|
- Show where there is separated and attached flow on existing cars
Audi A6 A7 model aero mentioned here many times SAE paper
- Guide the shape of rear extensions
5 of 6 cars in the video match the AST-II template pretty accurate anyone can check themself
- Show how rear spoilers on sedans should be positioned and shaped
Many examples already mentioned lastly the hotrod magazine camaro (ok no a sedan car. Which rear spoiler just touches the AST-II template. First you need to tilt the picture little bit to get it first straigth.
Taycan turbo S also raises its rear spoiler in eco mode to go closer the template. I did not find a side picture to check how high it actually raises.
- Allow the assessment of the ‘aerodynamic purity’ of cars)
This is more tough one to answer but the the most aerodynamic models seem to follow the template even the aerodynamics havent used the template. Like I wrote before you usually cannot know what their limiting factors in the design have been, but the more aerodynamic the car is more likely it happens to follow the template.
Yesterday I checked ligthyear one with Cd under 0,20. Almost perfect match. Sligthly off to give space for rear passenger heads.
Why aerodynamics dont say the use the template--> Does olympic athletics tell what drugs or medizines they use or all the ways they train themself?
No they don`t. In many areas there are trade secrects and common ways how things are done. Maybe aerodynamics want to feel special by making lot of effort to sculpture better shapes in wind tunnel and try different things and then in the end end up exatly the same shape that could have been used in the first place and would have saved a lot of time, money, recources.
Rules of physics don`t change in the wind tunnel or in the road. There is a physical reason behind the template and thats why it works the best.
|