Talk:Jet engine performance

message: Gross thrust calculation has to be wrong:
The expression w8 * V8 / g  doesn't have the right dimensions. Since Cx is withou dimension, the dimension of w8*V8/g has to  be mass*distance/time^2 (=force), but w8*V8 is already mass/time * distance/time = mass*distance/time^2, so multiplying by g gives incorrect dimensions.
I suspect there is some confusion about lbf (pound force) and lb (pound mass) somewhere causing this. If we assume the worked example yields the correct result, I would guess that the expression for V8^2 is also wrong, with the two errors cancelling each other out. Either that, or the result of the worked example is wrong.
Avl (talk) 13:28, 17 June 2017 (UTC)
thread_title: Error in worked example

message: Disagree. It probably needs a less technical, more explanatory, introductory para, admittedly, but the devil is definitely in the details. Greglocock 07:27, 31 December 2006 (UTC)
thread_title: Technical

message: :Image:Slamacceleration.gif is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
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BetacommandBot (talk) 05:42, 24 January 2008 (UTC)
thread_title: Fair use rationale for Image:Slamacceleration.gif

message: :Image:Slamaccelerationchic.gif is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is  other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page.  Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot (talk) 05:43, 24 January 2008 (UTC)
thread_title: Fair use rationale for Image:Slamaccelerationchic.gif

message: This article is just too much gibberish and not a single explanation. I'm just confused, this needs some heavy editing (I don't do it because i don't know nothing about this)--MakE shout! 18:48, 14 November 2008 (UTC)
thread_title:  Oh My God 

message: All revision of this page have been transwiki imported to v:Jet engine performance.  --mikeu talk 13:24, 30 June 2009 (UTC)
thread_title:  transwiki 

message: This article now has references added and a positive appraisal from someone with a geuine interest in the subject matter of the article. Whilst the article may not be to everyone's taste I believe it should be recognised as a valuable addition to wikipedia(It answered a couple of long-lingering questions for me). Perhaps a stumbling block is it being subject matter that pays wages/salaries rather than of purely hobby or intellectual interest.
If anyone is adamant it needs changes in line with wikipedia guidelines/suggestions please make specific demands which can be considered by anyone prepared to follow them up.
I believe it is time to remove the "multiple issues" header block from the article.Pieter1963 (talk) 13:38, 17 March 2014 (UTC)
thread_title: Time to move forward

message: "This article.. ..may not reflect the encyclopedic tone..." It follows the tone used by reliable sources so must be ok. The header is too vague. Any feedback has to be specific with examples to give anyone a fair chance at responding.
"  written like a manual or guidebook" If the no-textbook rule has to be followed then move article to Wikiversity. If it doesn't need to be followed then it doesn't need the header.Pieter1963 (talk) 21:17, 9 May 2016 (UTC)
thread_title: Multiple issues header