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Paul Cornu's helicopter 1907 - the first helicopter to achieve free flight, a twin-rotor machine designed by French cycle-dealer Paul Cornu and test flown at Lisieux on 13 November 1907. Forwarded by a 24hp Antoinette engine, the machine attained a maximum of 20sec in the air at a height of 6ft.. ©TopFoto

Paul Cornu's helicopter 1907 - the first helicopter to achieve free flight, a twin-rotor machine designed by French cycle-dealer Paul Cornu and test flown at Lisieux on 13 November 1907. Forwarded by a 24hp Antoinette engine, the machine attained a maximum of 20sec in the air at a height of 6ft.. ©TopFoto.
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Paul Cornu's helicopter 1907 - the first helicopter to achieve free flight, a twin-rotor machine designed by French cycle-dealer Paul Cornu and test flown at Lisieux on 13 November 1907. Forwarded by a 24hp Antoinette engine, the machine attained a maximum of 20sec in the air at a height of 6ft.. ©TopFoto
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Album / TopFoto
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Taille de l'image:
5485 x 3984 px | 62.5 MB
Taille d'impression:
46.4 x 33.7 cm | 18.3 x 13.3 in (300 dpi)
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