Automatic command systems for the flight direction control during the landing process

The aircraft pilot must cancel the aircraft lateral deviation with respect to the runway before the starting of the landing process. This is made by means of automatic command systems for the flight direction control with radio navigation system and equipment for the measurement of the distance between the aircraft and the radio marker. In this paper the authors present two such systems: an automatic command system for the flight direction control and an automatic command system for the flight direction control with radio navigation system and DME (the equipment for the measurement of the distance between the aircraft and the radio marker). For the orientation and stabilization of the aircrafts on the runway direction, the second system may be used with good results. This system is tested by means of numerical simulations in Matlab environment for a light aircraft.