chris beacham
Registered Senior Member
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Who says? You?
I can explain the technicalities of how a fuel-burning craft produces persistent contrails. Can you explain how a non fuel-burning one does? Where does the water wapor come from?Originally posted by chris beacham
Hans:
"Isn't this called spamming? Opening a thread to advertize a CD of yours for sale?"
Take a vote now. I don't need to post pics here you know....
"Only fuel-powered craft produce persistent contrails.
Who says? You?
Because it doesn't. The shock-wave of a fast object can create a contrail, because the sudden compression and decompression of the air may cause water vapour to temporarily condense. However, once the shock-wave has passed, stasus quo is restored, and the mist turns back to the vapour state. Only exception from this is when the moisture in the air is at the saturation point, but this is an unusual and unstable(but not impossible) situation in nature.Originally posted by chris beacham
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Hans:"Can you explain how a non fuel-burning one does?
No.
Well, wings and tail sections can be difficult to see when a craft is 5-10 kilometers up and even farther away. Contrails normally form at altitudes above 10,000ft.Originally posted by chris beacham
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That said, I do not believe that these are 'contrails' in the conventional sense. I am talking about the blue sky image on my site (which incidentally still has the craft sitting inside it), but for want of another description at this point I will call them that. I have witnessed 'contrails' of white, yellow, pink,red and black that appear to me to be more of a protective shield in our atmosphere than anything else. The more spectacular examples I have seen is when a black trail 'lights up' to a glow. I have much of this activity video recorded (although not on the CD...). This is an area I want to concentrate on, when the present Scientific analysis of my material is completed.
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Unless it involves a craft with no wings or tail section.