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#16638 - 07/21/11 06:38 PM Final Touchdown of Shuttle Atlantis (iconic photo)
MicroMatTech3 Offline


Registered: 08/04/09
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#16664 - 07/23/11 09:13 AM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: MicroMatTech3]
alternaut Offline

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Registered: 08/04/09
You might also enjoy Welcome Home, Atlantis.
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#16666 - 07/23/11 10:21 AM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: alternaut]
MicroMatTech3 Offline


Registered: 08/04/09
Thank you. I would have missed that, and would not have learned about the condenstaion collar (photo 21).
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#16668 - 07/23/11 10:38 AM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: MicroMatTech3]
alternaut Offline

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Registered: 08/04/09
You're welcome! And yes, I too noticed that condensation collar, and don't recall a better image of the phenomenon. Recently I have become a fan of The Atlantic's InFocus Gallery, always good for a relaxed 10-20 minutes with each new installment. I particularly appreciate the current series on World War II.
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#16694 - 07/25/11 02:51 PM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: MicroMatTech3]
Virtual1 Offline


Registered: 08/04/09
Loc: Iowa
Originally Posted By: MicroMatTech3
Thank you. I would have missed that, and would not have learned about the condenstaion collar (photo 21).


I would pay more than a quarter for a chance to play #6.

Yep the collar very briefly occurs when an object transitions to supersonic. There's a popular picture of an F16 (I think) with that collar about midway down the body that's all over the internet. One of those "perfect moment" pictures.
Here's one I think. You're basically shaking the water out of the air with the shockwave.
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#16696 - 07/25/11 03:59 PM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: Virtual1]
MacManiac Offline
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Registered: 08/04/09
Loc: Paradise....on the central Ore...
That would be an F/A-18 Hornet......possibly one that I myself used to fly.
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#16706 - 07/26/11 02:08 PM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: Virtual1]
tacit Offline


Registered: 08/03/09
Loc: Portland, Oregon, USA
In the right atmospheric conditions, the condensation collar can turn to ice crystals. In the right conditions and with the sun in the right place, the result is a rainbow around and behind the aircraft. The best example I've ever seen is this rainbow surrounding an F-22 Raptor as it goes supersonic.
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#16711 - 07/26/11 05:16 PM Re: Final Touchdown of Shuttle Atlantis (iconic photo) [Re: tacit]
artie505 Online


Registered: 08/04/09
Originally Posted By: tacit
In the right atmospheric conditions, the condensation collar can turn to ice crystals. In the right conditions and with the sun in the right place, the result is a rainbow around and behind the aircraft. The best example I've ever seen is this rainbow surrounding an F-22 Raptor as it goes supersonic.

Both cool and awesome!
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Moderator:  alternaut, cyn