Runway tests in Dübendorf, Switzerland, this morning took the craft, driven by four electric propellers and 400 kilograms of batteries, to a speed of 37 kilometres per hour just a little shy of the 45 needed for it to take off. When those tests went well, test pilot Markus Scherdel took Solar Impulse aloft for the first time.
http://amelito.livejournal.com
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