Noise generated in aircraft engines is usually suppressed by acoustically treating the engine ducts. The optimization of this treatment requires an understanding of the transmission and attenuation of the acoustic waves. A critical review is presented of the state of the art regarding methods of determining the transmission and attenuation parameters and the effect on these parameters of (1) acoustic properties of liners, (2) the mean velocity, including uniform and shear profiles and nonparallel flow, (3) axial and transverse temperature gradients, (4) slowly and abruptly varying cross sections, and (5) finite-amplitude waves and nonlinear duct liners.


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    Titel :

    The acoustics of aircraft engine-duct systems


    Beteiligte:
    Nayfeh, A. H. (Autor:in) / Kaiser, J. E. (Autor:in) / Telionis, D. P. (Autor:in)

    Kongress:

    Aeronautical Meeting ; 1973 ; Montreal, Canada


    Erscheinungsdatum :

    01.10.1973


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Acoustics of Aircraft Engine-Duct Systems

    ALI H. NAYFEH / JOHN E. KAISER / AND DEMETRI P. TELIONIS | AIAA | 1975


    Acoustics of aircraft engine-duct systems

    Nayefeh, A. / Kaiser, J. / Telioni, D. | Tema Archiv | 1975


    The acoustics of aircraft engine-duct systems

    NAYFEH, A. / KAISER, J. / TELIONIS, D. | AIAA | 1973


    Duct Acoustics: Panel Discussion: Duct Acoustics

    Nagamatsu, Henry T. | AIAA | 1976