78 XP6102 - Helicopter Manual
Setting Up Revolution Mixing (non-heading lock gyros only)
Set up the helicopter so that it will hover
with the tail rotor trim centered. Establish
the helicopter into a stable hover, then
steadily increase the throttle to initiate a
steady climb. The body of the helicopter
will move in the opposite direction to the
main rotor rotation. Increase the U, or
Up, setting until the helicopter climbs with
no tendency to turn. At a safe altitude,
close the throttle; the helicopter will
descend and the body will turn in the
same direction as the main rotor rotation.
Increase the D, or Down, mix until the
helicopter descends with no tendency to
turn. Throttle stick movements should be
slow, and the initial acceleration and
deceleration swings should be ignored.
The Acceleration Mixing function
is provided to compensate for the
main rotor acceleration (and
deceleration) torque.
