One of the most unusual experimental flight vehicles appearing at NASA's Ames-Dryden Flight Research Facility in the 1980s was the Rotor Systems Research Aircraft (RSRA) X-Wing aircraft, seen here on the ramp.
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One of the most unusual experimental flight vehicles appearing at NASA’s Ames-Dryden Flight Research Facility in the 1980s was the Rotor Systems Research Aircraft (RSRA) X-Wing aircraft, seen here on the ramp. The craft was developed originally and then modified by Sikorsky Aircraft for a joint NASA-Defense Advanced Research Projects Agency (DARPA) program and was rolled out 19 August 1986. Taxi tests and initial low-altitude flight tests without the main rotor attached were carried out at Dryden before the program was terminated in 1988.1986NASA Photo› X-Wing Project Description