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solar powered plane

 
Jeanne Boyarsky
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A solar powered plane flew from Washington DC to New York City last night. Obviously it charged during the day, but still cool.


(from http://images.nationalgeographic.com/wpf/media-live/photos/000/691/cache/solar-impulse-flying-sunset_69119_600x450.jpg)
 
Martin Vajsar
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Once you can keep the plane up for 24 hours, you can go anywhere

Non-manned solar powered planes is already capable of remaining airborne for many days since a few years ago. The problem with manned planes is twofold - the crew adds considerable weight, and it gets really cold in the night - and there's still not enough capacity in the batteries to fly and heat all the night at the same time. So no heating. And it gets pretty cold up there.
 
chris webster
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The DC to NYC trip was the last leg of a solar-powered journey right across the USA:

http://www.bbc.co.uk/news/science-environment-23195087

Very cool indeed.
 
Frank Silbermann
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Once solar powered planes are perfected, the Air Force' next project will be solar-powered explosives.
 
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