To: chiplight
As I previously stated the blades are offset in front of the mast relative to the pitch change axis. This is done to minimize inplane bending of the blade. The purpose of this offset is to try to align the blade pitch axis (CG) with the center of pressure. Or, is it the aerodynamic center (I forgot which). Since this is the case it would be difficult to draw a straight line through the teeter hinge and align with the blade CG.
Because of the underslinging of the rotorhead there is minimal if no lead and lag when the pilot introduces cyclic pitch. The blades will maintain the same degree of cone relative to each other and the cone angle will remain the same as when the pilot first introduced collective pitch. When the blades flap about the cone hinge it will deviate from the original cone angle and with this change in position the blades will lead and lag. On a conventional flex rotor with offset hinges or on the more modern helicopters with elastomeric bearings when the pilot introduces cyclic pitch the blades will lead and lag in direct proportion to the degree of cyclic pitch input by the pilot.
