Elevator; Sidestick; Trim - Eclipse 500 System Manual

Section 3. Flight Controls

3.5.3 Elevator

The two elevators on the horizontal stabilizer are mechanically connected. Elevator
deflection is accomplished by fore and aft movement of either sidestick. Control
inputs pass through a series of cables, pushrods and other associated components
to move the elevators.

3.5.4 Sidestick

The ailerons and elevator are controlled with one of two sidesticks located on the left
and right cockpit sidewall. The sidesticks are angled inward to allow for natural wrist
position. The control surfaces are unpowered and move together through a
mechanical interconnect.
Aileron and elevator trim is controlled by a four position switch on the top of each
sidestick. Each sidestick has the additional switches:
A/P DISC .................................... Disconnects the autopilot, yaw damper still engaged.
ALL INTERRUPT ..................................... Disconnects the autopilot, autothrottle, flight
MIC....................................................... Keys the headset or oxygen mask microphone
GEAR MUTE..............................................Silences the landing gear warning horn for
IDENT ........................................................... Activates the transponder IDENT feature
TRIM ....................................................................... Activates Aileron and Elevator trim

3.5.5 Trim

The aileron, elevator, and rudder trim are electrically operated. Aileron and elevator
trim are controlled by switches on each sidestick, while rudder trim is controlled by a
rotary switch on the throttle quadrant.
Inputs from the trim control switches are sent to several trim actuators. Aileron trim
actuators move the aileron centering spring, resetting the neutral position of the
ailerons. A rudder trim actuator moves trim tab on the rudder. Pitch trim is provided
through two pitch trim actuators, one on each elevator. The trim actuators send trim
position back to the ACS, where it is sent to the MFD for continuous display.
A "drum roll" aural tone is heard if manual or autopilot elevator trim movement is
continued for more than two seconds. If uncommanded trim motion is sensed a
TRIM UNCOMMANDED warning message appears, requiring trim to be deactivated
with the ALL INTERRUPT switch on the sidestick.
Trim is also adjustable on the flight control synoptic using the concentric knobs on the
lower portion of the MFD. This feature is designed to provide trim control in the event
of a failure of the normal trim controls, but it is available for selection at all times.
A failure of trim in any axis will cause a PITCH TRIM FAIL, AILERON TRIM FAIL, or
RUDDER TRIM FAIL caution message to appear. Trim for Aileron and Rudder will be
46
director, yaw damper, over/underspeed
protection, and interrupts the stick pusher
and all trim while the ALL INTERRUPT
switch is pressed. Holding this switch
down for two seconds will prompt the Flight
Controls(FLCS) synoptic to appear on the
MFD.
conditions when the warning horn may be
muted.
Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007