Comments on: Chemical Analysis of Contrails http://contrailscience.com/chemical-analysis-of-contrails/ The Science and Pseudoscience of Contrails and Chemtrails Sat, 04 Feb 2012 15:04:06 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Marcelhttp://contrailscience.com/chemical-analysis-of-contrails/comment-page-1/#comment-97197 Marcel Fri, 25 Nov 2011 19:34:44 +0000 http://contrailscience.com/?p=13#comment-97197 "I seem to recall a few years ago a RR engine was pulled off a wing having achieved the amazing life of 20,000+ hours of service" Wonder if any of the turbine blades were ground by my father - he worked at RR Hillington plant near Glasgow,Scotland from 1952 to 1984. “I seem to recall a few years ago a RR engine was pulled off a wing having achieved the amazing life of 20,000+ hours of service”
Wonder if any of the turbine blades were ground by my father – he worked at RR Hillington plant near Glasgow,Scotland from 1952 to 1984.

]]> By: MikeChttp://contrailscience.com/chemical-analysis-of-contrails/comment-page-1/#comment-87558 MikeC Thu, 27 Oct 2011 22:47:53 +0000 http://contrailscience.com/?p=13#comment-87558 I dont' think you can say too much about metal in the samples at all - the overall quantities are miniscule, and the various mechanical components of the engines do wear - even with the best technology and lubrication available - that's jsut a fact of life in mechanical systes. I seem to recall a few years ago a RR engine was pulled off a wing having achieved the amazing life of 20,000+ hours of service - which is, of course, just flying hours and not maintenance & taxying (at least I don't think it includes taxiing) - but jet engines used to be routinely overhauled at 6000 hours operation. Tehse days the various modules are more likely to receive their own overhauls rather than the engine as a whole, plus there's all the fuel related components such as pumps, meters, valves, etc all of which are cosntantly wearing and will have their own overhaul/maintenance lives as determined by how they wear. I dont’ think you can say too much about metal in the samples at all – the overall quantities are miniscule, and the various mechanical components of the engines do wear – even with the best technology and lubrication available – that’s jsut a fact of life in mechanical systes.

I seem to recall a few years ago a RR engine was pulled off a wing having achieved the amazing life of 20,000+ hours of service – which is, of course, just flying hours and not maintenance & taxying (at least I don’t think it includes taxiing) – but jet engines used to be routinely overhauled at 6000 hours operation.

Tehse days the various modules are more likely to receive their own overhauls rather than the engine as a whole, plus there’s all the fuel related components such as pumps, meters, valves, etc all of which are cosntantly wearing and will have their own overhaul/maintenance lives as determined by how they wear.

]]> By: captfitchhttp://contrailscience.com/chemical-analysis-of-contrails/comment-page-1/#comment-87327 captfitch Thu, 27 Oct 2011 02:06:28 +0000 http://contrailscience.com/?p=13#comment-87327 Great article except there was no mention at all regarding what the engines were on the aircraft. Who cares if it was a 75 or a DC8. PLus I was suprised at the amount of metal present. Those engines are constantly eating themselves or the fuel storage method is poor. Great article except there was no mention at all regarding what the engines were on the aircraft. Who cares if it was a 75 or a DC8. PLus I was suprised at the amount of metal present. Those engines are constantly eating themselves or the fuel storage method is poor.

]]> By: Uncinushttp://contrailscience.com/chemical-analysis-of-contrails/comment-page-1/#comment-87167 Uncinus Wed, 26 Oct 2011 14:13:03 +0000 http://contrailscience.com/?p=13#comment-87167 http://www.coas.oregonstate.edu/facultypages/twohy/TwohyGRL98.pdf Interesting stuff - now there's some real contrail science. http://www.coas.oregonstate.edu/facultypages/twohy/TwohyGRL98.pdf

Interesting stuff – now there’s some real contrail science.

]]> By: Weinlockhttp://contrailscience.com/chemical-analysis-of-contrails/comment-page-1/#comment-87142 Weinlock Wed, 26 Oct 2011 13:03:57 +0000 http://contrailscience.com/?p=13#comment-87142 Uncinus, I can't post a link, about contrail chemistry. It is form Cynthia H. Twohy and Bruce W. Gandrud in 'GEOPHYSICAL RESEARCH LETTERS, VOL. 25, NO. 9, PAGES 1359-1362, MAY 1, 1998 Uncinus, I can’t post a link, about contrail chemistry. It is form Cynthia H. Twohy and Bruce W. Gandrud in
‘GEOPHYSICAL RESEARCH LETTERS, VOL. 25, NO. 9, PAGES 1359-1362, MAY 1, 1998

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