AviationTire Airframe And Systems, Electrics, Powerplant, Em. Equipment Airframe And Systems Stabilising surfaces Q 5 / 5

The rudder limiters on several aircraft have a specific function, which is to:

Prevent heavy gusts from damaging the rudder.
Prevent large rudder deflections on ground.
Prevent excessive loads from acting on the rudder.
Reduce rudder load during take-off and landing.