Jacob Degen's 1808 ornithopter with flap valves, in which the pilot stood on a rigid frame and worked the wings with a movable horizontal bar. His 1809 attempt at flight failed, so he then added a small hydrogen balloon and the combination achieved some success. (Jacob Degan, 1760-1848).

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Jacob Degen's 1808 ornithopter with flap valves, in which the pilot stood on a rigid frame and worked the wings with a movable horizontal bar. His 1809 attempt at flight failed, so he then added a small hydrogen balloon and the combination achieved some success. (Jacob Degan, 1760-1848). From Les Merveilles de la Science, published

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Photo credit: © Classic Image / Alamy / Afripics
License: Licensed
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