The next version of the DevilRay unmanned aerial vehicle will feature the ability to dock to and recharge from power lines. Made by Defence Research Associates, the UAV uses down-curled wingtips to make such a low-speed manoeuvre possible. The four-foot wide, propeller-driven flying wing will use “inverse capped helix winglets” to take advantage of the wingtip wind vortexes that form during flight, providing stabilisation in lieu of a tail.
