View Single Post
Old 06-10-2017, 03:54 PM   #2 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,861
Thanks: 23,922
Thanked 7,207 Times in 4,640 Posts
taper

Quote:
Originally Posted by mikesheiman View Post


Too much or too little taper and rear slope, opinions?
I am aiming for a CD of about 0.20 ultimately. The rear wheel is in the center (trike style design, not a four wheeler).
For 3-dimensional flow,this 1981 VW 'Flow' body,by Buchheim et al. has the most extreme curvature which will still prevent separation.

Here's the same 'car' with some of the tail chopped away,with litt'e drag increase

Follow the contour as far as you're able,then just chop it off as with a loaf of bread.
You really want curves instead of angles.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following 2 Users Say Thank You to aerohead For This Useful Post:
BamZipPow (06-10-2017), MPGeo (06-11-2017)