Hi vorticey
OK, I understand.
The original question was for the fun of it. It was based on a mast rotating with a constant angular velocity, a teetering hub, and a tip path axis that is not aligned with the mast's axis. The tip path axis must be experiencing acceleration and deceleration twice per revolution. The question was if it was best to explain the acceleration/deceleration by the mathematics of a knuckle joint or by the mathematics of cyclical Coriolis (i.e. flapping).
Someone should start a thread on delta-3 v.s. flapping hinge offset; when the current stuff slows down.
