Акс:HE2G13.jpg

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HE2G13.jpg ‎((327 × 432 пиксел, ҳаҷми парванда: 52 кбайт, навъи MIME: image/jpeg))

Ин файл аз Викианбор ва дар дигар лоиҳаҳо метавонад истифода шавад. Тафсилоти ин файл саҳифаи тафсилоти файл дар зер нишон дода шудааст.

Хулоса

Тавсифот
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.
Сана circa 1907
date QS:P,+1907-00-00T00:00:00Z/9,P1480,Q5727902
Манбаъ The U.S. Centennial of Flight Commission
Муаллиф НомаълумUnknown
© 2001 Smithsonian Institution, National Air and Space Museum, Videodisc. 2B 5847
Иҷозат
(Пешроҳандозии ин парванда)		 PD-USGov

Иҷозатнома

Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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The original description page was here. All following user names refer to en.wikipedia.
  • 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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тавсифҳо

Paul Cornu Англисӣ

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нусхаи феълӣ03:18, 16 сентябри 2018Акси бандангуштӣ аз нусхаи то 03:18, 16 сентябри 2018327 × 432 (52 кбайт)WikiPedantadjusted levels
09:13, 8 феврали 2010Акси бандангуштӣ аз нусхаи то 09:13, 8 феврали 2010327 × 432 (46 кбайт)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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