​This Wacky Sci-Fi Plane-Helicopter Hybrid Was Totally Almost a Thing

By the end of WWII, the basics of helicopter technology as we know it had generally been worked out—and we'd begun to reach the aircraft's physical limitations. For the US Air Force, the solution to the issue running up against these performance walls was simple: Combine the best parts of a helicopter and jet… » 11/18/13 11:40am 11/18/13 11:40am