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Power

New Record For Solar-Powered Autonomous Flight: 28 Hours Without Refueling 20

Hallie Siegel describes a new and impressive achievement for solar-powered flight: keeping a drone aloft for more than a full day. From the article: To actually pull it off has required a fair bit of innovation in flexible solar cells, high energy density batteries, miniaturized MEMS and CMOS sensors, and powerful processors ... but researchers at ETH Zurich have just recently managed to keep their unmanned UAV aloft for 28 hours without any fuel, building on their previous record by over an hour. Having more than 24 hours of endurance is important because overcast skies can inhibit recharging and poor weather or high winds can affect power consumption.
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New Record For Solar-Powered Autonomous Flight: 28 Hours Without Refueling

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It seems that more and more mathematicians are using a new, high level language named "research student".

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