AIRCRAFT FLIGHT
MANUAL
BRISTELL B23
Document No.: ADXC-73-001-AFM
Non-approved page
Revision: A2
7-5
Date of Issue: 15.04.2021
7.3
Flight controls
Control System consists of an aluminium pushrods system (machined
bell cranks) with a steel torque tube for aileron and elevator.
Rudder Control System consists of steel cable and pulley system. The
rudder control is also used for nose gear steering in a closed loop
system.
7.3.1
Aileron control and aileron trim
Ailerons are actuated with two
control sticks located between the pilot’s
and co-
pilot’s legs. Movement of the control sticks is synchronized via
pushrod lead between the inside of the elevator control torque tube.
Lateral control stops are located on the torque tube in the cockpit.
The ailerons have differential actuation, to minimize the unwanted
secondary yawing caused by aileron deflection.
The aileron trim tab is installed on the left aileron. It is controlled by the
actuator located inside of the left aileron. Control switches are integrated
into both stick grips.
A LED position indicator is installed on the instrument panel in the pilot’s
view field (independent from EFIS). The aileron trim position light
intensity can be dimmed by a fixed value using the day/night switch.
7.3.2
Elevator control and elevator trim tab control
The elevator is controlled by moving the control sticks forward and aft.
A system of transmission levers and pushrods transfers the movement of
control sticks to the elevator.
An electric actuator is installed in the horizontal stabilizer. It is used to
control the elevator trim tab. Control switches are integrated in both stick
grips.
A LED position indicator is installed on the instrument panel in the pilot’s
view field (independent from EFIS). The elevator trim position light
intensity can be dimmed by a fixed value using the day/night switch.
The elevator trim tab serves as anti-servo-tab for the elevator, it
co-moved with the elevator to enhance control force.
7.3.3
Rudder control
The rudder is controlled by means of foot control pedals. Pedal
deflections are transferred to the rudder by a cable-pulley system.
Foot control pedals can be set individually to two positions (large and
small pilot) by means of a lock-pin mechanism on the side wall of