Image:XH-51A-1.jpg

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The second XH-51A, BuNo 151263, following its conversion into a compound rotorcraft testbed. The single J60 turbojet, stub wings and other refinements allowed the XH-51 Compound to set an unofficial rotorcraft level-flight speed record in June 1967. The chin-mounted probe carried special test intrumentation.

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This work is copyrighted and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content#Images or Wikipedia:Non-free content#Audio clips. However, it is believed that the use of this work in the article "Lockheed XH-51" :

To illustrate the subject in question
Where no free equivalent is available or could be created that would adequately give the same information
On the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation ([1]),

qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights.

To the uploader: this tag is not a sufficient claim of fair use. You must also include the source of the work, all available copyright information, and a detailed non-free use rationale.

Fair use rationale: This image, copyright of Lockheed-California, is used to illustrate the subject, and no free images are available, as the aircraft did not enter production.

Source: http://avia.russian.ee/helicopters_eng/lok_compaud.php Copyright established by Harding, Stephen (1997). U.S. Army Aircraft Since 1947. Atglen, PA, USA: Schiffer Publishing Ltd., page 157. ISBN 96-69996

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	Date/Time	Dimensions	User	Comment
current	18:08, 2 September 2007	402×264 (31 KB)	BillCJ (Talk \| contribs)	(== Summary == {{Non-free fair use in\|Sikorsky S-69}} Fair use rationale: This image, copyright of Lockheed-California, is used to illustrate the subject, and no free images are available, as the aircraft did not enter production. Source: http://avia.russ)