* N. total de caissons =

* Largeur de caisson = mm

* Corde centrale = mm

* Bout 2 = % , * Bout 1 = % , * Plume = %

Résultats:

  Surface m2

  Allongement

Back-engineering d'Ange

S = L*C [ n - 5 + 2 *( Bout2 +Bout1 + Plume/2 ) ]

e = n * L

a = e2 / S