![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUGAQ9W_L-BrdEBdFY_IVAx_AldYeoJ7PVW91HYk456_xSwomTeHrFTtghQ86leMSzd_vMxWbNMN1Hfmk41_uoNuI8nHWkxJxqQv4AJfoMxIGQON0k2zWzqk-YaLbDHUfTvwSj_DcXibwpSPdY/s1600/weairtere.jpg)
The Gyroptère was designed in 1913–1914 by Alphonse Papin and Didier Rouilly in France, inspired by a maple seed. Testing was delayed due to the outbreak of World War I and did not take place until 31 March 1915 on Lake Cercey on the Côte-d'Or. Unfortunately, the aircraft became unstable and the pilot had to abandon it, after which it sank.
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