Quote:
Originally Posted by ME_Andy
OK, I'll watch the video.
0:23s : "apparently ideal shape" -- I've never seen anybody here claim that. The original description doesn't claim that.
2:10 : you're right, the template doesn't predict where the flow detaches to a high degree of accuracy. It's maybe 20cm off or so. Big whoop. Nobody claimed the template was perfect, it's an approximation. The original description even says, it should be useful for amateurs.
2:53 : "there's a small separation bubble at the rear of the window". Big whoop. Probably caused by the antenna.
4:41 "testing beats following every template" : yep, agree. If you have time to do so
7:54 The Sagitta and the Taycan look really close to the template to me. Not perfect.
In summary, the template isn't perfect. OK, great. What are we fighting about here?
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Here are my criticisms of how the template is used here:
It is claimed to allow you to:
- Show where there is separated and attached flow on existing cars
- Guide the shape of rear extensions
- Show how rear spoilers on sedans should be positioned and shaped
- Allow the assessment of the ‘aerodynamic purity’ of cars
All these purported uses are simply rubbish!