The theoretical basis for an analytical model developed to predict the interior noise levels of high-speed propeller-driven airplanes is presented. Particular emphasis is given to modeling the transmission of discrete tones through a fuselage element into a cavity, estimates for the mean and standard deviation of the acoustic power flow, the coupling between a non-homogeneous excitation and the fuselage vibration response, and the prediction of maximum interior noise levels. The model allows for convenient examination of the various roles of the excitation and fuselage structural characteristics on the fuselage vitration response and the interior noise levels, as is required for the design of model or prototype noise control validation tests. (Krautzing)


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    Title :

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


    Additional title:

    Voraussage des Kabinengeraeuschpegels bei Hochgeschwindigkeits-Propellerflugzeugen


    Contributors:
    Rennison, D.C. (author) / Wilby, J.F. (author) / Wilby, E.G. (author)

    Published in:

    Publication date :

    1980


    Size :

    11 Seiten, 12 Bilder, 8 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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    Catherines, J. J. / Mayes, W. H. | NTRS | 1975


    Interior noise levels of two propeller driven light aircraft

    Catherines, J. J. / Mayes, W. H. | NTRS | 1975


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