Flight and Operations Manual of ATEC 321 Faeta ultralight aircraft with Rotax 912 iS Sport
ATEC v.o.s. Libice nad Cidlinou, Czech Republic Page 39 of 56
7.1. Wing
The cantilever tapered backswept wing of an angle of 5,5° with SM 701 airfoil along the whole span is a
reinforced shell of carbon composite sandwich with carbon composite coating. The wing spar is made of
laminated hard beech wood saturated with synthetic resin and is situated in 30% of the wing depth. The
ailerons are hinged on the rear spar and slotted flaps are hinged on composite hinges with turning point
under the outline profile. Ailerons and flaps are of all-composite structure. Wing root ribs are made of
carbon sandwich, other ribs are made of plastic foam. The main spar is welded of high quality CrMo
steel tubes.
7.2. Fuselage
The fuselage is all carbon composite shell braced with carbon sandwich bulkheads, NOMEX honeycomb
and hardened foam. The fuselage cross section has elliptic shape with aerodynamic wing base and
spacious cockpit covered by the perspex canopy. The luggage compartment with two small side-
windows behind the seats are the part of the cockpit. The engine is in the front part of the fuselage. It is
separated from the cockpit by the firewall to which the engine mount and the steerable nose wheel are
attached.
7.3. Tailplane
The T-shaped all-composite tailplane construction consists of tapered vertical and horizontal tailplanes.
The horizontal tailplane consists of fix stabilizer and elevator. The elevator trim can be mechanical or
electrical (optional). The tail fin is integral part of the fuselage. The vertical tailplane is of trapezoidal
shape. The vertical rudder is suspended to the last fuselage bulkhead.
7.4. Landing Gear
The landing gear is a fixed tricycle undercarriage with a steerable nose wheel. The main gear is designed
as a pair of composite leaf springs. The integral nose leg with aerodynamic fairing is made of composites
and metal tube. The leg is fitted with shock absorbing rubber springs. Main wheels size is 350x120 mm,
nose wheel size is 300x100 mm. The main wheels are fitted with hydraulic disc brakes. All wheels are
covered by wheel spats.
7.5. Steering
Each control surface has dual steering. The ailerons, flaps and elevator are controlled by control rods
and levers, the rudder is controlled by stainless steel wire ropes. Lift flaps are optionally equipped with
electrical control. All controls attachments are designed the way not to disturb the pure airframe
contour. Important checking points in wings are equipped with inspection holes with perspex covers.
The control can be trimmed longitudinally in flight. The cockpit can be optionally equipped with the
second control stick (for the crew).
7.6. Propulsion
The propulsion unit is ROTAX 912 iS Sport engine and three or two blade FITI ECO COMPETITION
propeller, which can be fix, adjustable on ground or in flight.
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