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Aviation Dictionary

Freewheeling unit

A component of the transmission or power train that automatically disconnects the main rotor from the engine when the engine stops or slows below the equivalent rotor rpm.

Dictionary Term

Freewheeling unit

Definition

  • A component of the transmission or power train that automatically disconnects the main rotor from the engine when the engine stops or slows below the equivalent rotor rpm.

References

  • Helicopter Flying Handbook, Federal Aviation Administration, 2019