A new model for estimating the noise radiation during maneuvering flight is developed in this paper. The model applies the Quasi-Static Acoustic Mapping (Q-SAM) method to a database of acoustic spheres generated using the Fundamental Rotorcraft Acoustics Modeling from Experiments (FRAME) technique. A method is developed to generate a realistic flight trajectory from a limited set of waypoints and is used to calculate the quasi-static operating condition and corresponding acoustic sphere for the vehicle throughout the maneuver. By using a previously computed database of acoustic spheres, the acoustic impact of proposed helicopter operations can be rapidly predicted for use in mission-planning. The resulting FRAME-QS model is applied to near-horizon noise measurements collected for the Bell 430 helicopter undergoing transient pitch up and roll maneuvers, with good agreement between the measured data and the FRAME-QS model.


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    Title :

    A Maneuvering Flight Noise Model for Helicopter Mission Planning


    Contributors:

    Conference:

    American Helicopter Society Annual Forum ; 2015 ; Virginia Beach, VA, United States


    Publication date :

    2015-05-05


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


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