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  #1  
Old 08-07-2019, 02:53 AM
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Default Interesting hot air diffraction flow photo detail?

Looking through some shots I took of my buddy Steve flying our -8, and spotted an interesting visual display of the hot-air exit flow from the bottom of the cowl (and the exhausts).

Just something you don't usually see, and is down to light refracted differently through the varying temperature bits of air. I think the background helps make it obvious in this shot.

A crop from the image.



The full shot.

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Last edited by EdH : 08-08-2019 at 04:22 AM. Reason: Changed Diffracted to refracted - thanks Erich
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  #2  
Old 08-07-2019, 11:47 AM
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Nice looking 8!
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  #3  
Old 08-07-2019, 04:39 PM
Marc Bourget Marc Bourget is offline
 
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control said: "I would have expected more turbulence"

I don't think the exhaust has the density/mass to oppose the slipstream and generate significant turbulence.]

FWIW
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Old 08-07-2019, 06:41 PM
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Very cool picture!

I cannot tell what the exhaust is doing - the background changes at precisely the wrong spot.
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Old 08-07-2019, 06:59 PM
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Very neat. Very similar in nature to being able to "see" things you never imagined in a sound "image".
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Old 08-07-2019, 08:32 PM
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Cool, good eye. Minor correction: the light is being refracted rather than diffracted. Diffraction is something else.

Erich
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Old 08-07-2019, 08:44 PM
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there goes 75% percent of the available thermal energy
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Old 08-08-2019, 04:21 AM
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Quote:
Originally Posted by erich weaver View Post
Cool, good eye. Minor correction: the light is being refracted rather than diffracted. Diffraction is something else.

Erich
Thanks Erich - will tweak the first post.
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