Accelerometers in autopilot assist in achieving what in flight control?

• A. Maintaining altitude
• B. Setting rate of climb and descent
• C. Controlling yaw
• D. Regulating engine thrust

Answer: (B)

Accelerometers measure linear acceleration along the aircraft’s axes, including the vertical axis. In an autopilot, this vertical acceleration data helps the system understand how quickly the aircraft’s vertical speed is changing. When you set a target climb or descent rate, the autopilot uses that acceleration information to adjust pitch so the vertical speed moves toward and stays at the desired rate, providing a smoother, controlled climb or descent. This is distinct from simply holding altitude or controlling yaw or engine thrust, which rely on other sensors and controls.