File:Boeing 747 performing wing vortex trials 3.jpg

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English: In this 1974 NASA Flight Research Center photograph, a Boeing B-747 jetliner (NASA 905) is shown taking part in the trailing wake vortex study. In the photograph, the two wing tip vortex trails, being the strongest, stay in tight cylindrical rolls. The "strength" of the vortices decreases toward the midspan of each wing, and the trails become less defined.
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Source http://www.dfrc.nasa.gov/Gallery/Photo/B-747/HTML/ECN-4242.html (direct link)
Author NASA
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(Reusing this file)		 Public domain
This image or video was catalogued by Armstrong Flight Research Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ECN-4242.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Licensing

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Public domain 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.)
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date/time username resolution size edit summary
2009-07-03T01:04:57Z User:Cropbot 2000×1586 261.71Kb upload cropped version, operated by [[User:Huntster]]. Summary: cropped
2009-06-18T11:50:57Z User:Sanao 2000×1720 300.92Kb {{Information |Description=In this 1974 NASA Flight Research Center photograph, a Boeing B-747 jetliner is shown taking part in the trailing wake vortex study. In the photograph, the two wing tip vortex trails, being the strongest, stay in tight cylindric

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Date/TimeThumbnailDimensionsUserComment
current16:48, 6 July 2009Thumbnail for version as of 16:48, 6 July 20092,000 × 1,586 (262 KB)BetacommandBot (talk | contribs)move approved by: User:Huntster This image was moved from File:ECN-4242.jpg == {{int:filedesc}} == {{Information |Description={{en|1=In this 1974 NASA Flight Research Center photograph, a Boeing B-747 jetliner (NASA 905) is shown taking part in

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