Wing Flaps Control System; Airbrakes Control System; Elevator Trim System; Landing Gear - Pipistrel ALPHA Trainer LSA Pilot Operating Handbook

SECTION 7
AIRPLANE DESCRIPTION
The nose wheel is part of the yaw control system and is moved whenever the
pedal is pressed. Cables for nosewheel steering run from the bellcranks be-
hind the seats forward to the nosewheel hinge element, where a anti-shim-
my damper is also connected to.
7.3.5

WING FLAPS CONTROL SYSTEM

There are no separate flap control surfaces in place. Function of flaps is
achieved through symmetric deflections of the flaperons.
The flaps are hand activated through a lever common to both pilots, located
between the seats. The handle is spring locked in 3 positions, corresponding
to flap deflections of 0°, +9°, +19°. The positions are denominated (0), (+1), (+2)
respectively. The thumb-lock button prevents inadverted handle movement.
The backside of the flap handle connects to the main flaperon bell-crank.
7.3.6 AIRBRAKES CONTROL SYSTEM (optional)
Schempp-Hirth Style electric (servo-operated) airbrakes are activated by a
control switch on the instrument panel.
CAUTION:
The system must be operated according the procedures and
limitations explained in the following document SPOH-161-00-41-050_Elec-
tric airbrakes POH supplement.
7.3.7

ELEVATOR TRIM SYSTEM

Spring type elevator trim is activated by a linear servo motor assembly locat-
ed behind the luggage compartment. The motion of the linear servo is con-
trolled through a cockpit switch and an integral position sensor. Trim position
is indicated with discrete steps on a dedicated LED display on the instrument
panel.
7.4

LANDING GEAR

7.4.1

MAIN GEAR

The landing gear is a conventional, fixed tricycle type. The main landing gear
consists of a single composite landing gear strut made of glass fibre. The
strut is composed by two parallel elements producing a semi-redundant
structure and allowing for predictable locations of stress points. The tube-
PAGE
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ALPHA Trainer LSA
Pilot Operating Handbook
POH-162-00-40-001
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