Leonardo da Vinci made many drawings of wings and flying machines in the late 1400s. He kept them hidden, and they weren’t discovered until 400 years after his death.
Sketch dated 1488.
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Leonardo da Vinci made many drawings of wings and flying machines in the late 1400s. He kept them hidden, and they weren’t discovered until 400 years after his death.
Sketch dated 1488.
