View Single Post
Old 03-17-2015, 06:06 PM   #18 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,267
Thanks: 24,392
Thanked 7,360 Times in 4,760 Posts
difference

Quote:
Originally Posted by markweatherill View Post
I've wondered for a while about exhaust gases.

Is there enough exhaust gas to make a difference in a car's aerodynamics?
Would pointing the tailpipe in a particular direction have an effect?
Hoerner reported that the Messerschmitt Me 109,at 380-mph,at say,90% power,enjoyed 250-pounds of thrust from the engine exhaust.
It's the only citation I've seen in 40-years which actually quantified such a thing.
NASCAR,while having the potential to benefit from this sort of thing,specifies a side outlet so that following drivers aren't exposed to the undiluted exhaust while drafting.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/

Last edited by aerohead; 03-17-2015 at 06:06 PM.. Reason: correction
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
freebeard (03-17-2015)