An analytical study is described which explores add-on treatments and advanced concepts for the reduction of noise levels in three high-speed aircraft driven by propellers. Noise reductions of 25 to 28 dB are required to achieve a goal of an A-weighted sound level not greater than 80 dB. It is found that only a double-wall system, with a limp inner wall or trim panel, can achieve the required noise reductions. Weight penalties are estimated for the double-wall treatments. These penalties are 0.75 % to 1.51 % of the airplane takeoff weight for the particular baseline designs selected. (Krautzig)


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    Titel :

    Noise control prediction for high-speed, propeller-driven aircraft


    Weitere Titelangaben:

    Schalldaempfungsvoraussage fuer Hochgeschwindigkeitspropellerflugzeuge


    Beteiligte:
    Wilby, J.F. (Autor:in) / Rennison, D.C. (Autor:in) / Wilby, E.G. (Autor:in) / Marsh, A.H. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1980


    Format / Umfang :

    10 Seiten, 17 Bilder, 3 Tabellen, 14 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Noise control prediction for high-speed, propeller-driven aircraft

    WILBY, J. / RENNISON, D. / WILBY, E. et al. | AIAA | 1980


    Noise control prediction for high-speed, propeller-driven aircraft

    Wilby, J. F. / Rennison, D. C. / Wilby, E. G. et al. | NTRS | 1980


    Interior noise control prediction study for high-speed propeller-driven aircraft

    Rennison, D. C. / Wilby, J. F. / Marsh, A. H. et al. | NTRS | 1979


    Noise computation of high-speed propeller-driven aircraft

    Polacsek, C. / Spiegel, P. / Boyle, F. et al. | AIAA | 2000


    Prediction of the interior noise levels of high-speed propeller-driven aircraft

    Rennison, D.C. / Wilby, J.F. / Wilby, E.G. | Tema Archiv | 1980