Solar Impulse, the four-engine solar-powered Swiss plane, completed a 26 hour flight. Pilot Andre Borschberg flew the craft to an altitude of 8,654 meters while achieving a top ground speed of 68 knots.
Solar Impulse's 12,000 solar panels cover its 64 meter wingspan; approximately one-quarter of the weight of the plane is accounted for by the lithium batteries that powered it at night.
The Solar Impulse thus solved a problem with solar-powered aircraft described by far-seeing sf author and editor John W. Campbell in his 1930 novel The Black Star Passes:
"Dad, I believe that you have been trying to develop a successful solar engine. One that could be placed in the wings of a plane to generate power from the light falling on that surface..."
"...the one big trouble with all solar engines, eliminating the obvious restriction that they decidedly aren't dependable for night work, is the difficulty of getting an area to absorb the energy.
Thanks to Fortigurn for pointing out this story.
Scroll down for more stories in the same category. (Story submitted 7/11/2010)
'Old People Began to Cross The Continent In Their Own Cars'
'It was a relief to enter one of the comfortable autos, whisper a direction down the tube, and just know that you would be taken to your destination in the quickest, safest, and cheapest manner.' - Dr. David H. Keller, 1935.
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Prairie Madness - And Space Sickness
'Space-sickness is one of the most unpleasant sensations that a human being can experience. Not all are subject to it...'
'Old People Began to Cross The Continent In Their Own Cars'
'It was a relief to enter one of the comfortable autos, whisper a direction down the tube, and just know that you would be taken to your destination in the quickest, safest, and cheapest manner.'
Starfall Manufacturing Drugs In Space
'The vast spinning sphere of Factory in the Sky loomed above and ahead of us, gleaming white against the unfathomable jet depths of surrounding space.'
The Solar Oberth Slingshot
'And if it doesn’t work,' inquired Lazarus, 'what does that make us? Sunspots?'
'If Anyone Is Watching Earth...'
'Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization.'