Technical description

NA-542 is a light five-seated twin-engine helicopter. Its tail rotor has been substituted by a proprietary patented system for complete compensation of momentum (COCOMO).

Fuselage is manufactured from carbon fibres, nomex & aluminium honeycombs and other composite materials. The cockpit, power units and fuel tank are based on a primary composite double curvature monocoque sandwich structure, which is manufactured using high-temperature vacuume production technology just like for other primary and secondary composite parts.

Cockpit configuration is equipped with analogue avionics for VFR flights and has dual flight control systems. IFR and "glass cockpit" versions will be developed at a later stage.

Standard HEMS stretcher fits into interior for HEMS missions.

The power unit consists of two liquid cooled turbocharged rotary piston engines(Wankel type) G-230TS-B1B - output 2x230 hp. A digital/analogue FADEC computer continuously monitors and controls the unit.

Four fully-composite rotorblades are fitted in three axes with elastomeric suspensions and have a "safe when damaged"-design.

Helicopter's elastomeric rotorhead is designed for maintenance-free service and its conception is similar to the Starflex system.

Helicopter's tail section is equally fully-composite including the stabilisation and compensation elements.

The helicopter is equipped with a fixed-skids landing gear.