Contrail Shadows

[jungle]

http://i237.photobucket.com/albums/ff249/jungle375/IMG_2074.jpg

[superdiver]

cool shot...what exactly makes these trails? (I mean besides the plane...lol)

[jungle]

cool shot...what exactly makes these trails? (I mean besides the plane...lol)

http://en.wikipedia.org/wiki/Contrail

[Desertraptor]

Very cool shot

[superdiver]

I am assuming its from condensation from the plane, but what causes the condensation and from what parts...

[jungle]

I am assuming its from condensation from the plane, but what causes the condensation and from what parts...

The engines on a large transport aircraft may burn 2-3,000 gallons an hour or more total, this produces a lot of water vapor, it is almost instantly frozen as it exits the engines into the sub -50 C air. In addition, water vapor in the atmosphere may exist in a supercooled state and be suddenly frozen when the ice crystals or very small exhaust particulates cause a freezing trigger.
It is not uncommon to see contrail(s) form fairly large cirrus clouds over time, this is largely dependent on the relative humidity of the air aloft.

The wiki article is only partly correct.

[RCoulter]

Now thats a creative photo! Nice job :)

[PhotosGuy]

That's pretty interesting!

[FatAlbert]

Jungle,
As always something different and interesting, great photo.

FA

[superdiver]

The engines on a large transport aircraft may burn 2-3,000 gallons an hour or more total, this produces a lot of water vapor, it is almost instantly frozen as it exits the engines into the sub -50 C air. In addition, water vapor in the atmosphere may exist in a supercooled state and be suddenly frozen when the ice crystals or very small exhaust particulates cause a freezing trigger.
It is not uncommon to see contrail(s) form fairly large cirrus clouds over time, this is largely dependent on the relative humidity of the air aloft.

The wiki article is only partly correct.


See, I would have never guess frozen water vapor! I know that it was somewhat dependent on moisture in the air... thanks... learn something new everyday!