Differences in mechanisms of noise generation and transmission between helicopter and fixed wing aircraft are examined; propeller noise consisting of rotational and vortex noise; basic procedures of acoustical treatments; external noise and factors influencing aural detectability of aircraft; techniques in controlling noise and development of Perceived Noise Level (PNdb); Port of New York Authority established 112 PNdb as maximum permissible outdoor level near flight path; helicopter and jet transport noise spectra for equal perceived noise levels are compared and it is predicted that helicopter noise levels will produce no real public disturbance; operational penalties.


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    Titel :

    Operational aspects of helicopter noise


    Weitere Titelangaben:

    SAE -- Paper


    Beteiligte:
    Sternfeld, H. (Autor:in) / Spencer, R.H. (Autor:in)

    Kongress:

    SAE Meeting ; 1964 Noise



    Erscheinungsdatum :

    1964


    Format / Umfang :

    7 pages


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Operational Aspects of Helicopter Noise

    Sternfeld, Harry / Spencer, Robert H. | SAE Technical Papers | 1964


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    Helicopter Flight in Icing Conditions - Operational Aspects

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    Technical and Operational Aspects of Helicopter Civil Service

    Schneider, R. / Deutsche Gesellschaft fur Luft und Raumfahrt | British Library Conference Proceedings | 1997