A piloting device may include a section for generating control orders for
the control surfaces acting on the yaw movement of an aircraft. A central
unit determines an instruction to rotate the aircraft, based on control
orders, and determines a global moment to be applied to the aircraft
about the yaw axis so that the aircraft performs the rotation
instruction. The central unit divides the global moment into a sum of
elementary moments and computes, for each control surface, the
instruction to be applied to its actuator so that the latter generates
the associated elementary moment.