When it comes to drones, the University of Virginia knows exactly what it's doing.In a video published to the school website this week, Professor David Sheffler shows off his 3D-printed, hand-launchable, fully autonomous U.A.V. called The Razor. An appropriate name for such a sleek contraption, Sheffler developed the aircraft in partnership with the Mitre Corporation. It was built with completely off-the-shelf hardware, with the brains of the unit an Android Smartphone that acts as the central processor.In the short film, Sheffler talks about the several different ways he and hi...