RUDDER SYSTEM
The rudder provides yaw control for the airplane. The rudder is of
conventional aluminum construction consisting of skins, a spar and ribs. The
rudder is attached to the aft spar of the vertical stabilizer at three hinge points,
one attach point being the rudder sector.
Rudder motion is transferred from the pilot and copilot rudder pedals,
connected to each other by a pair of torque tubes. A forward sector is
connected to the rudder pedal torque tubes via two push-pull rods. The
rudder cables are routed from the forward sector under the oorboard via
a series of pulleys to a second rudder sector mounted aft of the vertical
stabilizer. Depressing the left or right rudder pedal deects the rudder in the
corresponding direction.
TRIM SYSTEMS
Aileron, elevator, and rudder trim systems are provided as standard
equipment. Aileron trim is accomplished by an electrically operated aileron
trim tab installed on the left aileron. Dual (split) aileron trim switches are
installed on the upper surface of the control pedestal. When both switches
are depressed simultaneously to the right, the right wing will be trimmed
down; conversely, depressing the trim switches to the left will trim the left
wing down. To provide additional redundancy in preventing a trim runaway,
a 1-second timer is incorporated, which limits continuous operation of the
aileron trim system to 1 second. If more than 1 second’s worth of trim is
needed, cycle the switches off and on as necessary.
Elevator trim is accomplished through two elevator trim tabs by operating the
vertically-mounted elevator trim control wheel on the upper left side of the
control pedestal. Forward rotation of the trim wheel will result in trimming
towards a nose-down attitude. Aft rotation of the trim wheel will result in
trimming the airplane towards a nose high attitude. The airplane is also
equipped with an electric elevator trim system. The electric elevator trim
is controlled by a dual switch installed on the left side of the pilot’s control
yoke. The purpose of the dual switch is to lessen the chances of a trim
runaway condition. Both halves of the switch must be pressed in order to
activate the trim. The KODIAK is equipped with an automatic pitch trim
system to compensate for trim changes with varying ap positions. For more
information regarding this system refer to the description of the Automatic
Trim System in this section.
Rudder trim is accomplished through the nose wheel steering bungee spring
connected to the rudder control system, an electric bungee adjuster assembly,
and a rudder trim switch installed on the aft face of the control pedestal. The
rudder trim switch may be pressed either left or right to achieve the desired
yaw trim position. Pressing the rudder trim switch to the right will trim the
nose to the right; conversely, pressing it to the left will trim the nose to the left.
The KODIAK incorporates design features which reduce the need for rudder
trim during climbs and descents.
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