iX12 Manual

TAIL CURVE
Helicopters without a heading hold gyro will experience inconsistent tail
performance. When throttle is applied, the tail will swing one way and then
another with reduced power. Tail curves are used to compensate for torque
at various points in the throttle range. Tail curves are commonly tied to flight
modes and tuned to match each mode after the pitch and throttle curves
are set. The tail curve mix is not required with most modern helicopter flight
control systems.
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