A new model for noise prediction of hybrid electric aircraft is presented. This model is demonstrated on the parallel hybrid of An-26 aircraft. The power plant of An-26 modification consists of gas turbine engine and electric engine driving propeller through a common gearbox. According to this model, the flight path is obtained using numerical solution of systems of differential equations, which describes aircraft flight dynamics on all flight segments. The simulation of noise is based on trajectory calculation using height-speed characteristics of hybrid power plant. We make each segment of flight path to comply with the limitations imposed by flight operation manual of An-26 through optimization of hybrid electric aircraft performances. Genetic algorithm was used to find global optimum for parameters of the angle of attack function. New criteria for optimization were developed enabling flight with monotonously increasing/decreasing speed and height, level flight, making trajectory angle equal to zero at the end of segment, and reaching specific airspeed or height at the end of the segments. Final turboprop hybrid electric aircraft performances include total thrust and true airspeed, which are used for the evaluation of contours of maximum A-weighted sound pressure level, effective perceived noise levels, and sound exposure levels during takeoff and landing of aircraft.


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    Title :

    Modeling the Noise Characteristics of a Regional Turboprop Hybrid Electric Aircraft


    Additional title:

    Sustainable aviat.



    Conference:

    International Symposium on Electric Aircraft and Autonomous Systems ; 2023 ; Warsaw, Poland July 05, 2023 - July 07, 2023
    International Symposium on Unmanned Systems and The Defense Industry ; 2023
    June 07, 2023 - June 09, 2023



    Publication date :

    2024-11-23


    Size :

    5 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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    Free access

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