What's Smoking In This Picture? — Civil Aviation Forum

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What's Smoking In This Picture?

Drinkstrolley From , joined Dec 1969, posts, RR:
Posted (7 years 8 months 23 hours ago) and read 1847 times:

This VS 747 hasn't just touched down (unless it's just flown with a tow truck attached to it for the duration of its flight!) so it's not tyres so what else could it be?

Or is it exhaust from the tow truck?

Cheers!!

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Photo © Piotr Pluciennik

9 replies: All unread, jump to last

Btriple7 From United States of America, joined Sep 2005, 1139 posts, RR: 9
Reply 1, posted (7 years 8 months 23 hours ago) and read 1784 times:

The exhaust was probably coming from the engine. When you start up a jet engine a small puff of smoke can normally be seen. I am not sure why (you need an aviation expert for that explanation).

Regards,
Btriple7

[Edited 2005-09-21 22:52:50]

Just...fly.

Greasespot From Canada, joined Apr 2004, 3050 posts, RR: 22
Reply 2, posted (7 years 8 months 22 hours ago) and read 1776 times:

Start up of the engines. More noticiable on a cooler day.

GS

Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"

Drinkstrolley From , joined Dec 1969, posts, RR:
Reply 3, posted (7 years 8 months 22 hours ago) and read 1756 times:

I'm not doubting you, but I've never seen that!!

Dogfighter2111 From United Kingdom, joined Nov 2004, 1968 posts, RR: 1
Reply 4, posted (7 years 8 months 22 hours ago) and read 1734 times:

Yer, it is just the engines starting.

If you own a Diesel powered engine (in your car) then when you start the engine, a lot of smoke comes out of the exhaust.

Thanks
Mike

B742 From UK - England, joined Mar 2005, 3760 posts, RR: 21
Reply 5, posted (7 years 8 months 22 hours ago) and read 1724 times:

The smoke usualy happens when a engine starts up, it is very visible on cold mornings or evenings at LHR!

Here's some more examples:

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Photo © David Sullivan

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Photo © Jussi Kettunen

Rob!

Btriple7 From United States of America, joined Sep 2005, 1139 posts, RR: 9
Reply 6, posted (7 years 8 months 22 hours ago) and read 1690 times:

Here is another pic. Read the remark:

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Photo © Harri Koskinen

Just...fly.

Drinkstrolley From , joined Dec 1969, posts, RR:
Reply 7, posted (7 years 8 months 22 hours ago) and read 1633 times:

Quoting Dogfighter2111 (Reply 4):
If you own a Diesel powered engine (in your car) then when you start the engine, a lot of smoke comes out of the exhaust.

Mine doesn't!! I've got a Transit van as well with a 180,000 miles on the clock and that doesn't smoke either! (Mind you it's rare to get the f*cker started at all these days!!!)

I had no idea these jet engines smoked when it was cold, makes sense I suppose - hot air into cold etc etc.

Midnights From United States of America, joined Aug 2005, 62 posts, RR: 0
Reply 8, posted (7 years 8 months 22 hours ago) and read 1572 times:

Fuel vapor.....if the conditions are right (temp, humidity and such) this happens quite often. Also, if the pilot or mechanic running the eng. puts the fuel on even a hair too soon you can get a nice stream of vapor out the tailpipe.

Dogfighter2111 From United Kingdom, joined Nov 2004, 1968 posts, RR: 1
Reply 9, posted (7 years 8 months 22 hours ago) and read 1552 times:

Quoting Drinkstrolley (Reply 7):

hehe, well my Step Dads Citroen Xantia does. lol

Mind you, that is 10+ years old. (He doesn't want to get rid of it, because it is so reliable. I wish he would though, the shape isn't all that nice Smile

)

Thanks
Mike

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