View Single Post
Old 09-04-2011, 12:32 AM   #29 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,585
Thanks: 2,872
Thanked 1,121 Times in 679 Posts
Quote:
Originally Posted by Rokeby View Post
From the link posted by Fabio:

"A whole range of measures were necessary in order to attain the excellent
drag coefficient," explains Dr Teddy Woll, Daimler's head of aerodynamics at
Daimler AG. "Apart from an aerodynamically efficient basic design, these
include numerous optimisation measures on points of detail, such as the air
flow around the front wheels, the underbody design and the flow of cooling
air."

The aerodynamics of the 2012 B-class were optimised using complex
computer calculations and flow simulations which required more than 275,000
CPU hours.
Models and prototypes spent around 1100 hours in the wind
tunnel
.


I take it this means it will be difficult to duplicate/transfer the subtle
aerodynamic "optimisations" with Coroplast, duct tape and a box cutter.
That is what I have always been led to believe ...until I saw what AndrewJ did with his box cutter and some junk plastic sheeting. ( Even before the boat-tail )
He dropped his Cd from .31 down to .26 with just a few mods.
Also, i think back on the Hot Rod 'project red hat' Camaro. They did some wind tunnel testing on the car yes - but not thousands ( or even hundreds ) of hours in the wind tunnel. They got a pretty much stock looking '80 Camaro down to .20

Car Aerodynamics - Hot Rod Magazine
  Reply With Quote
The Following User Says Thank You to Cd For This Useful Post:
ERTW (02-08-2012)