to the personal jet pack constructed by Andreas Petzoldt.

History

Papin-Rouilly Gyroptère

The Gyroptère was designed in 1913-1914 by Alphonse Papin and Didier Rouilly in France, inspired by a maple seed. Papin and Rouilly obtained French patents 440,593 and 440,594 for their invention, and later obtained US patent 1,133,660 in 1915. The Gyroptère was characterized

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