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File:NASA JetStar Side.jpg

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English: In this photograph, the C-140 JetStar is fitted with a model of a high-speed propeller. Three different designs were tested at NASA's Dryden Flight Research Facility in 1981-1982. Their swept-back blades were intended to increase the speed and fuel efficiency of turboprop aircraft. Speeds of Mach 0.8 were thought possible, while using 20 to 30 percent less fuel than standard jet engines.
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Source NASA ECN-15655
Author NASA
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-15655.

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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/TimeThumbnailDimensionsUserComment
current21:37, 5 April 2023Thumbnail for version as of 21:37, 5 April 20235,100 × 4,000 (21.09 MB)Caddyshack01Higher resolution version of image
05:42, 7 April 2011Thumbnail for version as of 05:42, 7 April 20111,024 × 798 (91 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Enhanced version of an image released by NASA.}} |Source=Transferred from [http://en.wikipedia.org en.w

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