Fly-by-wire controller is one of the most important subsystems in the fourth generation fighter. The controller converts the pilot's command into electrical signal, which is converted into control signal after the flight attitude is integrated by computer. The controller can improve the flight quality of aircraft, including increasing stability and mobility. After the use of fly by wire controller, mobility and stability are no longer antagonistic. BE CAREFUL, if you want to imporve the aircraft in the mirror mode, you should use overload to know about the codes in the In the "input" variable and save them. And I don't recommend adding aerodynamic changes to this aircraft.