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1 year, 11 months ago
I saw these things swinging in a video of a rotor from
the blade point of view. I don't know what are they for but I am quite curious. And why some helicopters have it and some don't?
Source: Helicopter Main Rotor Blade In Flight Slow Motion -- YouTube
Jun 18, 2021 at 1:54
The devices are pendulum (or pendular) absorbers:
Vibration suppression of helicopter blades by pendulum absorbers - Imao Nagasaka.
The pendulum absorbers are used for suppressing the vibrations in helicopter blades. Compared to fixed weight attached to the blade, the pendulum configuration allows for shifting of the damping range depending on rotor angular speed.
609 4 4 silver badges 9 9 bronze badges
Jun 18, 2021 at 9:06
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