Kamov Ka-22 Vintokryl experimental compound helicopter designed by the Soviets in the late 1950s.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...t_fullsize.jpg
Previously:
Bell V-280 Valor tiltrotor aircraft - photo and video
Sikorsky-Boeing SB-1 Defiant helicopter - GIF
Bell Model 65 tiltjet aircraft - photo
Bell Boeing V-22 Osprey unfolding - GIF and photos
Vertol VZ-2 V/STOL research aircraft - photo
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