Papers

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https://dspace-erf.nlr.nl/handle/20.500.11881/99

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Browsing Papers by Author "Abalakin, I."
  • Item
    Numerical investigation of aerodynamics and acoustics of rigid main rotor in forward flight
    ( 2019) Abalakin, I. ; Bobkov, V. ; Kozubskaya, T. ; Kritsky, B. ; Mirgazov, R. ; Vershkov, V.
    The paper is devoted to the numerical simulation of the flow near the rigid helicopter rotor in the forward flight mode using the Reynolds-averaged Navier-Stokes equations in the rotating non-inertial reference frame. The numerical method is based on the vertex-centered EBR scheme for unstructured hybrid meshes. The computations are performed using the in-house code NOISEtte and the software package ANSYS CFX. The numerically obtained aerodynamic characteristics of the rotor are comparatively analysed against the results of full-scale experiments.
  • Item
    Numerical investigation of aerodynamics of a helicopter articulated main rotor in hovering and horizontal flight
    ( 2021) Abalakin, I. ; Bobkov, V. ; Kozubskaya, T. ; Tsvetkova, V. ; Vershkov, V. ; Kritsky, B. ; Mirgazov, R.
    The paper is devoted to the numerical study of aerodynamic characteristics of a four-bladed articulated main rotor of a helicopter with cyclic pitch control and flapping motions of the blades and to the comparative analysis of the results against the similar case of rigid rotor with the fixed pitch angle and precone angle. The numerical investigation is carried out for the following working conditions: hover mode without cyclic control; forward flight without cyclic control; forward flight with cyclic control. The computations are performed on unstructured hybrid meshes using the in-house CFD code NOISEtte.