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THIS IS AN UNCONTROLLED DOCUMENT.
THIS ELECTRONIC DOCUMENT MAY HAVE BEEN SUPERCEDED.
THE MOST CURRENT DOCUMENT INFORMATION IS AVAILABLE
FROM YOUR BELL HELICOPTER TEXTRON REPRESENTATIVE.
PRODUCT DATA JANUARY 2003
NINETY DEGREE GEARBOX
The tail rotor gearbox is mounted at the
end of the tail boom and provides a
reduction of the driveshaft speed and a 90°
change of direction. The gearbox supports
the tail rotor and its' pitch controls. It
contains an integral splash-type lubrication
system. The gearbox is also equipped with
a vented oil filler cap, an oil level sight
glass, and a drain plug / chip detector
("FUZZ" burning) for ease of maintenance
and inspection.
TAIL ROTOR
The tail rotor counteracts the torque of the main rotor, and functions to maintain or
change the helicopters' heading by means of the control linkage from the pilot's directional
control pedals. The tail rotor consists of a pair of interchangeable
stainless steel blades,
a tail rotor hub, and a pitch change mechanism. The simple two bladed semi-rigid rotor
features integral balancing provisions to allow easy tracking/balancing for minimized
vibration at operating RPM.
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