Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 3,264 × 2,448 pixels.
Original file (3,264 × 2,448 pixels, file size: 3.37 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
Helicopters today are considered a loud, bumpy and inefficient mode for day-to-day domestic travel—best reserved for medical emergencies, traffic reporting and hovering over celebrity weddings. But NASA research into rotor blades made with shape-changing materials could change that view. The solution could lie in rotor blades made with piezoelectric materials that flex when subjected to electrical fields, not unlike the way human muscles work when stimulated by a current of electricity sent from the brain. NASA and the Defense Advanced Research Projects Agency, also known as DARPA, the U.S. Army, and The Boeing Company have spent the past decade experimenting with smart material actuated rotor, or SMART, technology, which includes the piezoelectric materials. Tests in a NASA wind tunnel of this SMART rotor hub confirm the ability of advanced helicopter-blade active control strategies to reduce vibrations and noise. |
| Date | |
| Source | https://flic.kr/p/oNTPRu |
| Author | NASA |
Licensing
|
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
 |
Warnings:
|
|
This image was originally posted to Flickr by NASA on The Commons at https://flickr.com/photos/44494372@N05/14970519402. It was reviewed on 2017-08-03 20:42:28 by FlickreviewR, who found it to be licensed under the terms of the No known copyright restrictions, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:11, 4 October 2014 | | 3,264 × 2,448 (3.37 MB) | <bdi>Numéro 1963</bdi> | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
