HELI 84
The Revolution Mixing Function mixes tail rotor input with the
Throttle/Collective Function to counteract torque from the main
rotor blades. When set-up correctly, the helicopter should climb
and descend without a tendency to yaw in either direction.
Because torque reaction varies with different power settings, it is
necessary to vary the tail rotor pitch at the same time. The
XP8103 offers two (2) separate revolution mixing programs with
independent up and down mixing for each — one for flight
mode position N and the other for Stunt 1 and Stunt 2 positions.
The U, or Up, mixing adjusts the tail rotor compensation for the
mid to high throttle/stick setting, and the D, or Down, mixing
adjusts the tail rotor compensation for the mid to low
throttle/stick setting.
In the Function Mode, use the UP and DN keys to select
Revolution Mixing and access by pressing the UP and DN keys
simultaneously.
Setting Up Revolution Mixing
First, adjust the helicopter so that it will hover in a neutral
position with the tail rotor trim at center. Next, establish the
helicopter into a stable hover; then steadily increase the throttle
to initiate a stable 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 will climb with no tendency to
turn or rotate. At a safe altitude, close the throttle and the
helicopter will descend with the body turning in the same
direction as the main rotor. Increase the D, or Down, mix until
the helicopter descends with no tendency to turn or rotate.
When attempting this procedure, throttle stick movements should
be slow, and the initial acceleration and deceleration swings
should be overlooked.
4.11 Revolution/Acceleration Mixing (Function Mode)
4.10 Inverted Switch, (Function Mode) cont.
