Field test of muffler designed with aid of this method was conducted on helicopter with known exhaust-noise problem. When exhaust noises were compared for hover-flight conditions, muffler system was found to reduce exhaust noise by approximately 11 db. No significant degradation in engine performance was observed.


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    Titel :

    Improved method for design of expansion-chamber mufflers with application to operational helicopter


    Beteiligte:
    Parrott, T. L. (Autor:in)

    Erscheinungsdatum :

    01.03.1974


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :