PPRuNe Forums - View Single Post - CG formula anyone ?

1st Mar 2009, 15:56

#47 (permalink)

QAYS

Join Date: Feb 2009

Location: France

Age: 51

Posts: 12

Likes: 0

Received 0 Likes on 0 Posts

I was wrong,

my equation don't give a good result, worst when I submit the same data to another software which give %mac the result is not like in the loadsheet, I am lost!!!

If you have an idea

Here some equations :

Code:

     
            ( Harm - H25% ) * W
Index = ----------------------- + K
                          C
                 100*C*(Index - K)                  100* ( Harm - H25% )
% Mac = ------------------------------- + --------------------------
          Weigth * Length of Chord             Length of Chord

best regards

Reply