We’re not entirely sure what to call this one. It’s got the usual trappings of a drone, but with only a single rotor it clearly can’t be called by any of the standard multicopter names.

Sikorsky reported successful flight tests for its 115-pound, battery-powered twin prop-rotor unmanned aircraft.

Lockheed Martin subsidiary Sikorsky has successfully flown an electric-powered, 115-lb (52-kg) autonomous drone that uses what it calls a "rotor blown wing" to fly like both a helicopter and an ...