I just looked up what ATFQ means, real nice....


First I never said the L-1011 used a mass balanced stab, I said it had mass balancers, I think the ones I made were for the wing, maybe the ailerons.

Second, if you are going to read the post but dismiss the content I don't know how to help you. Most full size fighters fly supersonic. In supersonic flight, the aerodynamic center moves very far aft, therefore they need massive irreverisble hydraulic actuatirs for this (read number 2 about where to put the pivot). A supersonic fighter cannot put the pivot that far forward as in supersonic flight the control forces would be too high.

Maybe that is why they do not balance them, they already have these fantastically stiff actuators.

As I said before, do a google search on "mass balanced" stabilators I found full size with balancers that are not mach 2 fighters