The next issue was that the expensive, 20% efficient solar panels are exceedingly fragile, so the hope was that hot-gluing them to the foam of the airplane would keep them safe, even in the case ...
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Breakthrough materials with steel-strength, light as foam, could make powerful planesResearchers have developed high-performance nano-architected materials that have the strength of carbon steel but the lightness of Styrofoam ... made of titanium on a plane with this material ...
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