Meet X-66A: NASA and Boeing team up for newest X-plane to make travel sustainable
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Meet X-66A: NASA and Boeing team up for newest X-plane to make travel sustainable
https://interestingengineering.com/innovation/x-66a-nasa-boeing-x-plane-travel
Along with NASA, Boeing will build, test, and fly a full-scale demonstrator aircraft with extra-long and thin wings, known as a Transonic Truss-Braced Wing concept.