In order to study the dynamic loads of a helicopter rotor during circling flight, the aerodynamic and structural dynamic models of the rotor are developed. In terms of aerodynamics, the free wake method based on relaxation iteration is adopted, wherein the wake model is distorted for circulating flight. With respect to structural dynamics, the Rayleigh–Ritz method is employed in mode superposition manner. The dynamic loads and properties of the rotor blade are calculated and analyzed. The accuracies of the modeling methods are verified by a numerical analysis and experimental comparison. Thereafter the influences of circling radii are emphasized. The distortion of wake changes the distribution of induced velocity and the aerodynamic load increases with a decrease of the circling radius. However, the dynamic loads share the same variation trend as the circulating radius.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dynamical Analysis of Rotor Loads in Helicopter Circling Flight Condition


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Lee, Sangchul (editor) / Han, Cheolheui (editor) / Choi, Jeong-Yeol (editor) / Kim, Seungkeun (editor) / Kim, Jeong Ho (editor) / Zhou, Xu (author) / Zhang, Xiayang (author) / Wang, Bo (author) / Zhao, Qijun (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 :

    13 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Control in Circling Flight

    Norton, F H / Allen, E T | NTRS | 1923





    Minimum-Time Circling Flight of a Triarm Coaxial Rotor UAV

    Harada, M. / Bollino, K. / American Institute of Aeronautics and Astronautics; Conferderation of European Aerospace Societies | British Library Conference Proceedings | 2011