To: Graviman
I thought that the spanwise offset of the pitch horn from articulating hinge was to allow blade lift to cause a nutating "feedback" force to the gyro. This meant that the gyro would gently respond to a continued rotor input, from say forward flight. Unless the pilot provided a constant input the effect was like fixed wing longitudinal and lateral dihedral.
There is no articulating hinge on the AH-56 rotorhead as the head is rigid. The blade is attached to the rotorhead by a series of hinges, which allow pitch change. It could be said that there is an apparent flapping hinge on the rigid rotorhead and this flapping point would change with aerodynamic loading. If the blade did in fact flap any movement of the blade in relation to the gyro would result in a pitch change which would provide a restoring force to the blade returning it to its’ commanded position.
The gyro being rigid in space would provide a resistance to movement caused by blade feedback and being rigid would cause the blade pitch to change and not cause the gyro to move as a result of any feedback.
