petemcewan Posted April 13, 2017 Share Posted April 13, 2017 In my time I've flown many air miles but it is only today that I've heard of cabin air. The air for the cabin apparently passes through the aircraft engine. Critics of this method, have suggested that Organophosphate (from the engine oils) contaminate the air that is breathed by the crew and passengers . Is this true ? Link to comment Share on other sites More sharing options...
Cyclone Posted April 13, 2017 Share Posted April 13, 2017 You expect to find an answer from the expert aircraft engineers who spend their time on the forum? Link to comment Share on other sites More sharing options...
Padders Posted April 13, 2017 Share Posted April 13, 2017 davidathomas. claims to be an airline pilot. maybe he knows. Link to comment Share on other sites More sharing options...
Obelix Posted April 13, 2017 Share Posted April 13, 2017 IT sort of does. You need compressed air to breathe and the best source for that is from the first stage of the engine compressor. This provides high pressure bleed air from the compressor (not the fanwheels). A typical engine being a twin spool or triple spool has bearings but they are further aft than the bleed point and they don't go past any lubrication points on the way. Link to comment Share on other sites More sharing options...
petemcewan Posted April 13, 2017 Author Share Posted April 13, 2017 Obelix, Thanks. Cyclone, I never underestimate the level of expertise one comes across on this excellent Forum. Link to comment Share on other sites More sharing options...
Cyclone Posted April 13, 2017 Share Posted April 13, 2017 There are reports of air contamination though, credible ones. Link to comment Share on other sites More sharing options...
Alcoblog Posted April 13, 2017 Share Posted April 13, 2017 (edited) As a designer/manufacturer of aircraft jet engines myself, there's no way whatsoever I'd allow my AB52.5™'s to breathe the same air as that of the stinky breath passengers when there's acres upon acres of fresh stuff outside. Indeed, if it were the case that engines shared the same air as, for instance, easyJet passengers, the planes wouldn't be allowed to leave the ground due to the aircraft themselves being deemed unairworthy due to avionic intoxication. As I've never heard of 'sobering-up hangars', or 'flight cancelled, due to drunken Jumbo', I find the whole idea of this sharing of air somewhat preposterous. Edited April 13, 2017 by Alcoblog Link to comment Share on other sites More sharing options...
glennpickard Posted April 15, 2017 Share Posted April 15, 2017 Hey Petencewan: the best explanation is the one that Obelix provided. The air that is compressed for cabin circulation does n't get anywhere near where the fuel/air mixture in the engine is lit off. Link to comment Share on other sites More sharing options...
petemcewan Posted April 15, 2017 Author Share Posted April 15, 2017 glennpikard, I do believe so.Thanks. Link to comment Share on other sites More sharing options...
Puggie Posted April 15, 2017 Share Posted April 15, 2017 Pete - It would'nt surprise me if cabin air is cleaner than the air you breath on the ground Link to comment Share on other sites More sharing options...
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