Lu, What flaw is in my 2nd picture?
The swashplate is level, but there is forward airspeed. The pilot may have just levelled the ship after a manuever.
The point is that the tip path plane does not always follow the incline of the swashplate. That's what flapping does- it allows the blades to tilt off of the plane of the swashplate to compensate for dissymetry of lift.
It has been said that lead-lag forces in a teetering rotor can be reduced with the proper undersling. That's another topic
[This message has been edited by Try_Cyclic (edited 23 November 2000).]