The Helios Prototype, a 247-foot flying wing, will eventually be solar powered and be able to remain at high altitudes for days to weeks at a time. Photo for NASA/Dryden by Tom Tschida. Click to enlarge.
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The Helios Prototype, a 247-foot flying wing, will eventually be solar powered and be able to remain at high altitudes for days to weeks at a time. Photo for NASA/Dryden by Tom Tschida. Click to enlarge. |
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