The Yakovlev VVP-6 was a Soviet experimental multi-rotor surface-to-air missile platform from the 1960s. It never progressed beyond the model stage.
Previously:
Piasecki PA-97 Helistat hybrid aircraft - photo
Kamov Ka-22 compound helicopter - photo
Lockheed XH-51 experimental helicopter - GIF
American Helicopter XH-26 tip jet helicopter - photo and video
Firestone XR-9B experimental helicopter - photos
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