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Kamov Ka-22 Vintokryl "Hoop" Helicopter

Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter




The Kamov Ka-22, which went by the Nato reporting name "Hoop", was an experimental heavy-lift helicopter developed by the Soviet union in the 50's and '60s. The aircraft's nickname was the Vintokryl, or "screw wing". It was designed to offer the same vertical take-off and landing capabilitiesas a helicopter combined with the superior speed and range of a fixed-wing aircraft.

The Kamov Ka-22 helicopter was designed by Valdimir Barshevsky. He drew up plans in the early 1950s for an unusual helicopter/airplane combination, and by 1954 the Soviet military requested three prototypes of the kA-22. Unfortunatelydue to lengthy delays in the project, by 1956 the request had been reduced to just a single aircraft, and this didn't take to the air until 1959.

During the first test flights it became obvious the aircraft suffered from serious control issues, leading to yet another delay in production. However by 1960, the military agreed to a further three prototypes.

Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter

The Kamov kA-22was powered by two Soloviev D-25K engines housed in nacelles at each wingtip. These powered both the large propellers above, and the smaller tractor propellers used for horizontal flight. In helicopter mode the propeller drive was disconnected and the flaps were lowered to 90 degrees. In fixed-wing mode, the lifting rotors were free to windmill, and the aircraft was controlled by the ailerons and tail surfaces.

Due to its unique abilities, the kA-22 was able to set 8 world records for altitude and speed in its class.

The Kamov kA-22 could carry a large payload within its fuselage, and loading and unloading was facilitated by the large front door which hinged from the right hand side and consisted of the entire nose of the aircraft - excluding the cockpit above. It could carry 100 passengers, and the maximum load carried by the helicopter in testing was 32,000 lbs (16,485 kgs). It had a top speed of 233 mph.

Sadly, of the four aircraft built, two were destroyed in fatal crashes. The first occurredin 1962, when kA-2201-01 crashed en-route to Moscow for testing. The entire crew were killed after the aircraft rolled to the left and hit the ground inverted. The cause of the crash was found to be the pitch control linkage on the starboard rotor. Inspection of the other prototypes showed that two of the other three aircraft suffered from similar problems. A complex autopilot system was subsequently fitted which fed into the control system based on input from sensors monitoring the attitude and angular acceleration of the aircraft.

The second crash happened almost exactly two years later in August 1964, when Ka-22 01-03 was destroyed after the aircraft entered an uncommanded right turn which developed into a steep dive. The call was given to bail out, and three of the crew survived. However the pilot, Col S.G. Brovtsev, and technician A.F. Rogov were killed in the crash.

After this second incident, the Kamov kA-22project was canceled.The Soviet military had already chosen the more conventional Mil Mi-6 as their heavy-lift helicopter. The remaining two prototypes, 01-02 and 01-04 were both scrapped.




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Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter



Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter
Kamov Ka-22 Vintokry 'Hoop' Soviet Helicopter

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