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Patent description for NASA's Helios high altitude aircraft
19-03-2014, 04:57 PM (This post was last modified: 19-03-2014 04:57 PM by Tefkros1.)
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Patent description for NASA's Helios high altitude aircraft
Here is the (now luckily expired) patent description for NASA's Helios High Altitude aircraft, it can provide valuable insight especially on high altitude propeller control and power supply.

NASA Helios
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Patent description for NASA's Helios high altitude aircraft - Tefkros1 - 19-03-2014 04:57 PM

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