Last we heard from the U.K. ’s high altitude Zephyr sailplane , it was unofficially breaking the record forlongest unmanned flight . That was back in 2007 , when the record was a paltry 30 hour , and the Zephyr was capable to superintend a 54 hour trajectory , thanks to its solar powered batteries . On Friday , the Zephyr flew that and them some when it finish an 84 - hr flight without issue . Military types are no doubt cream their lips at the news , as the plane was design to underpin scout troop in the discipline with uninterrupted surveillance and communication support from its rod on high at 60,000 ft . [ Telegraph ]
militaryRobotsSolar powerWorld Records
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