View Single Post
Old 04-21-2009, 06:36 PM   #8 (permalink)
Moderate your Moderation.
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
Another question, slightly OT for the thread:

Which has more effect, reducing frontal area, or reducing Cd by the same percentage?

Say we take a bullet, with a Cd of .24, and a frontal area of 50 ft^2.

In one test, we reduce the bullet to 45 ft^2, a total of 10% reduction in A, but Cd stays steady at .24

Now in the second test subject, we reduce the Cd by 10%, to .216, but leave the A the same.

Which reduction would have the most effect? My initial thought is reducing A having more effect comparatively, all other things equal.
"ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote