Boeing 737 and Airbus A310 noise durations for takeoff, level flight, and curved flight paths are analyzed. Theoretical models are used for the analysis of the effects of flights on curved flight paths in order to calculate maximum sound levels and single event noise levels. The calculated results are confirmed by the simulation. Maximum sound levels within a turn are decreased as compared to those from flights on straight flight path and are increased outside of a turn. The single event noise levels depend on the directional characteristics of the noise source. For curved flights, the direction of maximum sound radiation forms a circular caustic with a center coinciding with the center of the curve. The area within this caustic represents an acoustic shadow zone where maximum sound levels, and single event noise levels, are decreased.


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    Title :

    Calculation of Aircraft Noise in the Vicinity of Civil Airports by a Simulation Procedure


    Contributors:
    U. Isermann (author)

    Publication date :

    1988


    Size :

    100 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English