File:330-PSA-58-63 (USN 711258a) (21541727674).jpg
Jump to navigation
Jump to search
Size of this preview: 793 × 600 pixels. Other resolutions: 318 × 240 pixels | 635 × 480 pixels | 1,016 × 768 pixels | 1,280 × 968 pixels | 2,560 × 1,935 pixels | 2,836 × 2,144 pixels.
Original file (2,836 × 2,144 pixels, file size: 2.15 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
_(21541727674).jpg&action=edit§ion=1){kind=link}
| Description | 330-PSA-58-63 (USN 711258a): First SX-51A Flight Photo. This photograph shows the Lockheed-California Company’s XH-51A, rigid-rotor helicopter in flight, November 1, 1962. It is one of two advanced concept helicopter research vehicles built under a joint U.S. Navy-Army contract, the XH-51A incorporates Lockheed’s breakthrough technology that uses the inherently stable effects of the rigid rotor to simplify control. Designed for speeds in excess of 150 mph, the XH-51A features “hands-off” flying capability with no form of autopilot or artificial stabilization. The XH-51A is equipped with a retractable landing gear, eliminated the drag inherent in conventional landing gear. The skids, shown in this photo, are free-falling and can operate without hydraulic power. Another XH-51A innovation: all-stainless steel rotor blades. Stable and controllable with power on or off, the XH-51A design emphasizes safety, economy, and ease of handling. Unique performance characteristics of the rigid-rotor helicopter afford potential application to a variety of military missions. Lockheed’s flight prove-out program for its rigid-rotor helicopter concept began in 1959 with a developmental flying test bed machine that logged hundreds of successful flights Photograph released March 13, 1963. (2015/10/13). |
| Date | |
| Source | 330-PSA-58-63 (USN 711258a) |
| Author | National Museum of the U.S. Navy |
Licensing[edit]
_(21541727674).jpg&action=edit§ion=2){kind=link}
|
This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/21541727674 (archive). It was reviewed on 10 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
|
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:29, 10 July 2018 | | 2,836 × 2,144 (2.15 MB) | Hiàn (alt) (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
File usage on other wikis
The following other wikis use this file:
- Usage on ru.wikipedia.org
_(21541727674).jpg&oldid=877785884){kind=link}