A computer program to predict the effective perceived noise level (EPNL), the tone corrected perceived noise level (PNLT), and the A-weighted sound level (dBA) radiated by a V/STOL vehicle as it flies along a prescribed takeoff, landing, or cruise flight path is described in detail and a complete users guide for the program is presented. The procedures used to predict the noise radiated by helicopter rotors, propellers, turboshaft engines, lift and cruise fans, and jets are described in detail. Helicopter rotor noise and jet noise are theoretically predicted with some empirical modifications while propeller, fan, and turboshaft engine noise is calculated with primarily empirical procedures. The program is designed to be easy to use; thus it shoud be useful in V/STOL-port planning studies.


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    Title :

    Prediction of V/STOL Noise for Application to Community Noise Exposure


    Contributors:
    C. L. Munch (author)

    Publication date :

    1973


    Size :

    278 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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