Talk:Servo tab
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The given description of a servo tab is actually more accurately applied to a "balance tab" since the action merely serves to assist the pilot's input. With a true servo tab, the pilot's input is not delivered to the main control surface at all, but only to the tab. The aerodynamic force exerted by the tab is therefore the only means of operation of the main surface. It follows that there can be no such thing as an "anti-servo tab."
The example shown in the photograph is in fact an "anti-balance tab." It allows the pilot to control the main surface directly, but creates an opposing force that is directly related to control deflection, thus diminishing any tendency to over control.
