Quote:
Originally Posted by skyking
So, my beetle at .38 was quite an improvement. Funny to say that out loud 
I have high hopes of dragging it ( pun intended ) down below the .3 mark with full skirts and a kamm. |
When Kamm et al. was messin' around with their models,they were considering aspect ratios of the aft-body of the car.
When the tail was 3.5X body height,they had Cd 0.21 with a simple wing shape.
When they cut the aspect ratio down to 1.6X it increased to Cd 0.33.
With your New Beetle,because of it's curved upper body,at any length you'd have an advantage.
Rounding off the body transversely like Jaray did, lowered drag from 0.21 to 0.13.
Sub-0.30 should be a cakewalk!
Here is a 1937-40 Adler 2.5-Liter sedan that they modified in full scale
With K-Tail
*The shortest body length went from Cd 0.33,to Cd 0.25