Aircraft

NASA's Helios prototype spans new heights

NASA's Helios prototype spans ...
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It has a wingspan longer than a Boeing 747, weighs less than 900 kg, incorporates 14 solar-powered propellers and it's the highest flying propeller-powered aircraft in the world. With its soaring profile and radical "flying wing" design, NASA's Helios prototype is set to revolutionise air-based communications platforms, the placement of low orbit satellites and even unmanned flights in the Martian atmosphere.

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