Final answer:
The student's question pertains to the Automatic Flight Control System (AFCS) in aviation, specifically regarding the subsystems comprising it, which include Stability Augmentation System (SAS), Trim, Flight Path Stabilization (FPS), Autopilot, and Stabilator.
Step-by-step explanation:
The subject of the student’s question relates to the Automatic Flight Control System (AFCS), which is an essential component in aviation, particularly in managing aircraft stability and navigation. The AFCS is comprised of five basic subsystems, which are the Stability Augmentation System (SAS), Trim, Flight Path Stabilization (FPS), Autopilot, and Stabilator.
Stability Augmentation System (SAS) works to enhance the inherent stability of an aircraft by automatically managing control movements. The Trim system adjusts the aircraft’s control surfaces to ensure steady flight without constant pilot input. The Flight Path Stabilization (FPS) maintains the aircraft's flight path, reducing the workload on the pilot during extended flight periods. While the AFCS term missing in the student's question is Autopilot, a system that can control the trajectory of an aircraft without constant 'hands-on' by the human operator. Finally, the Stabilator is a movable horizontal tail surface that controls the pitch of the aircraft.