The construction, calibration, and properties of a facility for measuring sound transmission through aircraft type panels are described along with the theoretical and empirical methods used. Topics discussed include typical noise source, sound transmission path, and acoustic cabin properties and their effect on interior noise. Experimental results show an average sound transmission loss in the mass controlled frequency region comparable to theoretical predictions. The results also verify that transmission losses in the stiffness controlled region directly depend on the fundamental frequency of the panel. Experimental and theoretical results indicate that increases in this frequency, and consequently in transmission loss, can be achieved by applying pressure differentials across the specimen.


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    Title :

    A research to reduce interior noise in general aviation airplanes. General aviation interior noise study


    Contributors:

    Publication date :

    1977-08-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :


    A research program to reduce interior noise in general aviation airplanes

    Peschier, T. D. / Andrews, D. / Henderson, T. | NTRS | 1977


    A research program to reduce interior noise in general aviation airplanes

    Roskam, J. / Muirhead, V. U. / Smith, H. W. et al. | NTRS | 1977


    General Aviation Interior Noise

    Unruh, James F. / Till, Paul D. / Palumbo, Daniel L. | NTRS | 2002


    General Aviation Interior Noise

    Unruh, James F. / Till, Paul D. / Palumbo, Daniel L. | NTRS | 2002


    General Aviation Interior Noise

    Unruh, James F. / Till, Paul D. / Palumbo, Daniel L. | NTRS | 2002