Operational History
During its short operational history, a total of eight world records were set by the Ka-22, piloted by D.K. Yefremov and V.V. Gromov. On 7 October 1961, with spats over the wheels and a fairing behind the cockpit, a class speed record was set at 356.3 km/h. The spats and fairing were then removed and on 24 November 1961 a payload of 16,485 kg was lifted to 2,557m.
On 28 August 1962, while on an intermediate stop during a ferry flight to Moscow for acceptance testing, Ka-22 0I-01 rolled to the left and crashed inverted, killing the entire crew. The cause was found to be the rotor linkage, and further inspection found that two of the other three Ka-22s suffered from the same defect. Subsequently, in order to improve stability and control, a complex differential autopilot was installed. This sensed attitude and angular accelerations, and fed into the control system.
On 12 August 1964, while involved in Soviet Air Force testing, OI-03 was destroyed. The aircraft entered an uncontrolled turn to the right, and in efforts to correct the Ka-22 pitched into a steep dive. The order was given to abandon the aircraft, and three of the crew survived, but Col S.G. Brovtsev, who was flying, and technician A.F.Rogov, were killed.
After this, the Ka-22 was abandoned, with the Mil Mi-6 having already taken on the heavy helicopter role. Eventually the two surviving machines, 0I-02 and 0I-04, were scrapped. The Ka-22 was only seen once by western observers during the Cold War during an Aviation Day display in Moscow on 9 July 1961.
Read more about this topic: Kamov Ka-22
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