Jet contrails

mikeymouse

If 'contrails' is the right word,
Why are some longer, and stay in the sky for hours,
and others seem to disappear after a few mins?

Timberrrrrrrr

mikeymouse wrote: »

If 'contrails' is the right word,
Why are some longer, and stay in the sky for hours,
and others seem to disappear after a few mins?

Why use quotation marks on the word contrails?

Anyway the sgirt answer is different atmospheric conditions.

mikeymouse

Timberrrrrrrr wrote: »

Why use quotation marks on the word contrails?

Anyway the sgirt answer is different atmospheric conditions.

I was just looking at two planes flying parallel to each other with different contrails (without quote marks),
maybe at different heights?

Timberrrrrrrr

mikeymouse wrote: »

I was just looking at two planes flying parallel to each other with different contrails (without quote marks),
maybe at different heights?

That's basically it

Oscar Bravo

hey mikeymouse, dont worry about using quotation marks, you were only asking a question . Anyway depending on the temperature and humidity at the altitude the contrails form, they may be visible for only a few seconds or minutes, or may persist for hours and spread to be several miles wide, eventually resembling cirrus clouds which you would often see on a fine summers day. Some large aircraft like a 747 can leave a long contrail and sometimes Crow instability occurs when the wingtip vortices interact with contrails from the engines.can appear as like the contrail is all mixed up.

Comhrá

I think it's to do with how much moisture is in the atmosphere and how cold it is at a given height.
If the air is saturated at a particular level, contrails will form and if air is dryer, contrails are shorter, less prominent and even the distance at which they begin to form from the back of the aircraft engines can vary too.

man98

I hope this clears it up for you :pac: :pac: :pac:

mikeymouse

man98 wrote: »

I hope this clears it up for you :pac: :pac: :pac:

I knew the 'word' began with C

vicwatson

mikeymouse wrote: »

I knew the 'word' began with C

But also known as vapour trails

ShaunC

In the pic above you can switch the chemtrails ON or ON

Sam Kade

tippman1 wrote: »

I think it's to do with how much moisture is in the atmosphere and how cold it is at a given height.
If the air is saturated at a particular level, contrails will form and if air is dryer, contrails are shorter, less prominent and even the distance at which they begin to form from the back of the aircraft engines can vary too.

I saw two planes on a clear day one was leaving a contrail and the other plane was leaving none. This explains the reason
http://contrailscience.com/why-do-some-planes-leave-long-trails-but-others-dont/

JCX BXC

ShaunC wrote: »

In the pic above you can switch the chemtrails ON or ON

It's a joke, chemtrails are a conspiracy theory that the vapour from aircraft is not the proven theory of water vapour but infact a mass evil scheme between the major governments to spray the citizens with chemicals for some reason.

mikeymouse

Sam Kade wrote: »

I saw two planes on a clear day one was leaving a contrail and the other plane was leaving none. This explains the reason
http://contrailscience.com/why-do-some-planes-leave-long-trails-but-others-dont/

So the two planes I saw today ,appeared to be the same size,
flying parallel to each other,with different contrails
could have been 10,000 ft apart?

http://giphy.com/gifs/StKcfTc8pKg0w

ShaunC

JCX BXC wrote: »

It's a joke, chemtrails are a conspiracy theory that the vapour from aircraft is not the proven theory of water vapour but infact a mass evil scheme between the major governments to spray the citizens with chemicals for some reason.

In all my years I have never heard that myth
Maybe I live too much of a sheltered life:D

JCX BXC

ShaunC wrote: »

In all my years I have never heard that myth
Maybe I live too much of a sheltered life:D

It's not the most popular of conspiracy theories.

Timberrrrrrrr

ShaunC wrote: »

In all my years I have never heard that myth
Maybe I live too much of a sheltered life:D

Here you go, enjoy

https://en.m.wikipedia.org/wiki/Chemtrail_conspiracy_theory

Steve

The trails are different sizes because the toilet usage varies depending on what time drinks service starts....

/gets coat.


/blue hailstones..

Comhrá

Contrails at takeoff. Tu-204 a / p Yakutsk with temp -45C