Robinsons and fat asses
Nr Fairy. Having (FOR EXPERIMENTAL PURPOSES) carried out some static fexion tests on a well known helicopters main rotor shaft, its quite impressive how far it moves before any permanent deformation takes place. I will do the sums as to the relative tip to boom distance when I have a clear head. Just as an aside, I have tried similar flex tests on the rear cross tube. The ammount of force and movement required to straighten a bowed tube when it is off the machine, makes you realize how well the fragile looking rear side frames are designed and made,in order to be capable of dissipating these loads during a heavy landing. Be nice to know what the steel and alloy specs are for these components (anybody know?).