To: Dave Jackson
“Both the longitudinal and the lateral component of the lift vector will not be in line with the mass while an upward vertical motion is taking place on the tail. When this motion stops both lift vectors will realign with the mast.”
Response:
There is no lift vector. The helicopter is on the ground at low pitch and therefore is not generating lift when the brave individual got under the tail cone and lifted the helicopter. The response to the movement is gyroscopic in nature and does not involve aerodynamics.
There is also a POSSIBILITY that the rotor will maintain itself in the commanded position due to gyroscopic rigidity. It would depend on the stiffness of the system or, if there was any pitch/flap coupling which would aerodynamically realign the rotor to the original position.