Yep, but you can still power (when needed) the rotating wing and un-power it when it is not needed (forward travel), that is the "breakthrough" (if it works) of

Yep, but you can still power (when needed) the rotating wing and un-power it when it is not needed (forward travel), that is the "breakthrough" (if it works) of the mentioned GT20: >Helicopter mode for hovering and slow forward flight any time >Gyrocopter mode for fixed wing fast flight and long distance See also gyrocopters: https://www.youtube.com/watch?v=a882megKhVM https://www.youtube.com/watch?v=a882megKhVM Now, in scale for drones, it may also be possible to have an always unpowered rotor (rotating wing) AND 4 (or 5/6[1]) more conventional small rotors for vertical take off/landing and hovering. [1] just thinking aloud, but it would probably be simpler to have four horizontal small rotors, like a "common" drone and an additional one or two vertical to provide trust forward like a traditional airplane or autogyro.