Flexrotor Guides Fleet Through Arctic Ice Aerovel’s Flexrotor vertical-takeoff-and-landing (VTOL) unmanned aircraft has helped guide a fleet of workboats through Arctic pack ice to retrieve anchors from mooring sites in the Beaufort and Chukchi seas. The long-endurance small UAV, which takes off like a helicopter then tips over into wingborne flight, operated from the lead ship to provide long-range reconnaissance imaging at sea. The two-week mission involved five flights totaling 19 ...

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