The Aerostatoplan(Vertoplan)was a STOL aircraft with a tilt wing, at the ends of each wing were to be three leaf rotors.
The Ex-Russian designer Nikolai I Žučenko submitted this proposal in 1937 to the Yugoslav Air Force, which decided to support it financially and the aircraft was built at the Ikarus Factory.
Subsequently, a single-seat prototype of a full-wood structure with a canvas cover was built, which had a high-ranked three-point chassis.
The trapezoidal wing with an approximate span of 6.7 meters could be rotated on a hollow beam, through which also propeller-propellers were led.
However, this lacked cyclic control, so the machine could not be directed in all three axis.
When tested, the aircraft could not leave the ground, the underpowered 37Kw Walter Mikron engine was blamed.
Initial tests began in 1939, but World War II prevented further development.
The Aeronautical Museum Belgrade
Surcin, Belgrade, Serbia.
Aeronautical Museum Belgrade