AEROPRAKT-22LS Pilot Operating Handbook
A22LS-POH-04
33
8.7.4 Control system of flaperons (drooping ailerons)
The airplane is equipped with flaperons (drooping ailerons), which serve as both ailerons
and flaps. The flaperon control system ensures independent function of flaperons as ailerons
and flaps using a differential mechanism.
Fig. 7. Control system of flaperons (drooping ailerons)
The control force in roll (
) applied by the pilot to the yoke 1 is passed via the lever 2 to
the pushrod 3 and then to the central control shaft 5. The yokes are interconnected with the
pushrod 4. Then from the bellcrank 6 attached to the shaft it is passed via the pushrods 7 to
the flaperon control shafts 8. The shafts are attached via a Cardan joint 9 to the bracket at
the root end rib of the flaperon 10 at one end and to the trunnion on the levers 11 of the flap
control mechanism at the other. Stops 12 limit the rotation angle of bellcrank 6 on the central
control shaft and, therefore, angles of yoke rotation and aileron deflection.
Deflection angles of the flaperons (as ailerons): up
– 19±1°, down – 13±1°.
