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Old 04-29-2021, 03:55 AM   #1 (permalink)
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Three dimensional speed/pressure tracking

I've never seen anything like this before.



More details here.



I'd imagine it's a lot of money, but it would be fun to play with on an empty road, using perhaps a tracking car in an adjoining lane.

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Old 04-29-2021, 05:27 AM   #2 (permalink)
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Clever, but, I would imagine the camera has to be stationary relative to the measurement plane. And then you need a stationary car which means a wind tunnel, I suppose it could still be useful leaning out a window or sunroof. At that point it makes sense to just do CFD.

edit: but with some development of the tracking camera that could work out sizes, then maybe a stationary camera wouldn't be necessary.

Julian, this may be of interest


Last edited by AeroMcAeroFace; 04-29-2021 at 05:59 AM.. Reason: Trying to embed youtube videos
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Old 04-29-2021, 06:10 AM   #3 (permalink)
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Interesting, but I am not sure what use it would be? He does a lot of stuff that is race based but I often struggle to see the relevance for road cars.
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Old 04-29-2021, 06:31 AM   #4 (permalink)
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You did write a book on modifying cars for track, I haven't read it so I don't know if it would fit in.
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Old 04-29-2021, 02:13 PM   #5 (permalink)
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https://www.streamwise.ch/procap/

The system uses optical tracking, similar to Microsoft Kinect. The three white balls on the wand are prolly tracking dots.


[ibid]

They are capturing information in three dimensions and mapping it in two. Averaging multiple passes from the looks of it.
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Old 04-29-2021, 04:52 PM   #6 (permalink)
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Quote:
Originally Posted by AeroMcAeroFace View Post
You did write a book on modifying cars for track, I haven't read it so I don't know if it would fit in.
The testing techniques that can be used on road cars can also be used on track cars, but vice versa isn't necessarily useful.

Re a yaw indicator. I've been thinking about it and a weather vane with a linear voltage output would be simpler than the approach shown in the video.

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