Solar impulse

Solar Impulse takes-off for the final leg of the Coast-to-Coast Across America flights © Solar Impulse / Ackermann /

Solar Impulse completes US flight

It might have been a little late for July 4 celebrations, but the solar energy powered Solar Impulse aircraft touched down at the end of its coast-to-coast flight three hours ahead of schedule, at 11.09…

Across America – Golden Gate Flight, © Solar Impulse / J. Revillard

Battery key to solar-powered plane

Press reports of the Solar Impulse sun-powered aircraft’s nighttime touchdown at Washington DC underscored the key role batteries play in putting solar power to work. According to the Solar Impulse web site, though, the plane, which is…