Credit: Solar Impulse/ Jacques-HenriAdd/ The Economist
Round the world solar powered flight.
http://www.economist.com/news/science-and-technology/21572731-attempt-fly-around-world-solar-powered-plane-its-moment-sun / LiIon lithium ion battery solar powered solar-powered aircraft Silicon Valley 747 cargo jet flight tests experimental prototype project Solar Impulse aircraft circumnavigating globe power Sun test flights prototype base airfield Payerne Switzerland Solar Impulse critical safety check main wing spar backbone aeroplane broke failed during structural tests Bertrand Piccard co-piloted Orbiter 3 first balloon to circumnavigate the globe André Borschbergline of adventurers August first to fly a balloon into the stratosphere Jacques record depths deep sea deep-sea submersible suitable weather operating experience development technologies develop Solar Challenger flew across the English Channel 1981 built by the late Paul MacCready American aeronautical engineer 14.3 metre wing photovoltaic cells two electric motors single propeller fly through the night circumnavigate globe non-stop for five-to-six days plan take off easterly direction land continent Tropic of Cancer long flights across oceans cruise at just 70kph 43mph ultimate range exercise lie down autopilot system ground crew sleep deprivation take taking off in the early morning 10,000 metres above stormclouds altitude oxygen supply night descend descends land landing early evening winds light meteorologists meteorologist weather models /
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