mast moment measurement
sir you are right mast moment was measured during forward flight and there was a reference w.r.t blade no 1 on rotating mast. We know that mast moment is resultant of pitching and rolling moments.What I mean to say is measurement being done on rotating mast but how about using lift rods i.e non rotating system to evaluate the same. Here lift rod means not rotating control rods(pitch links) but 4 rods which connect rotor,transmission to fuselage structure.