Scotland’s Unmanned Sky Hopper Scottish startup Sky Hopper is developing an electric vertical-takeoff-and-landing logistics (VTOL) unmanned aircraft, initially aimed at resupplying remote and isolated communities. The design goal is to carry a 100-kg (220-lb.) payload 100 km (60 mi.) with a cruise speed of at least 100 kt. The battery-powered vehicle has two tilting ducted fans for vertical lift and forward thrust. The “ring wing” ducts provide lift in forward flight. ...

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