publication . Article . 2017

RESEARCH OF THE HIGH HARMONICS INDIVIDUAL BLADE CONTROL EFFECT ON VIBRATIONS CAUSED BY THE HELICOPTER MAIN ROTOR THRUST

B. S. Kritsky; R. M. Mirgazov; Le Van Chung;
Open Access Russian
  • Published: 01 Jan 2017 Journal: Naučnyj Vestnik MGTU GA (issn: 2079-0619, eissn: 2542-0119, Copyright policy)
  • Publisher: Moscow State Technical University of Civil Aviation
Abstract
The paper presents numerical results analysis of main rotor vibration due to helicopter main rotor thrust pulsation.The calculation method, the object of research and numerical research results with the aim to reduce the amplitude of the vibrations transmitted to the hub from the helicopters main rotor by the individual blade control in azimuth by the installation angle of blades cyclic changes are set out in the article. The individual blades control law for a five-blade main rotor based on the blade frequencies is made. It allows reducing the vibration from thrust. Research takes into account the main rotor including and excluding the blade flapping motion. Th...
Subjects
free text keywords: helicopter, main rotor, individual blade control, aerodynamic characteristics, vibration, vortex theory, Motor vehicles. Aeronautics. Astronautics, TL1-4050
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