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HE2G13.jpg (327 × 432 piksel, fayl hajmi: 52 KB, MIME tipi: image/jpeg)

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Taʼrif
English: Cornu helicopter. Paul Cornu in his first helicopter in 1907. Note that he is sitting between the two rotors, which rotated in opposite directions to cancel torque. This helicopter was the first flying machine to have risen from the ground using rotor blades instead of wings.
Sanasi circa 1907
date QS:P,+1907-00-00T00:00:00Z/9,P1480,Q5727902
Manba The U.S. Centennial of Flight Commission
Muallif UnknownUnknown
© 2001 Smithsonian Institution, National Air and Space Museum, Videodisc. 2B 5847
Ruxsat
(Bu faylning takror foydalanilishi)		 PD-USGov

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  • 2007-01-04 21:10 Signaleer 327×432× (47053 bytes) Paul Cornu in his first helicopter in 1907. Note that he is sitting between the two rotors, which rotated in opposite directions to cancel torque. This helicopter was the first flying machine to have risen from the ground using rotor blades instead of win

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Paul Cornu

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joriy03:18, 2018-yil 16-sentyabr03:18, 2018-yil 16-sentyabr dagi versiya uchun tasvir327 × 432 (52 KB)WikiPedantadjusted levels
09:13, 2010-yil 8-fevral09:13, 2010-yil 8-fevral dagi versiya uchun tasvir327 × 432 (46 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|''no original description''}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia]; transfer

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