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Oemichen2.jpg(452 × 206 pixels, file size: 25 KB, MIME type: image/jpeg)


English: Étienne Oehmichen Helicopter No. 2, 1923-1924. On May 4 1924, it was the first helicopter to fly on the distance of one kilometer (0.6 mile) in a closed-circuit, landing at his starting point.
Français : L'hélicoptère N°2 d'Étienne Œhmichen, 1923-1924. Il est le premier à réaliser un vol d'1 km en circuit fermé le 24 mai 1924.
Date 1924
Source Public domain
Author Unknown


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