Curly-Winged UAV Will Leech From Power Lines, Fly Forever

The next version of the DevilRay unmanned aerial vehicle will feature the ability to dock to and recharge from power lines. Made by Defense Research Associates, the UAV uses down-curled wingtips to make such a low-speed maneuver possible. The four-foot wide, propeller-driven flying wing will use "inverse capped helix… »7/07/08 9:20pm7/07/08 9:20pm