Unmanned aircraft drone refuels autonomously in MID-AIR for longer missions - Daily Mail

http://www.dailymail.co.uk/sciencetech/article-3594444/Now-drones-Unmanned-aircraft-refuel-autonomously-MID-AIR-meaning-carry-longer-missions.html

Daily Mail

Unmanned aircraft dronerefuels autonomously in MID-AIR for longer missions
Daily Mail
Engineers have developeddrones that can refuel in midair. The tanker (right) uses cameras and markers to establish the position of the receiver (left). Once it has got itself into the right position, it drives forward and refuels the receiving drone ...