File:HE2G8.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 507 pixels. Other resolutions: 320 × 203 pixels | 640 × 405 pixels | 984 × 623 pixels.
Original file (984 × 623 pixels, file size: 376 KB, MIME type: image/jpeg)
Summary
| Description |
Français : En 1907, l'inventeur français Paul Cornu a fabriqué un hélicoptère qui utilisait deux rotors contrarotatifs de 20 pieds (6 mètres) entraînés par un moteur Antoinette de 24 ch (18 kW). Il a soulevé son inventeur à environ cinq pieds (1,5 mètre) et est resté en l'air une minute.
English: In 1907, the French inventor Paul Cornu made a helicopter that used two 20-foot (6-meter) counter-rotating rotors driven by a 24-hp (18-kW) Antoinette engine. It lifted its inventor to about five feet (1.5 meters) and remained aloft one minute. |
| Date | circa 1907 |
| Source |
http://www.centennialofflight.gov/essay/Rotary/early_20th_century/HE2G8.htm Transferred from en.wikipedia |
| Author | Unknown author |
| Permission (Reusing this file) |
PD-USGOV |
Licensing
|
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. | ||
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2007-01-04 21:14 Signaleer 504×157×??? (27573 bytes) In 1907, the French inventor Paul Cornu made a helicopter that used two 20-foot (6-meter) counter-rotating rotors driven by a 24-hp (18-kW) Antoinette engine. It lifted its inventor to about five feet (1.5 meters) and remained aloft one minute. ==Source=
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:27, 25 February 2023 | | 984 × 623 (376 KB) | wikimediacommons>FOX 52 | wider view |
File usage
The following page uses this file:
