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Resonant mass absorber for helicopter rotor

LDO-H3108

To dampen the vibrations generated by the rotor and transmitted to the hub and then to the helicopter
 

Like all resonant mass absorbers, the effectiveness of the device is high at the resonance frequency, while it is very low or negligible outside a very narrow band centered on this frequency. This device has minimal damping to maximize its effectiveness at the tuning frequency.

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