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The US Army is making a laser-powered drone that can fly indefinitely

点击量:   时间:2019-03-04 13:10:01

By David Hambling THE US Army is taking wireless recharging to new heights, by using lasers to power small drones in mid-air. Small multicopters – flying vehicles with several rotating blades – have proven valuable to the military for intelligence gathering. But they are power-hungry, meaning that their flying time is limited to half an hour or less. Now the US Army’s Communications-Electronics Research,