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Supersonic shock

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Old 8th Mar 2019, 02:10
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Supersonic shock

Brilliant!
Shock waves
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Old 8th Mar 2019, 03:53
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Any sufficiently advanced technology is indistinguishable from magic. Clarke's First Law:




Says they are real T-38s in the air - as opposed to models in a wind tunnel.

Google - Air-to-Air Background Oriented Schlieren - or AirBOS.

https://technology.nasa.gov/patent/TOP2-271

"First, images are obtained of a visually textured background pattern from an appropriate altitude. Next, a series of images are collected of a vehicle in flight below the observer vehicle and over the same spot on the ground that serves as a background pattern. Shock waves are deduced from distortions of the background pattern resulting from the change in refractive index due to density gradients. The invention requires special software to create the schlieren images."

I would dismiss this as utterly implausible and fake other than that I already know of two quite similar seeming things that are both utterly implausible and real - namely CT scans, and MRI scans.

Last edited by jimjim1; 8th Mar 2019 at 04:36.
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Old 8th Mar 2019, 11:17
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On this video you can see a slow motion of a shockwave from a WW2 tank firing in high definition. The first one is at 6m10s.
Pretty cool.
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Old 8th Mar 2019, 12:12
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First Air-to-Air Images of Supersonic Shockwave

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Old 8th Mar 2019, 19:12
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Thrust SSC at just over M1, look at the background just above the car.
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