Quote:
Originally Posted by COcyclist
Great graphics Phil. Thank you for posting all these. I am a very visual person and your drawings make it easy to understand the research done by these great aerodynamacists. I know you have been saying it all along but it is still surprising to see that the ideal front end in illustration 4 has the same 0.30 cd as the regular windshield. They both decrease at about the same rate as the back is boattailed. Amazing!
I think it is time to boattail my Golf (which looks a lot like the car in illustration 4)  |
Yes,it must have been a great source of frustration to guys like Hucho who knew so long ago now,that we could just do the elongation at the rear and see REAL savings.
I'm working my way back to 1922,with Jaray's stuff,which inspired the 'Template'.
The Golf has a great 'Kamm' roofline and will react favorably to the length.Buchheim and his associates got as low as Cd 0.14 out of their boat-tailed VW models in 1981.They'd probably appreciate someone getting value from this sort of thing.