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Why do military aircraft not have contrails?

Posted on 9/9/24 at 7:03 pm
Posted by Kingpenm3
Xanadu
Member since Aug 2011
9915 posts
Posted on 9/9/24 at 7:03 pm
Is it just an altitude thing? Are commercial airliners more efficient at altitudes that leave them?

I just saw a big 4 engine plane that I could hear for quite awhile before I finally spotted it. No contrail, not on flight radar. It was headed towards Chennault.
Posted by Aguga
Member since Aug 2021
3966 posts
Posted on 9/9/24 at 7:04 pm to
Because of chem trails
Posted by TBoy
Kalamazoo
Member since Dec 2007
28517 posts
Posted on 9/9/24 at 7:04 pm to
Altitude thing
Posted by Bestbank Tiger
Premium Member
Member since Jan 2005
80695 posts
Posted on 9/9/24 at 7:04 pm to
Probably designed to not have them so the enemy can't follow them as easily.
Posted by Psych23
Member since Aug 2024
731 posts
Posted on 9/9/24 at 7:06 pm to
They do. Contrails are a function of temperature and moisture content of the air.
This post was edited on 9/9/24 at 7:07 pm
Posted by LSUballs
RayVegas LA
Member since Feb 2008
40377 posts
Posted on 9/9/24 at 7:08 pm to
They do have them. But the version of autism they spray is invisible
Posted by Roscoe14
Member since Jul 2021
395 posts
Posted on 9/9/24 at 7:09 pm to
Whether an aircraft causes a contrail depends on a combination of altitude, airspeed, humidity, and temperature. Military aircraft try to avoid that combination because contrails give away their position. Civilian aircraft have no such concerns.
Posted by Kingpenm3
Xanadu
Member since Aug 2011
9915 posts
Posted on 9/9/24 at 7:10 pm to
quote:

They do. Contrails are a function of temperature and moisture content of the air.


So do they leave them just so high in the sky that they aren't visible?
Posted by OysterPoBoy
City of St. George
Member since Jul 2013
44687 posts
Posted on 9/9/24 at 7:11 pm to
They do but their camouflaged.
Posted by flyingtexastiger
Southlake, TX
Member since Oct 2005
1777 posts
Posted on 9/9/24 at 7:13 pm to
As a former fighter pilot, all aircraft potentially leave contrails. As we're flying along in formation, if we notice we are leaving contrails we will use the term "Marking" to denote that we're making it easy for the enemy to see us.

It's pretty much exclusively a function of temperature at altitude, which changes day to day and affects the altitude at which contrails will form.
Posted by Rebel
Graceland
Member since Jan 2005
143751 posts
Posted on 9/9/24 at 7:33 pm to
I grew up on various Air Force Bases throughout the US and Europe.

Military aircraft most certainly have contrails. I saw them everyday.
Posted by Ghost of Colby
Alberta, overlooking B.C.
Member since Jan 2009
15632 posts
Posted on 9/9/24 at 7:47 pm to


Posted by BRich
Old Metairie
Member since Aug 2017
2969 posts
Posted on 9/9/24 at 7:52 pm to

Photo of contrails from dogfights over London during Battle of Britain, 1940.


Photo of B-17 bombing raid contrails. WWII
Posted by Hangover Haven
Metry
Member since Oct 2013
33508 posts
Posted on 9/9/24 at 7:53 pm to
Do most military aircraft fly above 30k feet... I don't know...
Posted by Dirt Booger
Comanche County
Member since Apr 2023
837 posts
Posted on 9/9/24 at 8:28 pm to
quote:

So do they leave them just so high in the sky that they aren't visible?


You realize the atmosphere changes right?
Posted by 777Tiger
Member since Mar 2011
92037 posts
Posted on 9/9/24 at 8:31 pm to
they do, posting on ipad, wish I could post the Growler dick pic from a few years ago
Posted by soccerfüt
Location: A Series of Tubes
Member since May 2013
74706 posts
Posted on 9/9/24 at 8:41 pm to
Paging yogagirl in 3,2,1…
Posted by Tempratt
Member since Oct 2013
15180 posts
Posted on 9/9/24 at 8:42 pm to
Hmmm. I’ve seen commercial airliners going over that had trails and suddenly quit producing them. It looked as if they’d shutdown the engines.

I just figured it was weather related.
Posted by 777Tiger
Member since Mar 2011
92037 posts
Posted on 9/9/24 at 8:44 pm to
as previous posters have said, temp and moisture factor in
Posted by Traffic Circle
Down the Rabbit Hole
Member since Nov 2013
5018 posts
Posted on 9/9/24 at 8:46 pm to
The military uses filters on their aircraft. Civilians like to go unfiltered.
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