tag:blogger.com,1999:blog-8118460937928958757.post395012227036196677..comments2024-01-17T13:23:35.896-05:00Comments on aeroturbopower: LEAP-X striking back?Unknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8118460937928958757.post-81943135511103200522011-06-20T05:27:17.136-04:002011-06-20T05:27:17.136-04:00Thank you, Daniel! As you are, I am unconvinced ab...Thank you, Daniel! As you are, I am unconvinced about CFM's claim. The email from AF probably came before CFM changed their design, so the difference might be smaller now. Maybe the real difference now is maintenance costs, with 2 more HPC stages and 4 more LPT stages in the LEAP.aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-18666359453501584292011-06-20T02:47:54.408-04:002011-06-20T02:47:54.408-04:00Interesting.
I remain unconvinced at CFM's cl...Interesting.<br /><br />I remain unconvinced at CFM's claim that the Leap will have a 1% better fuel burn than P&W GTF.<br /><br />As you commented on my previous article,<br />http://www.aspireaviation.com/2011/05/10/pw-purepower-engine-vs-cfm-leap-x/<br /><br />I have noted that CFM announces a 15% explicit fuel burn saving target whereas P&W announces a 16% goal.<br /><br />On fuel burn, I'm also told that the PW1524G has exceeded its 16% SFC saving target.<br /><br />An employee working at Air France e-mailed me a month ago that the A320neo equipped with PW GTF will have a 5% DOC advantage, but the CFM Leap only has 2%.<br /><br />And given P&W GTF's upgrade path & growth potential, by simply raising the gear ratio to 5:1 or running the core hotter should ceramic matrix composite (CMC) technologies mature by 2018, the GTF will easily outperform the Leap regarding fuel burn.Daniel Tsanghttp://www.aspireaviation.comnoreply@blogger.com