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(14)85

Leonardo da Vinci (1452-1519) was interested in developing ways for humans to be able travel through the air like a bird. He started to make drawings for an ornithopter about 1485.   The ornithopter is designed as a human powered machine whose wings flap like a bird or bat.  In NASA’s History of Flight, da Vinci’s [...]

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    • 10/10/10 1438 days ago