blade

Helicopters won't transform into rampaging Decepticons anytime soon, but near-future rotor blades could actively change shape on the fly.

Military lab DARPA has put out a call for rotor blades that could boost payloads by 30 percent and range by 40 percent, as well as reduce sound by 50 percent and vibration by 90 percent compared to the usual fixed rotor blades.

Click here for a photo gallery of our favorite bombshell fembots from television and film.

Fembots were a pop-culture staple long before Austin Powers battled them-witness the popularity of The Bionic Woman, The Stepford Wives and Blade Runner. But what is it about curvaceous cyborgs that stirs the imagination?

For years, the U.S. military has wanted a plane that could loiter just outside enemy territory for more than a dozen hours and, on command, hurtle toward a target faster than the speed of sound. And then level it. But aircraft that excel at subsonic flight are inefficient at Mach speeds, and vice versa. The answer is Switchblade, an unmanned, shape-changing plane concept under development by Northrop Grumman.