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A thread for helicopters, choppers, copters, helos, thopters, whirlybirds, eggbeaters, gyroplanes, slicks, autogyros, gyrocopters, ornithopters and other non-fixed-wing aerodromes. Our first topic: Attack helicopters. They are undoubtedly awesome, but in a large-scale conventional war, will they be resilient enough to have a presence on the battlefield?
During the 1960s, both the USSR and NATO countries had many programs for the development of VTOL aircraft. Most of these never reach flying status, though a few did fly at least in prototype form. One of these was the Ryan XV-5 Vertifan. http://modelingmadness.com/scott/korean/xv5photoa.jpg Development of the XV-5 began on November 10, 1961, when the US Army issued a contract for the development of an aircraft using the lift-fan propulsion system. Primary contractors were General Electric and Ryan Aeronautics. The lift-fan system was quite different from other VTOL systems of the tim