File:PW-Allison-578-DX 1989.png

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DescriptionPW-Allison-578-DX 1989.png	The Pratt & Whitney-Allison 578–DX geared propfan demonstrator engine, installed on an MD-80 testbed aircraft.
Source	[1]; NASA/CR. 2008-215141. Figure 4. Ultra-high bypass ratio propulsors designed, built, and flight tested (page 3)
Author	Ron Kawai

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	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: Use of NASA logos, insignia and emblems is restricted per U.S. 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.[2] 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. [3] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [4] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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Date/Time	Dimensions	User	Comment
2019-06-21 20:22:17	1442 × 961	D271l	The Pratt & Whitney-Allison 578–DX geared propfan demonstrator engine, installed on an MD-80 testbed aircraft in April/May 1989. Author/source/URL: {{cite report \|title=Quiet cruise efficient short take-off and landing subsonic transport system \|url=https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080015836.pdf \|series=NASA/CR \|volume=2008-215141 \|given=Ron \|surname=Kawai \|publication-date=April 2008 \|at=Figure 4. Ultra-high bypass ratio propulsors designed, built, and flight tested...

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	08:26, 23 June 2019		1,442 × 961 (936 KB)	FSock (talk \| contribs)	Transferred from en.wikipedia (MTC!) (1.1.1)

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- محرك دوار مفتوح
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- Pratt & Whitney/Allison 578-DX
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File:PW-Allison-578-DX 1989.png

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