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xb70ship204.jpg (1024×768)

xb70ship204.jpg (1024×768)

Folding wings have been used for decades, mainly to reduce space on the ground. But thr technology was also incorporated into a US nuclear bomber in the 1960s, the XB-70 Valkyrie (pictured), but only the tips folded during flight

Nasa is working on aircraft with wings that FOLD while flying

Folding wings have been used for decades, mainly to reduce space on the ground. But thr technology was also incorporated into a US nuclear bomber in the 1960s, the XB-70 Valkyrie (pictured), but only the tips folded during flight

North American Aviation XB-70A-1-NA Valkyrie 62-0001 at Wright-Patterson Air Force Base, Ohio. (U.S. Air Force)

North American Aviation XB-70A-1-NA Valkyrie 62-0001 at Wright-Patterson Air Force Base, Ohio. (U.S. Air Force)

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