The invention discloses a bifilar-pendulum vibration absorber of a helicopter rotor, and relates to the technical field of helicopters. The bifilar-pendulum vibration absorber of the helicopter rotor is used for being connected with a rotor hub, and comprises a central support, counterweight blocks and connecting components, wherein the central support is provided with a center part and supporting arms; the center part is fixedly connected with the rotor hub; the supporting arms and the center part are integrally formed, and first two-curve holes are formed in each supporting arm; second two-curve holes are formed in each counterweight block; the central support is connected with the counterweight blocks through the connecting components; each counterweight block can swing around the corresponding connecting components along the corresponding first two-curve holes or the corresponding second two-curve holes. The bifilar-pendulum vibration absorber disclosed by the invention has the beneficial effects that the inherent frequency of the bifilar-pendulum vibration absorber is in direct proportion to the rotating speed of the rotor; when the rotating speed of the rotor changes, the set maximum frequency ratio can be kept, so that the vibration absorber can be adjusted along with the rotating speed of the rotor, and is valid to different rotating speeds of the rotor; the vibration absorber is simple in structure, and has a good vibration absorbing effect.
Bifilar-pendulum vibration absorber of helicopter rotor
2016-01-27
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
The Main Rotor Bifilar Absorber and Its Effect on Helicopter Reliability/Maintainability
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