File:Douglas B-18 test aircraft for the 3rd Attack Group, Barksdale Field 061128-F-1234S-013.jpg

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English: A U.S. Army Air Corps Douglas B-18 test aircraft that came from the 3rd Attack Group, Barksdale Field, Louisiana, at the Langley Aeronautical Laboratory at Hampton, Virginia (USA). In the spring of 1941 Langley installed an experimental low-drag laminar flow test panel on the wing of a Douglas B-18 bomber. Here, November 1941, the same B-18 was used to test an airfoil (NACA 0012) which was mounted just forward of the vertical stabilizer. The purpose of this test was to conduct boundary-layer and profile-drag tests in which Reynolds Number and angle of attack were varied independently.

Date

5 November 1941

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NASA Langley Research Center [1] photo EL-2002-00608

This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: EL-2002-00608.

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NASA

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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	Thumbnail	Dimensions	User	Comment
current	21:20, 12 December 2012		2,865 × 1,973 (1.48 MB)	Cobatfor (talk \| contribs)	NACA photo
	19:34, 16 February 2007		1,800 × 1,153 (181 KB)	Stahlkocher (talk \| contribs)	'''Description:''' Douglas B-18 test aircraft for the 3rd Attack Group, Barksdale Field '''Source:''' US Goverment {{PD-USGov}} Category:Douglas B-18

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File:Douglas B-18 test aircraft for the 3rd Attack Group, Barksdale Field 061128-F-1234S-013.jpg

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5 November 1941