SOLAR IMPULSE 2, THE #RTW SOLAR AIRPLANE

March 19, 2015 | Solar Impulse - Around The World In A Solar Airplane

 

Solar Impulse is the only airplane of perpetual endurance, able to fly day and night on solar power, without a drop of fuel.
The chances of succeeding at the first attempt to build a solar airplane capable of flying around the world were judged to be slim, so a more rudimentary prototype, HB-SIA, was first constructed. Lessons learned from this prototype are incorporated in Solar Impulse 2, the Round-The-World Solar Airplane.