2 AIRCRAFT DESCRIPTION
The aircraft is a two-seat, high-winged monoplane with a cantilever wing, T-shaped tail and a
tandem two-wheel undercarriage. Its composite structure is made in negative moulds.
2.1 Wing
The wing consists of a sandwich structure equipped with ailerons and an air brake on the
upper surface. There are no ribs in the wing. The strength of the wing system is formed by
the main spar, the aileron spar and the root rib. The spar has a C-D shape including flanges
made of carbon composite. The complete wing profile of the sandwich structure forms the
torsion box. The wings are interconnected by fittings and two horizontal pins. The wing-
fuselage connection is made by means of pins and fittings placed in the fuselage and the
wing root rib. The composite ailerons are attached via four hinges with the axis of rotation on
the upper side. Air brakes on the upper side of the wing are made of aluminium and are
retracted into pits.
2.2 Fuselage
The fuselage is a shell structure made in a negative mould including the fin.
2.3 Tail
The tail is a T-shaped sandwich structure.
2.4 CONTROLS
Pitch, roll, air brake and trim are controlled via a lever design, with a push-pull rod system.
The control backstops are placed on the control stick. Yaw control includes adjustable pedals
and is transmitted by cables. The aircraft can be trimmed by a torsional member in the
elevator drive that is controlled by a lever in the left of the front cockpit.
2.5 UNDERCARRIAGE
The main landing gear with main wheel (350 x 100 mm) is housed in a swinging spring-
mounted fork. The front wheel is fixed. A lever located on the left hand side of the cockpit
floor controls the brake. The tail landing gear is provided with a turnable tail wheel (80 x 30
mm).
2.6 PROPULSION GROUP
The aircraft is driven by an auxiliary engine ROTAX 503UL-D.C.D.I cooled by the air stream.
with a1:2 type B reducer. The fixed wooden propeller has a diameter of 1200 mm and a pitch
TST-14 M – Aircraft Manual
rev.0 issued 2006-11-29 – page 7 of 40
