At high speed, the equilibrium attitude of the rotor is tipped into the wind by an uncomfortable number of degrees. Since the rotor shaft tends to orient normal to the tip path plane, this means that the pilot and pax wind up hanging from their straps. Also, as pointed out above, the fuselage is...
The lag hinge in an articulated rotor system is there to alleviate the high chordwise bending stresses that would otherwise occur due to flapping.
In an articulated rotor system, blades are allowed to flap about a hinge to alleviate the high stresses and hub moments induced in forward flight...
