AEROPRAKT-22LS Pilot Operating Handbook
A22LS-POH-04
34
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
The engine controls are accessible from both right and left side pilot seat. Engine RPM is
controlled using a single throttle lever located on the central console. Two control cables
connect the throttle lever to the left and right carburetors on the engine.
The fuel mixture control (for engine starting) is achieved using the choke lever also located
on the central console near the throttle lever. The choke lever is connected to the carburetors
with cables as well.
Carburetor heating control knob is located on the instrument panel. It controls position of a
shutter in the air intake box. When the shutter is open, the colder outside air is coming
through the air scoop into the air intake box and then to the carburetors. When the shutter
is closed, the carburetors are supplied with the hotter air from the engine compartment and
thus the carburetor heating is ensured.
8.7.6 Brake control system
The main wheel brakes (
) are actuated hydraulically using the brake lever 2 (installed
next to the throttle lever 3) controlling the pressure supplied from the master cylinder 1 to
the slave cylinders 4 in the wheels.
