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A comment on New Electric Drone Has Groundbreaking Flight Time.
In 2005 AC-Propulsion flew a fixed wing drone for 48 hours and could have gone indefinitely.
https://www.machinedesign.com/news/solar-powered-uav-flies-t...
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In 2005 AC-Propulsion flew a fixed wing drone for 48 hours and could have gone indefinitely.
https://www.machinedesign.com/news/solar-powered-uav-flies-t...