![This image is not present because of licensing restrictions](../../images/1x1white.gif) |
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.
|
![Featured picture star](../../images/17/1712.png) |
This is a featured picture, which means that members of the community have identified it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. If you have a different image of similar quality, be sure to upload it using the proper free license tag, add it to a relevant article, and nominate it. |
![This image is not present because of licensing restrictions Wikipedia logo](../../images/1x1white.gif) |
This image was selected as picture of the day on the English Wikipedia for May 2, 2006. |
Description |
English: Wake Vortex Study at Wallops Island The air flow from the wing of this agricultural plane is made visible by a technique that uses colored smoke rising from the ground. The swirl at the wingtip traces the aircraft's wake vortex, which exerts a powerful influence on the flow field behind the plane. Because of wake vortex, the Federal Aviation Administration (FAA) requires aircraft to maintain set distances behind each other when they land. A joint NASA-FAA program aimed at boosting airport capacity, however, is aimed at determining conditions under which planes may fly closer together. NASA researchers are studying wake vortex with a variety of tools, from supercomputers, to wind tunnels, to actual flight tests in research aircraft. Their goal is to fully understand the phenomenon, then use that knowledge to create an automated system that could predict changing wake vortex conditions at airports. Pilots already know, for example, that they have to worry less about wake vortex in rough weather because windy conditions cause them to dissipate more rapidly.
|
Date |
4 May 1990 |
Source |
![Shuttle.svg](../../images/31/3129.png) |
This image or video was catalogued by Langley Research Centre of the United States National Aeronautics and Space Administration (NASA) under Photo ID: EL-1996-00130 AND Alternate ID: L90-5919. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.
|
|
Author |
NASA Langley Research Centre (NASA-LaRC), Edited by Fir0002 |
Permission ( Reusing this file) |
Public domain (see below)
|
Recognition
|
|
![Wikimedia Commons](../../images/14/1433.png) ![Wikipedia](../../images/3/324.png)
|
![Video-display.svg](../../images/29/2995.png) With an aspect ratio of 4:3 or 5:4, this image is suitable as a computer wallpaper (see gallery).
If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.
|
|
|
Licensing information
Public domainPublic domainfalsefalse |
![Public domain](../../images/0/36.png) |
This file is in the public domain 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:
- Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
- The NASA website hosts a large number of images from the Soviet/ Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
- Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI. See also {{ PD-Hubble}} and {{ Cc-Hubble}}.
- The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
- Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted.
|
File usage
The following pages on Schools Wikipedia link to this image (list may be incomplete):
Wikipedia for Schools is one of SOS Childrens Villages' many educational projects. SOS Childrens Villages helps more than 2 million people across 133 countries around the world. Sponsoring a child is the coolest way to help.