Autopilot And Yaw Damper Operation - Garmin G1000 Pilot's Manual

8.4 AUTOPILOT AND YAW
DAMPER OPERATION
The Beechcraft 58/G58' s Autopilot and Yaw Damper
operate the flight control surface servos to provide auto-
matic flight control.
The Autopilot controls the aircraft pitch and roll at-
titudes following commands received from the Flight Di-
rector. Pitch Autotrim provides trim commands to the
pitch trim servo to relieve any sustained effort required by
the pitch servo.
The Yaw Damper reduces Dutch roll tendencies and
coordinates turns. It can operate independently of the
Autopilot and may be used during normal hand-flight
maneuvers. Yaw rate commands are limited by the Yaw
Damper.
FLIGHT CONTROL
Pitch and roll commands provided to the GSA 81 ser-
vos are based on the active Flight Director modes. Yaw
damping is provided by a GSA 81 servo. Servo motor
control limits the maximum servo speed and torque.
Pitch Axis and Trim
The Autopilot pitch axis uses pitch rate to stabilize the
aircraft pitch attitude during aircraft upsets and Flight Di-
rector maneuvers. Flight Director pitch commands are
rate- and attitude-limited, combined with pitch damper
control, and sent to the pitch servo motor.
The pitch servo measures the output effort (torque)
and provides this signal to the pitch trim servo. The pitch
trim servo commands the motor to reduce the average
pitch servo effort.
190-00629-00 Rev. B
may be used to provide Manual Electric Pitch Trim. This
allows the aircraft to be trimmed using a control wheel
switch rather than the trim wheel. Trim speeds are sched-
uled with airspeed to provide more consistent response.
Roll Axis
aircraft roll attitude during upsets or Flight Director ma-
neuvers. Flight Director roll commands are rate- and at-
titude-limited, combined with roll damper control, and
sent to the roll servo motor.
Yaw Axis
dampen the aircraft' s natural Dutch roll response. It also
uses lateral acceleration to coordinate turns. Yaw Damper
operation is independent of Autopilot engagement.
Emergency Control Override
clutches set to certain values. This allows the servos to be
overridden in case of an emergency.
Garmin G1000 Pilot's Guide for Beechcraft 58/G58
When the Autopilot is not engaged, the pitch trim servo
The Autopilot roll axis uses roll rate to stabilize the
The Yaw Damper uses yaw rate and roll attitude to
NOTE: Refer to the POH for specific instructions
regarding emergency procedures.
The GSM 85 servo mounts are equipped with slip-
AUTOMATIC FLIGHT
CONTROL SYSTEM
8-17