freewheel unit
freewheel unit
Normal operating position: The engine (outer) and rotor (inner) side of the cogs are in equal contact.
Over running position: The engine is turning slower than the rotor. The rotor is free-wheeling.
A device placed in a drivetrain to permit the rotor of a rotorcraft to continue to turn after an engine failure or to turn faster than the driving part of the engine.
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