Kamov Ka-22
The Kamov Ka -22 Wintokryl (Russian Камов Ка -22 Винтокрыл, Russian for " Schraubflügel ", NATO reporting name: Hoop, tires ) was a very large transport airplane wrench, the Kamov, inspired by the Fairey Rotodyne, on behalf of the Soviet Air Force constructed.
The unusual drive concept was that at takeoff and landing, the rotors were driven for forward flight, the thrust of the propeller was then used. The two turbines driven via adjustable couplings on both the two propellers and the mounted above the rotors in tandem configuration. As with all air screwdrivers, the advantages of this design are only used in combination with wings for carrying and then allow higher flight performance as a helicopter. Thus, the Ka -22 reached a significantly greater speed than comparable pure rotorcraft. You set eight records for rotorcraft - in the areas of payload / altitude and speed ( 356 km / h ) - which are still unbroken.
The Ka -22 was seen only once on an aviation exhibition in Moscow in 1961. She had the body of the Antonov An-10, which gave her a theoretical capacity from 80 to 100 people. The payload was more than 16 tons.
After two accidents, the highly complex development program was discontinued in 1964, and there was no mass production in the planned plant # 84 in Tashkent. The company Kamov, which is otherwise known by coaxial helicopter was still working, was applied to other flight screwdrivers: The even more Ka -35 should use jet engines for propulsion, the V-100 was a design from the 1990s for a quick fight - flight screwdriver, also with tandem rotors, but a pusher propeller. However, both designs the prototype stage have not been reached.