An anti-resonance system for a blade defining an elongated channel therein and affixed to a helicopter rotor includes a moveable mass disposed within the elongated channel of the blade so as to be able to slide along elongated channel. A moving device coupled to the moveable mass is configured to move the moveable mass within the elongated channel. A controller is configured to cause the moving device to move the moveable mass to a selected position within the elongated channel so as to avoid the resonance vibrations of the blade during a rotor speed change. In a method of avoiding resonance of a helicopter blade, a current rotational speed of the blade is determined. A position of the moveable mass so as to avoid a resonance point at a current rotational speed is obtained. The moveable mass is moved to the position.
Anti-Resonance System for Variable Speed Rotors
31.10.2024
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
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