|
Hey guys, I see some of you are concerned about digitally finding your frontal area and looking up your Cd values so you can calculate your CdA but why?
CdA is what we call Flat plate Drag (FPD) in the field. FPD is simple to use and is the coefficient needed to calculate drag (or vise versa in our situation). It produces easy to compare values for your baseline and modification data.
Flat Plate Drag uses the same equation we are already familiar with:
Drag = 0.5*density*velocity^2*FPD
(honestly, what it does is set Cd to 1.0 to remove it from the equation, then your comparisons are in fictional areas with a Cd of 1.0)
Do you guys have a test methodology for determining drag?
Is there a standard for testing yet? Is that something I could help put together?
-Ryan
|