View Single Post
Old 12-18-2020, 02:14 PM   #52 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,335
Thanks: 24,453
Thanked 7,394 Times in 4,789 Posts
answer

Quote:
Originally Posted by Vman455 View Post
I was just curious about your method of calculation because, as I said, I don't see enough information here or in the book to produce the numbers you did. Thanks in advance for your answer.
These forces, as all aerodynamic forces, vary as the square of the velocity.
All one need do is, calculate the differences of the squares, then use the fraction as a multiplier to the original data points, for any given velocity.
The new data reflects the existing air density, at time of original measurements.
If original measurements were not normalized to standard SAE atmospheric conditions, the new data will reflect the same discrepancy.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote