Solar Impulse

Solar-Powered Plane Makes First International Flight

On May 13, 2011, HB-SIA, the first Solar Impulse aircraft, landed at Brussels airport after completing the first international flight by a solar-powered aircraft. The Switzerland to Belgium flight, which is a roughly 300 mile trip, reached an average altitude of 6,000 ft (1,829 m) with an average speed of 50 km/h (31 mph). The …

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