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The FanWing experimental aircraft opens up a new field of aerodynamics. Engineers have tried for over seventy-five years to find a means of integral lift and thrust using a horizontal-axis wing rotor. Some of these attempts began to get off the ground but none stayed up there. The privately developed FanWing concept is a new departure: the prototype models are capable of controlled and sustained flight and are now already being developed for commercial use as UAV surveillance craft.
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http://fanwing.com/