Final answer:
The question is about the role of primary and secondary flight control systems in an aircraft, particularly the fly-by-wire technology in the Boeing 777, which uses computer systems to operate control surfaces based on pilot input.
Step-by-step explanation:
The question pertains to the primary and secondary flight control systems of an aircraft, with a particular focus on the fly-by-wire technology used in modern airplanes like the Boeing 777. Fly-by-wire systems replace traditional mechanical flight control systems with electronic ones, where pilot inputs are converted into electrical signals. These signals are then interpreted by computers to actuate control surfaces on the wings and tail of the aircraft.
Most notably, primary flight controls like the elevators, rudder, and spoilers are used for maneuvering the aircraft in pitch, yaw, and roll, respectively. Secondary flight controls, like flaps and slats, are used to enhance the aircraft's lift during takeoff and landing. The Boeing 777 is specifically designed with such a computer-based control system, which not only reduces weight and cost but also enhances the aircraft's performance by allowing for precise control by the pilot and co-pilot, thereby negating the need for a larger crew.