Sikorsky X2 Helicopter Tested, Even Cooler than ExpectedSikorsky, makers of the Blackhawk and other sleek helicopters, have successfully tested their X2 Technology Demonstrator, a prototype designed to showcase new propulsion systems that will allow their helicopters to fly at twice the speed of conventional ones. And it looks sci-fi pretty too, even more so from the front: Sikorsky X2 Helicopter Tested, Even Cooler than Expected Sikorsky Chief Test Pilot Kevin Bredenbeck maneuvered the prototype for 30 minutes in a few basic tasks: hover, forward flight and hover turn. The project is coming slowly into final shape but when finished, it will be able to cruise easily at 250 knots while maintaining the same features of traditional helicopters, like low speed handling, hovering, and autorotation. [Sikorsky]