ATEC 122 ZEPHYR

Technical details

The Wing

has a mixed cantilever construction with a UA-2 laminar-flow . The rectangular wing plane in the root area goes over into the tapered wing ended in a wing-tip. The main spar made of multi-layer reinforced wood is placed at a depth of 30% of the wing. The ailerons and flaps are suspended from the rear auxiliary spar. The leading edge is covered by a composite sandwich as far as the main spar. The rest of wing is covered by PES-fabric. The central framework welded from high-grade CrMo steel tubes is built in the fuselage.

The Fuselage

is a carbon-fibre shell braced with multi-layer wooden bulkheads. The cross-section is elliptic with pure wing fillets and a spacious cabin. The engine which is in the front part of the fuselage is separated by firewall, to which the engine mount and steerable nosewheel are attached.

The Tail Unit

is a T-shaped mixed construction made of glasscomposite. The tapered horizontal tail is composed of fixed stabilizer and rudder. Torsion boxes covers are wooden made in a way similar to wings construction. The tapered vertical tail surface is a monolithic part of the fuselage shell. The rudder suspended from the last fuselage bulkhead is completely made of glasscomposite.

The Landing Gear

is a fixed three-wheeled construction with a steerable nose wheel. The main gear is constructed as a pair of leaf springs of composites. The front leg is made of composites and metal tubes suspended with rubber spring. The main wheels are equipped with hydraulic disc brakes. Electronic main wheels size is 380x100 mm, front wheel size is 300x100 mm. Aerodynamic fairings are installed on all wheels.

The Control

Dual control of all the rudders. The ailerons, flaps and elevator are controlled by control rods and levers, the rudder is controlled by steel wire ropes. All the control attachments are situated within the airframe. The important checking points in the wings are equipped with inspection holes with a perspex covering.

The Engine

of standard option is ROTAX 912 UL 80 HP or ROTAX 912 ULS 100 HP that drives a FITI three or two blade propeller which can be fix, ground adjustable or adjustable in flight. The engine mount is welded of the first-rate-quality CrMo thin-walled steel tubes.

The Fuel System

consists of fuel tank integrated in the fuselage. The piping connection is equipped with a sediment bowl and a drain plug. The fuel supply is assured by two independent circuits and pumps. The fuel pressure is monitored by fuel-pressure gauge.

Instrumentation

consists of basic flight, engine and navigation checking instruments. The static and dynamic pressure is taken from the Pitot tube attached on bottom part of the left wing.

Cabin and canopy

Cabin is equipped with effective air ventilation, optional heating and canopy demisting fans. The hinged perspex canopy can swing upwards and backwards. Electrical blocking system on canopy lock disables to start-up the engine if the canopy is not closed well. Mechanical blocking system prevents from canopy self-opening during the flight. The basic version of canopy is colourless, optionally tinted in different colours. Whole cockpit can be upholstered with various types of fabrics and colours. Seats are adjustable. Pedals are possible to adapt in 3 possitions to the measure of pilot.

Airplanes

• ATEC 321 FAETA
• ATEC 122 ZEPHYR
  • Technical details
• ATEC 212 SOLO
• Towing version
• Design examples
• Used airplanes