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1/25/2018 7:38:29 AM
Posted: 5/30/2003 12:46:12 PM EST
Is the exhaust of the SRBs toxic? What are the main components of the exhaust gasses? What are the signs and symptoms of exposure to this exhaust? Any help would be greatly appreciated. For those unfortunate enough to follow thw progress of Wiggy762's headaches, this is the next area of concern as I used to live a few miles away from the hardstand test facility used by Morton Thiokol. This site is in the Utah desert between I-80 and Dugway Proving grounds. I was witness to several (more than 10) static tests of the SRB in the mid 1980's and rode through episodes of fogging following these tests. My father, who was there with me, has also had severe headaches and has had brain surgery in an attempt to alleviate the pain....to no avail. Thanks in advance.
Link Posted: 5/30/2003 12:49:31 PM EST
Newsgroups: sci.space.history From: Henry Spencer Subject: Re: Space Shuttle Propellants Date: Tue, 11 Nov 1997 17:14:05 GMT In article <3467931B.3D6E@ast.lmco.com>, Jeff Lewis wrote: >> With regards to the space shuttle, what are the exhausts emitted... > >Main engines, SSMEs, produce water steam, reacting LOx and LH2. There's also a lot of unburned H2 in the exhaust. Plus traces of other things; in particular, any rocket engine running within the atmosphere will generate some oxides of nitrogen. >The >solids produce some burnt rubber kind of stuff plus chlorides, from >burning basically tire rubber and ammonium perchlorate... It's more complicated than that. The solids' exhaust is a real witches' brew. The ammonium perchlorate oxidizer decomposes into, mostly, nitrogen, water, oxygen, and hydrogen chloride (which becomes hydrochloric acid if dissolved in water). The rubber fuel, whose overall composition is roughly CH2, burns with some of the oxygen to give CO2 and more water. The powdered aluminum burns with more of the oxygen to give Al2O3, which quickly condenses into solid particles, which is what makes the SRB exhausts so smoky. However, this process is complicated and disorderly, and all kinds of things come out of it in smaller quantities. >...The OMS react N2H4 and N2O4, so probably produce nitrogen, >hydrogen, oxygen, ammonia, water... Actually the fuel is not hydrazine but MMH, CH3NHNH2, so there's also CO2 and other odds and ends in there. There won't be any significant amount of oxygen in the exhaust, it all gets used up. Assorted poorly-known weird things form in small quantities, especially during startup and shutdown when temperatures are lower. -- If NT is the answer, you didn't | Henry Spencer understand the question. -- Peter Blake | henry@zoo.toronto.edu
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Link Posted: 5/30/2003 12:54:42 PM EST
Also, this report may have relevant information for you. It's a PDF, 150+ pages. Shuttle emission info on page 27. That's the page in the text, not the 27th page of the document. You'll see what I mean. [url]http://ax.losangeles.af.mil/axf/studies/docs/soilvedsmdso.pdf[/url]
Link Posted: 5/30/2003 1:01:29 PM EST
Flipping through the rest of the stuff that Google turned up, it looks as if the guy you really need to talk to is Henry Spencer in the Zoology department at the University of Toronto. He keeps popping up all over the place with a lot of detailed chemistry on this subject. Good luck.
Link Posted: 5/30/2003 1:03:54 PM EST
Thanks a bunch, fellow Jayhawker! Is the Mass. St. Deli still as good as ever?
Link Posted: 5/30/2003 1:07:00 PM EST
You know it, brother. Although, I tend to haunt Free State Brewery more than anyplace in Larry. Good luck with your ailment. I hope you can get some relief soon, whatever the cause.
Link Posted: 6/2/2003 7:58:19 AM EST
Dzl-Benz, I got a great email reply from the professor you found. He seems to think that exposure to the exhaust is a really bad thing. Guess I;ll need to start finding if any others are affected and see what happens. Thanks for your help.
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