Aerotoxic Syndrome

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Author	Topic: Aerotoxic Syndrome
Eboy Member	posted 02-11-2008 06:35 AM quote: Bled off from the engine - and, therefore, known as 'bleed air' - before the fuel is injected and burnt, bleed air is piped back to the fuselage where it is cooled down and then pumped into the cabin. Crucially and extraordinarily, bleed air is not filtered at all. Whatever chemicals and toxins it may have picked up from the engine, pass straight into the aircraft where they are unwittingly inhaled by pilots, cabin crew and passengers alike. So, what chemicals are they? It's not aircraft fuel that is the problem - after all, bleed air is removed from the engine before combustion - it is the oil lubricating the engine. http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=513209&in_page_id=1770 IP: Logged
Robert Espy Member	posted 02-11-2008 09:49 AM quote: Originally posted by Eboy: http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id= 513209&in_page_id=1770 I think all of the technical facts he states are true, but his alarmism is highly suspect. IP: Logged
KGB Moderator	posted 02-11-2008 10:01 AM I'm pretty sure the massive motor and fan driving my swamp cooler is lubricated, and the air it pumps is completely unfiltered and goes straight into the lungs of my delicate tube dogs (whose cardiovascular systems are more delicate than our own.) No signs of harm so far; dachshunds normally act a little brain-dead. IP: Logged
DaveL Moderator	posted 02-11-2008 11:33 AM Uhh, how much contact does the air have with the lube oil anyway? I mean, lubrication systems are pretty much closed. Sure, there's some leakage, but I have a hard time believing its appreciable compared to the volume of air going through a jet engine. Also, isn't the bleed stream coming off of the compressor section, which is upstream of most of the lubricated parts of the engine? Frankly I'm more concerned about catching the flu from the other passengers. IP: Logged
John LeBlanc Member	posted 02-11-2008 12:01 PM DaveL, you are correct- the bleed air comes from the compressor section. Given that the air source is usually several miles from the surface there's no need for filtering because there's nothing up there to filter up. The problem with air quality aboard an airliner has nothing to do with the bleed air and everything to do with the fact that the airlines have been allowed to cut the flow rate and recycle cabin air to the point where there is nowhere near enough fresh air to be breathable. ------------------ "Deer aren't capable of that kind of thinking. All they care about is what am I going to eat next, who am I going to f*** and can I run fast enough to get away. They are very much like the French." - Ted Nugent IP: Logged
llamas Member	posted 02-11-2008 01:08 PM If the engine mainshaft lube is getting into the bleed air that ventilates the cabin at a rate that is of concern for the health of the passengers - then their health concerns are far-less-significant than the more-pressing issue, namely, that that engine is shortly going to stop turning. Bunch of nonsense. Note that the author is promoting his book on this topic. llater, llamas ------------------ . . . a truly bad and evil man. So bad and evil that he's banned by Kim du Toit. "All things are ready, if our minds be so." King Henry V, Act 4, scene 3 "I hope that those responsible have been sacked. And replaced by Llamas." - Glenn Harlan Reynolds IP: Logged

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