Quote:
Originally Posted by winkosmosis
According to the almighty template, the 911 sucks. And yet it's one of the most aerodynamic sports cars at 0.28 Cd. You know why? Because the roof and rear window are sloped shallow enough that airflow remains attached and doesn't detach until the rear spoiler. Those angles are what matter here. If you made the 911 look like the template, there would be no advantage for flow attachment, and the cross section of the rear end would be much bigger.
This is a perfect example of the arbitrary and nonsensical nature of the template.
Forget templates and just make sure the curves of the body allow attached airflow all the way back at the desired speed! BTW, you notice there aren't different versions of the template for different speeds?
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Can you explain why Boxfish,with 12% less roof has Cd 0.19 vs 0.28 for the 911.
Can you explain why Porsche has abandoned the Lange body with the new 918 and that it is more 'Template?'