dhk79
Well-known member
Good theory, but I think you have to be a little more specific. You could safely state that the Y axis of the pivot points (green) are all generally orientated toward the front of the airplane.crashed again said:may be for the simple reason so that ALL the pivots point in the same direction as the plane fly's?
My statement, however, about the primary axis of rotation is still true but might be stated clearer for better understanding. How's this sound?
The Y axes of the pivot points (green) for all moving parts remain basically orientated toward the front of the airplane, however, the pivot point X axes (red) must be rotated around to align with the rotation axis of each moving part (i.e. hinge line or axle); except for the spinner and prop spawn which remain oriented along the pivot point's Y axis (green).
For control surfaces, start by moving the pivot point to the center of the control surface's hinge line. Then rotate the pivot point around the Y axis to bring the pivot point's X axis (red) into alignment with the hinge line, when viewed from the front of the aircraft. Lastly, while viewing from the top of the aircraft, rotate the pivot point around the Z axis to again align the pivot point's X axis (red) with the hinge line. Check the alignment from all angles and make fine adjustments as necessary.
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