The influence of increased motive power and airspeed on noise levels within 163 fixed- and rotary-wing aircraft is depicted in 9 noise-exposure envelopes. Increased power and airspeed resulted in increments in cockpit noise in all of these aircraft groups. Changes in acoustic spectra and speech interference are illustrated and described. (Author)


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    Title :

    Airspeed Influence on Noise within Fixed- and Rotary-Wing Aircraft


    Contributors:

    Publication date :

    1970


    Size :

    21 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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