The 1937 Cheranovskii BICh-18 Muskuolet, a human-powered glider-ornithopter biplane

First published at 06:47 UTC on May 22nd, 2023.
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. After being launched, it would flap its wings, which were connected to pedals in the cockpit. ()

CategoryEducation
SensitivityNormal - Content that is suitable for ages 16 and over
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