Alphonse Pénaud's helicopter, driven by twisted rubber bands. Alphonse Pénaud (1850-1880) a French aviation designer and engineer. Dated 19th Century

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Photo credit: © World History Achive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, alphonse, aviation, band, bands., century, design, designer, driven, engineer, engineering, france, french, helicopter, illustrated, illustration, mechanical, rubber, twisted, énaud, énauds