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Stability Derivatives of Helicopter Rotors
1938At present there are only three published papers dealing with the stability of helicopters, all based on helicopters with rigid rotors. Since all rotors are, in practice, constructed with the blades free to "flap", these analyses are not sufficiently general.
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Advances in Helicopter Rotor Technology
2004Since the beginning of the helicopter development (see “First Helicopters and Rotor Systems”) there was a need to place hinges and bearings as close to the rotor center as possible to guarantee low rotor stiffness and hence good control characteristics at low cabin vibrations.
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Simulation of a Helicopter Rotor
Journal of the American Helicopter Society, 1959W. G. Heffron +3 more
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Failure analysis of the joint bearing of the main rotor of the Robinson R44 helicopter: A case study
Wear, 2021Deqiang Tan, Jiliang Mo
exaly
Tandem Rotor Helicopter Control
2018In this chapter, we study the dynamic analysis and control design for the tandem rotor 3-DOF helicopter platform. We utilized the MATLAB/Simulink software to integrate with the Quarc software for the control system. The system mimics a Chinook helicopter, of which the build consists of a base to which an arm is mounted, two motor-driven propellers ...
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Compound helicopter multi-rotor dynamic radar cross section response analysis
Aerospace Science and Technology, 2020Zeyang Zhou
exaly