TRANSMISSION
The transmission transfers the drive from the engines to the Main Rotor
(MR), the Tail Rotor (TR) and the accessories (pumps, ECS compressors,
etc).
The transmission is composed by:
• the Main Rotor Drive System (see chapter 63-00)
• the Tail Rotor Drive System
This chapter describes the Tail Rotor Drive System.
TAIL ROTOR DRIVE SYSTEM – GENERAL
The Tail Rotor Drive System transmits the rotational drive from the Main
Gear Box to the Tail Rotor. The Tail Rotor Drive System comprises:
• the tail rotor drive shafts;
• the Intermediate Gear Box (IGB);
• the Tail Gear Box (TGB).
The Intermediate Gearbox (IGB) and the Tail Gearbox (TGB) transmit the
drive while changing the drive angle. The gearboxes also reduce the
rotational speed between the input and output drive. Each gearbox has a
self-contained splash lubrication and condition-monitoring oil system.