AEROPRAKT-22LS Pilot Operating Handbook
A22LS-POH-04
30
Fig. 8. Flap extension mechanism
As flaps (
) the flaperons are extended by setting the flap extension lever 1 to the
required positions and thus rotating the flap shafts 5 by the respective angles via link 3 and
levers 4. Locking of the flap setting is achieved by means of the stopper block 2 with three
slots for the locking pin on the flap extension lever. Unlocking is achieved by bending the
flexible flap extension lever to the side and thus taking the locking pin out of the fixing slot.
When the required flap setting is selected the locking pin is aligned with the fixing slot and
the flap extension lever springs back inserting the locking pin into the fixing slot.
Deflection angles of the flaperons (as flaps): 1
st
position
–
9°30´±1°, 2
nd
position
–
18°50´±1°.
8.7.5 Engine controls
Rotax-912iS engine is equipped with an electronic control unit (ECU) for fuel injection into
intake manifolds immediately before the intake valves. The ECU generates signals for fuel
injection and mixture ignition according to the programmed algorithms and data from a
number of sensors, including the throttle valve position sensor. Engine speed is controlled
by moving the throttle valve from closed to fully open position using the throttle lever 1
(Fig. 9) located on the central console in the cockpit. Displacement of the throttle lever
moves the throttle valve arm 7 via the cable 2 inside the Bowden cable sheath 4. The
sheath has an adjustable stop at the throttle valve housing bracket 5 and a fixed stop 3 at
the throttle lever unit. Tension of the cable 2 is ensured by the return spring 6, which pulls
the throttle valve arm to the fully open position.
