M. R. / Schlinker, R. H. | NTRS | 1979


    Airframe noise component interaction studies

    Fink, M.R. / Schlinker, R.H. | Tema Archive | 1979


    Airframe noise component interaction studies

    Fink, Martin R. / Schlinker, Robert H. | TIBKAT | 1979