Prototypes are always good if they can prove the weakest link between theory and practice. Then, the heavy industry can have the cake and make it ten times bigger, but the start and beauty of things is in the trial-and-error phase. Such is the case of Zephyr, a solar powered aircraft that took off more than seven days ago and is still aloft.

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While the Solar Impulse jumps hurdles and breaks records for manned solar-powered flight, a different plane altogether is setting similar marks for unmanned flight. The Zephyr is in the midst of attempting a 14-day continuous high-altitude flight powered only by solar panels integrated into the plane’s facade. Already, the Zephyr has set a new record [...]

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While the Solar Impulse jumps hurdles and breaks records for manned solar-powered flight, a different plane altogether is setting similar marks for unmanned flight. The Zephyr is in the midst of attempting a 14-day continuous high-altitude flight powered only by solar panels integrated into the plane’s facade. Already, the Zephyr has set a new record [...]

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This is no ordinary plane. It can fly high above the clouds for months on end. It can also fly without having to go back down to earth for some fuel. And it is a spy plane.
A group of British scientists created this spy plane which runs using solar power. And this has actually just [...]

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