mast moment indicator
sir
with reference to the above subject, I would like to know the significance of mast moment warning system installed in some of the eurocopter helicopters. Why this warning system is optional in some of the helicopters. Is this warning system really required in hingeless rotors. Of course I feel mast moment is nothing but a pitching moment in rotating co-ordinate system or mast moment is the resultant of pitching and rolling moment, please clarify. Is there any empirical formula in deriving mast moment.
thanks in advance
Jagannath