View Single Post
Old 08-19-2015, 05:26 PM   #17 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,314
Thanks: 24,440
Thanked 7,386 Times in 4,783 Posts
numbers

Quote:
Originally Posted by ennored View Post
A little reality check on the math though....

35 times the frontal area? That means it has 1/35 the drag coefficient, right?

1/35 = .029

IF the coefficient for the round shape was 1 (it must be less, but follow along), the coefficient for the airfoil is .029? Seems too low, even for a section of a chord? Someone has some numbers, right?
When the chord length of the airfoil section equals 167X the diameter of the wire,the drags are identical.
Bear in mind that we might be considering a length of crude circular wing support on an ultralight aircraft to a length of wing on a Lear Jet.
It's 2-dimensional flow,so not real helpful for automotive applications,however it does illustrate potentialities with respect to streamlining.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote