Hello, I would like thank you for your help.
I' am working on this equation, I think I could compute Harm with DOW an DOI.in fact I noticed, for the same AirCraft A320 I can have DOI totaly different:
Exemple from LoadSheet :
A320 register XXXX
DOW 43780
DOI 45,5
A320 register YYYY
DOW 44128
DOI 27,1
index equation
DOW= 44218
DOI=27,1
Index = W*(Harm-H25)/C + K
With
H25 = 18,850 for A320
K= 50 for A320
C= 100 for A320
Harm = ((I - K)*C)/W + H25
Harm for register YYYY= 18,33 m
Harm for register YYYY= 18,74 m
in fact I suppose each company compute Harm of each aircraft, for me, it's the only reason which explain data difference between two A320
I continue the research