Why Aircraft with Jet Engines Form Cloud Trails

[Cyrus]

I always thought that it is not water in exhaust gases that provides nucleation sites, but soot from the not burnt fuel.

If you have ever seen plane fyling diretly in your direction (or directly from you) you have probably seen that exhaust gases are brown - that's a soot I am talking about. It is not visible when the exhaust is seen from the side, that's practical application of Lambert-Beer law

http://asd-www.larc.nasa.gov/GLOBE/science.html

 

[HowlerMonkey]

 

[cjl]

That's a neat picture, but was it worth the thread necromancy?

 

[HowlerMonkey]

Yes, it was worth it.

Thanks for contributing to the necromancy yourself.

 

[DaveC426913]

necropostage.

necromancy is strictly against forum rules and violators will be cursed.

 

[Jobrag]

It is worth pointing out that jet plane exhaust is mostly water...

I beg to disagree a jet engine exhaust is mostly nitrogen.

 

[DaveC426913]

For its length, this is an astonishingly confusing post.

It is worth pointing out that jet plane exhaust is mostly water...
I beg to disagree a jet engine exhaust is mostly nitrogen.

At face value, you are pointing out that jet plane exhaust is mostly water and, at the same time, disagreeing that it is mostly nitrogen.



1]

It is worth pointing out that jet plane exhaust is mostly water...

I think this is not meant to be your words; I think it is a quote of https://www.physicsforums.com/showpost.php?p=2310855&postcount=14".
Took about ten minutes of my life to figure that out. Please use the quote feature.

2]

I beg to disagree a jet engine exhaust is mostly nitrogen.

You are disagreeing that a jet exhaust is mostly nitrogen. Since no one ever mentioned nitrogen, it makes no sense for you to disagree with something never said.

So I'm going to guess this is a punctuation thing. I think what you meant to say was:

I beg to disagree; a jet engine exhaust is mostly nitrogen.

That took another ten minutes of my life to figure out. Please use proper punctuation.


OK, that's all sorted out. Now...


What makes you think it's comprised of nitrogen? Back up your claim.

 

[russ_watters]

Nitrogen in, nitrogen out. The atmosphere is 80% nitrogen. It's a necronitpick.