# Talk:Lockheed YF-22

There are some good PD iamges at Defense Imagery.mil, including a couple of in-flight shots. - BilCat (talk) 08:49, 9 September 2010 (UTC)
Talk:Lockheed YF-22/GA1

The Mach 1.58 supercruise speed is given by multiple sources, including Aronstein's book. Also, I don't see why we need to round to one decimal place. The F-22's supercruise speed is also given in two decimal places.  — Preceding unsigned comment added by 108.228.145.163 (talk) 08:20, 20 August 2014 (UTC) 

Thanks for adding a source. Now wasn't that easy? - BilCat (talk) 08:50, 20 August 2014 (UTC)

The "YF" designation should be explained.  The 'F' is obvious (Fighter), but the 'Y' is not.  I asked an AF Col. what the 'Y' meant, and he said that it simply means "one step beyond 'X'" (experimental).  Of course, that would not qualify as a proper WP source.  Can somebody find a source and clarify this in the article?  —Thanks in advance, E:71.20.250.51 (talk) 03:08, 23 September 2014 (UTC)

The Y means prototype per 1962 United States Tri-Service aircraft designation system#Status prefix.  This effectively means a pre-production aircraft and is one step beyond experimental (X) as the Colonel stated. -Fnlayson (talk) 04:47, 7 July 2024 (UTC)

The F-22 design evolution articles on Code One Magazine (part 1 and part 2) has a wealth of images, especially of the proposals from Lockheed, Boeing, and General Dynamics during the RFI, the initial submissions for the RFP, and the design evolution into the YF-22 and then into the F-22. However, I couldn't find whether or not these images are free to use, and as such, is there a way to post low-resolution non-free images in the article? It would greatly help visualize the descriptions in this article.

 Steve7c8 (talk) 06:28, 18 May 2024 (UTC)
I posted downscaled thumbnail versions of the images for illustrative purposes. Steve7c8 (talk) 23:49, 19 May 2024 (UTC)
@Fnlayson @ZLEA @Zaereth Do you know what the process of using non-free images are? I've seen articles use them (typically media articles) and typically they're downscaled thumbnails without any higher resolution, but I'm not familiar with the process for using them. If that's not possible then a lot of images here will have to be removed until I can get express permission from Lockheed or if they're uploaded on something like DVIDS. Steve7c8 (talk) 21:41, 28 May 2024 (UTC)
This should be covered at WP:NFC, which gives info without overdoing it.  An NFC image has to be lower resolution and only be used in 1 article, if other valid alternatives are not available. -Fnlayson (talk) 21:53, 28 May 2024 (UTC)
(edit conflict) Steve7c8 The guideline for using non-free images in an article can be found at WP:FAIRUSE.  I don't have too much experience working with non-free images, so I don't know that I would be of much help.  I will say that the article does not list the original sources or copyright holders of the images, so that would complicate the "Identification of the source of the original copyrighted material" part of WP:FAIRUSE. - ZLEA T\C 22:02, 28 May 2024 (UTC)
@ZLEA the Wikimedia page for these images do have the source of the material listed. Do they need to be given in the caption as well in for "fair use"? Steve7c8 (talk) 22:16, 28 May 2024 (UTC)
I'm probably not the best person to guide you through the fair use process.  You might try the WP:Village pump, where you are likely to find users with more experience with fair use. - ZLEA T\C 23:02, 28 May 2024 (UTC)


### Lockheed YF-22
 Steve7c8 (talk) 05:41, 4 November 2024 (UTC)