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Rotorcraft Flying Menu >Helicopter
Systems > Transmission System
The transmission system transfers power from
the engine to the main rotor, tail rotor, and other acces-sories.
The main components of the transmission sys-tem are the main
rotor transmission, tail rotor drive system, clutch, and freewheeling
unit. Helicopter trans-missions are normally lubricated and
cooled with their own oil supply. A sight gauge is provided
to check the oil level. Some transmissions have chip detectors
located in the sump. These detectors are wired to warn-ing lights
located on the pilot’s instrument panel that illuminate
in the event of an internal problem.
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