The Solar Impulse HB-SIA has the wingspan of a Boeing 747, but only weighs as much as an average family car (Photo: Stephane Gros/Solar Impulse)
The wing of the Solar Impulse HB-SIA has over 12,000 solar cells (Photo: Le Truc/Solar Impulse)
The Solar Impulse 100% solar-powered aircraft was unveiled near Zurich on June 26th. (Photo: Stephane Gros/Solar Impulse)
After six long years of planning, talking and hard work, the world has finally had its first look at the 100% solar-powered Solar Impulse HB-SIA. This remarkable feat of engineering, with the wingspan of a Boeing 747 but only the weight of an average family car, has over 12,000 solar cells powering four electric motors with a maximum power of 10HP. The aircraft prototype is expected to take its first flights before the end of the year.
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