Wierd Cloud & Airplane Pic

[accadacca]

Source: http://www.airliners.net/open.file/1091105/L/

[rockgremlin]

Photoshopped...

[PunchKing]

Satan is going to get that plane fo sure. Faster we must go faster!!!

[accadacca]

Supposedly it ain't photoshop?

Check the link: http://www.airliners.net/open.file/1091105/L/

[bruce from bryce]

from a former Air Force weatherman, those are probably what we call 'vortex' clouds. This was probably during a takeoff or landing and is caused by exhaust exiting from the back of the engines.

I've seen this personally in Alaska during very foggy conditions. LOL

[RedMan]

I've seen similar to that behind many aircraft.
Mostly military since they have a thing for clouds.

Its a great shot, I doubt it is photoshopped.

[moabfool]

from a former Air Force weatherman, those are probably what we call 'vortex' clouds. This was probably during a takeoff or landing and is caused by exhaust exiting from the back of the engines.

I've seen this personally in Alaska during very foggy conditions. LOL

Very close, but the vortexes are caused by the wings and not so much by the engines. Both engines are rotating in the same direction, yet the vortexes are spinning opposite to each other.

The formation is result of the high and low pressure forces that create the lift that allows the plane to fly. The curvature of the wing causes the air to travel further as it passes across the top of the wing and creates an area of lower pressure as compared to the air passing under the wing. The air is naturally going to try to equalize its self, so a certain amount of air will move from the area of high pressure to the area of low pressure. The place it tries to do this is at the wing tips. The result is the counter rotating vortex structure shown in the picture.

[DickHead]

The vortices are caused by the wake turbulence, not the engines.
Not that I would know anything about wake turbulence, its formation, nor its effects on other aircraft.....

A jet engine doesn't send its 'turbulence' out in a swirl or votice...a jet produces straight line thrust. The Turbulence comes from the wing tips of the aircraft, and is more severe depending on aircraft weight or configuration (B757's have earned a special wake turbulence class, as theirs is so severe).
To create the effect in the photo, the B777 must have just been skimming along in the cloud for awhile and then come out of the cloud when the picture was taken.
But I'm no expert Air Force Weatherman or anything....