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    Numerical Simulation of Aerodynamic Interaction Effects in Coaxial Compound Helicopters

    Maosheng Wang, Yanyang Wang, Yihua Cao*, Qiang Zhang

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.5, pp. 1301-1315, 2023, DOI:10.32604/fdmp.2023.023435

    Abstract The so-called coaxial compound helicopter features two rigid coaxial rotors, and possesses high-speed capabilities. Nevertheless, the small separation of the coaxial rotors causes severe aerodynamic interactions, which require careful analysis. In the present work, the aerodynamic interaction between the various helicopter components is investigated by means of a numerical method considering both hover and forward flight conditions. While a sliding mesh method is used to deal with the rotating coaxial rotors, the Reynolds-Averaged Navier-Stokes (RANS) equations are solved for the flow field. The Caradonna & Tung (CT) rotor and Harrington-2 coaxial rotor are considered to validate the numerical method. The… More >

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