2006-11-15 23:30:09 · 12 answers · asked by katkat 1 in Cars & Transportation ➔ Aircraft
The lines are called Contrails. They are created due to when the air at high altitudes is taken into the engine, condensed, and super heated. The air then exits the engine and due to very low air pressure expands very quickly causing the water vapor to to cool very very quickly... in an out side air temprature of about -45 degrees F. This causes the vapor trail you see from the ground... miniture streamline clowds.
2006-11-15 23:42:31 · answer #1 · answered by Dport 3 · 1⤊ 0⤋
They are known as contrails. This happens when the exhaust from the engines, which is at high heat, mixes with the air which is at a very cold temperatures.
Here is a really cool picture showing contrails.
http://www.airliners.net/open.file/1000914/M/
2006-11-16 09:10:16 · answer #2 · answered by ? 7 · 0⤊ 0⤋
its called a jet trail and is ice . Water in the exhaust produced by burning kerosene in the engine hits the sub-zero temperature air and turns instantly to ice.
2006-11-16 07:40:28 · answer #3 · answered by ustaadji 2 · 0⤊ 0⤋
Jet-line
2006-11-16 07:37:35 · answer #4 · answered by vio_prince 4 · 0⤊ 0⤋
They are called Contrails and are caused by the hot byproducts of combustion in the engine mixing with the freezing (-60°) air. It's like in cold climates where cars have exhaust fog, it's just the moisture in the hot exhaust hitting the cold air. Like seeing your breath on a cold morning.
Some conspiracy theorists think they are made from some sort of government chemical testing. These people refer to them as "chemtrails" and there are sites dedicated to these topics. Trust me, these people are nuts, like I said, it's just like seeing your breath in cold air.
2006-11-18 01:46:23 · answer #5 · answered by Geer 1 · 0⤊ 0⤋
It is called a contrail. It is made of ice that condensed in the warmer air behind the jet exhaust cone and then froze.
2006-11-16 14:35:41 · answer #6 · answered by Jason 5 · 0⤊ 0⤋
If you mean the line in the sky, it's called a 'vapour trail' and is composed of just that. Water vapour.
2006-11-16 09:23:22 · answer #7 · answered by shannahjill 1 · 0⤊ 0⤋
Are you asking about a small plane referred to as a sky writer, or a jet as in a commercial plane?
2006-11-16 07:39:14 · answer #8 · answered by Bullett Bob 2 · 0⤊ 0⤋
Check the source listed below. That's the best answer!
2006-11-16 07:43:07 · answer #9 · answered by Eat At The Y 4 · 0⤊ 0⤋
It's a vapour trail and it's mostly avaition gas exhaust and steam
2006-11-16 07:37:53 · answer #10 · answered by Anonymous · 0⤊ 0⤋