cjarrett |
January 22, 2010 01:31 |
Calculating forces from wings..
Please excuse my ignorance but I have a basic question to ask. I've began using CFDesign to start testing some racecar aero properties and want to make sure I'm doing things correctly.
I've got my wing model creating forces in CFDesign, which at 10 deg AoA is around 390 newtons. For planar area, I take the entire area of the wing chord surface and divide by 2, which is 0.528m squared. When I calculate my coefficient of lift I get 0.382 which is 390.027/1215 (dynamic pressure at 45m/s) x 0.528 which is my planform area.. is my calculation correct?
Also, is my measurement of the planform area correct, or should I take the exact dimensions of the wing from the top view when its at 10 degrees? Because the wing is angled away, it will be slightly smaller in area from that view..
Thanks for your patience..
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