TruTrak Sorcerer RV10 AP100 - Manual (Page 14)

Sorcerer, RV 10, AP 100 Autopilot Installation Manual 12 TruTrak Flight Systems
May 2009 8300-010 Rev B
Yaw Damper First Flight
The Yaw Damper system requires adjustment of the yaw damper parameters. With the autopilot disengaged, level the
aircraft and hand-fly the aircraft in still air. Press TRK to engage the yaw damper (the lower-left part of the display will
indicate YD ON). Then press and hold TRK to enter the setup screen. Cycle through the settings already completed, until YD
LEVELING is shown on the display. Centering is adjustable from -8 to 8 and has enough authority to move the ball
approximately one and one half times the width of the ball in either direction. (Coarse adjustment was made using the
potentiometer in the yaw damper module during the earlier Initial Checkout Procedure.) Adjust the centering so that the ball is
centered. Once the YD LEVELING has been set, press and release the UP control on the VS rocker to advance to the next
setup screen. The next field, YD ACTIVITY, determines how aggressively the yaw damper responds to yaw disturbances.
Yaw damper activity can range from 0 (off) to 12 (extremely aggressive). For this purpose it is best to find light to moderate
turbulence so the effects can be properly observed. Having found suitable conditions, use the knob to gradually increase the
value of YD ACTIVITY in order to obtain an appropriate level of response to yaw disturbances. Too high a value will result in
rapid oscillation, while too low a value will essentially disable the quick response of the yaw damper to turbulence. Within the
acceptable range of operation, there is still room to account for personal preferences. So long as the yaw damper’s YD
ACTIVITY value is not so high as to cause oscillation, the response is simply set according to preference and comfort. Once
the YD ACTIVITY has been set, press and release the encoder to exit the setup mode.
The normal operation of the autopilot will turn the yaw damper on any time the autopilot is engaged, and the yaw damper will
stay on after the autopilot is disengaged. During final approach and the diminishing of the airspeed below the MIN AIRSPD
setting, the yaw damper will automatically disengage. To disengage the yaw damper prior to that point, simply use the TRK
button to toggle the yaw damper off. When the autopilot is in the Off mode, the TRK button acts as a yaw damper on/off
toggle function and the display will indicate YD ON or YD OFF.
GPSS / GPSV APPROACH PICTORIAL