190-01115-01
G3X/G3X Touch Install Manual - GDU 4XX Config and Post Install Checkout
Rev. AC
Page 34-49
Yaw Damper
The GSA 28 autopilot system can be expanded to support a yaw damper. A yaw damper will control the
rudder to try and compensate or remove aircraft body yaw (tail wagging). The yaw damper will also try to
null the lateral acceleration (center the ball) over the long term. The ball centering portion of the yaw
damper is not a replacement for proper rudder trim.
NOTE
Yaw damper functionality requires a GMC 30X mode control panel.
During the flight test phase, the yaw damper is configured and set up after the basic two axis pitch and roll
performance has been properly configured. This is done so the pilot can focus on properly adjusting the
performance of each individual component of the autopilot system without trying to tune them all at once.
NOTE
Ensure basic autopilot functionality is properly adjusted before using the yaw damper.
During the flight test phase of the autopilot checkout, the yaw servo aggressiveness will be adjusted to get
the desired in-fight performance. The “Yaw Damper Servo Gain” setting is used to set the aggressiveness
of the yaw servo. A larger number will cause the yaw servo to more aggressively control the aircraft, and
a smaller number will cause the yaw servo to less aggressively control the aircraft.
