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X-Plane 10 Bell V-280 Valor (2017). The Bell V-280 Valor is a third-generation tilt-rotor concept being developed by Bell Helicopter and Lockheed Martin for the United States Army's Future Vertical Lift (FVL) program. The aircraft was officially unveiled at the 2013 Army Aviation Association of America's (AAAA) Annual Professional Forum and Exposition, with a projected first flight in 2017. By Billy Bargagliotti.