
Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Bill McEachern Mar 19, 2015 6:35 PM (in response to Alexander Garnett)Any book on lift would have it  it is so basic  but I am not sure who gets the credit for first use/formulation....I should probably know that. Hoerner, in Fluid Dynamic Drag, seems to imply that is was either Lilienthal or Eiffel but it isn't clear. Hoerner's companion book is called Fluid Dynamic Lift  I am sure you could use it or almost any book on aerodynamics.

Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Alexander Garnett Mar 20, 2015 5:54 AM (in response to Bill McEachern)My problem comes as the typical lift equation is not suitable. The downforce equation is providing results for the wing running in ground effect and are comparable to my results from cfd simulations of a wing in ground effect

Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Jared Conway Mar 20, 2015 4:27 PM (in response to Alexander Garnett)then you'll have to find the derivation of that equation or derive it yourself
it really is like 2 plates with a distance between them



Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Bill McEachern Mar 19, 2015 6:47 PM (in response to Alexander Garnett)Von Mises Theory of Flight seems to give it to Reynolds as it is sort of essentially implied in the formulation of the Reynolds number...

Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Prabhakar Purushothaman Mar 20, 2015 7:41 AM (in response to Alexander Garnett)Kindly go through following links
http://faculty.dwc.edu/sadraey/Chapter%203.%20Drag%20Force%20and%20its%20Coefficient.pdf

Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Roland Schwarz Mar 20, 2015 4:35 PM (in response to Alexander Garnett)I think "H" for height should be the airfoil chord.

Re: Source of Downforce Formula for the Calculation of Wing Downforce?
Roland Schwarz Mar 20, 2015 4:36 PM (in response to Roland Schwarz)Units of force is not metres.
