Based on FW-H equations and the CFD method, aeroacoustic characteristics of rotor during collective pitch aperiodic variation are calculated and analyzed. At first, a set of analysis method for aperiodic rotor aeroacoustic characteristics is developed. The aerodynamic and aeroacoustic characteristics of BO-105 rotor in hover and NACA rotor in a ramp increase of collective pitch are calculated, and the employed numerical analysis method is validated through comparisons with experimental data. Then, the aeroacoustic characteristics of the NACA rotor during an oscillating collective pitch is analyzed, and the sound pressure peak at different collective pitch is discussed in detail, and some conclusions are obtained.


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    Title :

    Analysis of Rotor Noise During Ramp Collective Pitch Increase by CFD Method


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Lee, Sangchul (editor) / Han, Cheolheui (editor) / Choi, Jeong-Yeol (editor) / Kim, Seungkeun (editor) / Kim, Jeong Ho (editor) / Chen, Xi (author) / Zhang, Kai (author) / Zhao, Qijun (author) / Wang, Weiqi (author) / Chen, Siyu (author)

    Conference:

    Asia-Pacific International Symposium on Aerospace Technology ; 2021 ; Korea (Republic of) November 15, 2021 - November 17, 2021



    Publication date :

    2022-08-31


    Size :

    14 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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