An analytical model of the structural acoustic behavior of a propeller aircraft including vibration absorbers attached to the fuselage has been developed. The model was then used to study the potential of vibration absorbers for reducing interior noise. The results demonstrate that when the tuned absorbers are correctly configured, attenuation of 6 - 10 dB in the total interior acoustic potential energy is possible. The model also demonstrated that globally detuning the absorbers to minimize an interior acoustic cost function gives improved attenuation over tuned absorbers. Further analysis indicated that the attenuations are relatively insensitive to small changes in the disturbance frequency at the blade passage frequency. The importance of the positioning of the absorbers was also shown.


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    Titel :

    Control of aircraft interior noise using globally detuned vibration absorbers


    Weitere Titelangaben:

    Regelung des Flugzeuginnengeräusches mit Hilfe global verstimmter Schwingungsabsorber


    Beteiligte:
    Fuller, C.R. (Autor:in) / Maillard, J.P. (Autor:in) / Mercadal, M. (Autor:in) / Flotow, A.H. von (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1997


    Format / Umfang :

    17 Seiten, 7 Bilder, 6 Tabellen, 15 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Control of Aircraft Interior Noise Using Globally Detuned Vibration Absorbers

    Fuller, C. R. / Maillard, J. / Von Flotow, A. H. et al. | British Library Conference Proceedings | 1995


    Control of aircraft interior noise using globally detuned vibration absorbers

    Fuller, C.R. / Maillard, J.P. / Mercadal, M. et al. | Tema Archiv | 1995



    Interior noise reduction of composite cylinders using distributed vibration absorbers

    Osman, Haisam / Johnson, Marty / Fuller, Chris et al. | AIAA | 2001