Solar Impulse is a Swiss long-range solar powered craft being
developed by Bertrand Piccard and André Borschberg. In 2014, it becomes the
first piloted fixed-wing plane to circle the Earth using solar power alone.
Solar
Impulse has the wingspan of a large airliner, but weighs no more than a saloon
car. It uses 12,000 solar cells on its 64-metre wings to charge batteries
providing energy for 10-horsepower electric motors driving its propellors. Its
average speed is 70kph and it has a maximum altitude of 8,500 metres.*
Reference
http://www.physorg.com/news/2011-05-swiss-solar-aircraft-intl-flight.html
Accessed 22nd May 2011.
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