Antonov 181

Antonov built product 181 (, изделие 181) was a Soviet experimental aeroplane rolled-out at the end of the 1980s.

History
The Antonov An-181 (or product 181) project was terminated due to the lack of funds following the collapse of the Soviet Union. An interesting feature of the plane is its unusual arc-shaped wing, a so-called Channel wing. The aircraft has two seats next to each other, a tricycle fixed landing gear configuration, a V-tailplane, and high-wing equipped with a channel wing in the area of the propellers. Power from the engine is delivered by means of drive shafts and deflection gearboxes to the two-blade propellers. The aircraft received the registration СССР-190101 and is exhibited in the State Museum of Aviation of Ukraine. Willard Ray Custer had previously built aeroplanes with the same wing concept in the USA.

Specifications
General characteristics
 * Crew: 2 people
 * Length: 7,31 m
 * Wingspan: 7,3 m
 * Height: 2,5 m
 * Wing area: 7 m²
 * Normal take-off weight: 820 kg
 * Maximum take-off weight: 900 kg
 * Engine: AP LOM M-337A, 6 cylinders, 103 kW
 * Propeller diameter: 1.5 m
 * Maximum speed: 225 km / h
 * Practical range: 530 km
 * Service height: 4200 m
 * Starting distance: 70 m
 * Landing distance: 80 m