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Author
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Topic: Asymetrical Trail | Topic page views:
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Thermit
Tech
Houston, TX
2733 posts, Jul 2000
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posted 09-16-2000 01:17 AM
   
 Submitted by Arkansas Skywatcher 
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Deborah
Take It To The Limit
Flagstaff, AZ
700 posts, Jul 2000
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posted 09-18-2000 10:54 AM
Yep.
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Thermit
Tech
Houston, TX
2733 posts, Jul 2000
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posted 10-09-2000 12:53 PM
What causes this, any takers?
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Nola30
Senior Member
Tuscaloosa AL U.S.A.
41 posts, Jul 2000
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posted 10-09-2000 07:23 PM
I have no idea, but I have seen it many times myself. By the way Tuscaloosa has been sprayed regularly again for a couple of weeks now. They have been spraying at a lower altitude.Could the cooler weather have anything to do with that?
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Falcon
The voice of sanity and reality!
87 posts, Aug 2000
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posted 10-10-2000 04:46 AM
Could be caused by cooler weather.The assymetric trail is probably something as simple as the a/c engines running at slightly different EGT's.
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theseeker
One moon circles
Damnit...I'm a doctor jim
3403 posts, Jul 2000
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posted 10-11-2000 03:28 AM
These typically seen here are descending...possibly a wing-tip vortices from the tail section ????Again camera's are cheap guys....more photos please....comparison....I keep one in the house and one in the car(s).... Damn..I'm dedicated......
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Falcon
The voice of sanity and reality!
87 posts, Aug 2000
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posted 10-11-2000 07:06 PM
Definately not any type of tip vortex. The aircraft wing isn't under sufficient load to produce that in less than almost saturated air. Can only be a difference in engine parameters. Bare in mind a simulated engine failure for training purposes can and will be carried out at various heights.Incidently we were contrailing today at 25000', something to do with heavily saturated air in an extremely low pressure system. Oh and I hadn't turned my Chemtrail switch on.
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Thermit
Tech
Houston, TX
2733 posts, Jul 2000
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posted 10-11-2000 07:47 PM
Thanks for the observation.No switch for you  even if you were military, the switch club  is pretty exclusive 
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Falcon
The voice of sanity and reality!
87 posts, Aug 2000
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posted 10-12-2000 06:47 PM
Even if I was military?I regularly fly in support of various NATO exercises around the world. With various switch throwing involved
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Thermit
Tech
Houston, TX
2733 posts, Jul 2000
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posted 10-12-2000 11:26 PM
quote:
I am a pilot with a civilian company with military connections.
Well since you're braggin' ...fill us in on some of the non-secret aspects of your ops... 
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theseeker
One moon circles
Damnit...I'm a doctor jim
3403 posts, Jul 2000
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posted 10-13-2000 01:12 AM
Falcon,So your in the reserve ? Interesting : "trailing at 25k" As long as I have been around I don't ever recall that exact of a quote from a pilot.. What may be a valid concern, is that the 'parameters' for contrail production may be changing.... a full 5k below the accepted norms.... colder areas are existing more than a mile below previous measured levels ? That info is very beneficial.... BTW the pic looked like a tail section..but on my new monitor, seems engine abnormality is the correct assumption.... comments are welcome....
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Falcon
The voice of sanity and reality!
87 posts, Aug 2000
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posted 10-16-2000 06:13 PM
No, i'm not in the reserve.The trailing at 25k was in Europe in an extremely cold airmass of very low pressure. 5k below the "accepted norm" level? Our aircraft regularly trail from 27 or 28k upwards, why is 30k the "accepted level"?
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theseeker
One moon circles
Damnit...I'm a doctor jim
3403 posts, Jul 2000
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posted 10-16-2000 11:06 PM
30k ?I don't know , that is the most common number that I have seen for contrail production.... I would swear I have seen them lower much lower but trying to visually judge distance from the ground is tough..... I use the visible distinctions of the aircraft myself, when the craft is the size of a dime, and trailing I wonder.... T/S
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