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PM is mentioned as an abbreviation in this article with no explanation of what it means.
I suspect in this context it means Powder metallurgy is used as a method of fabrication for these hi-tech components since this allows the use of exotic materials like metal matrix composites. I hesitate to put this in the article until someone else can confirm this or find a suitable citation. I am aware that Rolls Royce has explored this area of technology however. Soarhead77 ( talk) 11:35, 27 October 2008 (UTC)
Why is this article telling BS about simple maths? 20.000lbs doesn't make 90kN
RR Doc released in 2009 is quite more reliabe than this fanboyism article, http://www.rolls-royce.com/Images/EJ200_tcm92-6698.pdf
its like the EJ2xx, never developped, but here its big "Name"!
regards —Preceding unsigned comment added by 77.196.104.72 ( talk) 11:15, 10 August 2010 (UTC)
Indeed, the unit conversion is inaccurate, which makes the figures misleading. To the nearest 250lbf, 60kN and 90kN make 13,500lbf and 20,250lbf respectively. http://www.convertunits.com/from/kilonewtons/to/pounds Amended accordingly. 86.166.16.46 ( talk) 12:24, 8 March 2016 (UTC)
Why are an odd number of engines being delivered when each plane requires 2 engines? —Preceding unsigned comment added by 92.24.91.43 ( talk) 23:19, 4 November 2009 (UTC)
> The announcement of this agreement confirmed that France had chosen not to proceed as a member of the project. One issue was French insistence that the aircraft be powered by the SNECMA M88
This is not true. France was sacked because they demanded planes with potential for flat-top carrier use naval modifications, but the british and the germans refused to carry the app. 10% weight and cost penalty.
Now the british must buy single-engined high risk, belated F-35s, because the EFA-2000 is not carrier capable and the french Rafale suffers from inferior domestic radar-comms set. Europe has always been a collection of stupids. 82.131.210.163 ( talk) 18:40, 18 December 2009 (UTC)
86.8.177.103 ( talk) 19:05, 24 July 2021 (UTC)
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The reason is simple: The "developed from=", "developed into=" and "variants with their own articles=" parameters are for engines that have separate articles. The Rolls-Royce XG-40 doesn't have a separate article, and thus should not be listed there. It is mentioned in the Lead, and in the first sub-section of the article, and that is sufficient. I'm not arguing whether or not the XG-40 should have a separate article, but unless it does, we don't list it in the infobox. Thanks. - BilCat ( talk) 17:55, 12 October 2018 (UTC)