What type of flight control system was developed in the 1950s and 60s to relax the stability of an aircraft in an effort to make it more maneuverable?

What type of flight control system was developed in the 1950s and 60s to relax the stability of an aircraft in an effort to make it more maneuverable?

• A. Reciprocating Control
• B. Digital Autopilot
• C. Fly-by-Wire
• D. Mechanical Linkage

Answer: (C)

Relaxing stability in flight control means designing an aircraft to be more responsive and agile by reducing its natural aerodynamic stability, while still keeping it safe through active control. Fly-by-wire achieves this by replacing direct mechanical linkages with electrical signals and a flight-control computer. Pilot inputs are converted into surface movements by the system, and the computer applies control laws that can limit or shape those movements to keep the aircraft within safe operating bounds. This combination lets the airplane be intentionally less statically stable and more maneuverable, with envelope protection and stability augmentation handled software-side. Mechanical linkage would preserve natural stability and cannot provide the same level of computer-managed control; digital autopilot came later and serves different automation goals. So, the system described is fly-by-wire.

Relaxing stability in flight control means designing an aircraft to be more responsive and agile by reducing its natural aerodynamic stability, while still keeping it safe through active control. Fly-by-wire achieves this by replacing direct mechanical linkages with electrical signals and a flight-control computer. Pilot inputs are converted into surface movements by the system, and the computer applies control laws that can limit or shape those movements to keep the aircraft within safe operating bounds. This combination lets the airplane be intentionally less statically stable and more maneuverable, with envelope protection and stability augmentation handled software-side. Mechanical linkage would preserve natural stability and cannot provide the same level of computer-managed control; digital autopilot came later and serves different automation goals. So, the system described is fly-by-wire.