The TAD computes input to the rudder trim system based on which parameters?

The correct answer highlights that the TAD (Tactical Automatic Direction) system computes input to the rudder trim system based on engine torque, airspeed, altitude, and pitch rate. This is essential because these parameters directly influence the aircraft’s performance and handling characteristics, especially during maneuvers that require adjustments to maintain stability and control.

Engine torque plays a significant role in creating yawing moments that must be counteracted by the rudder. As the engine's power changes, so does the amount of torque, requiring precise adjustments through the trim system to maintain coordinated flight. Airspeed is crucial because the aerodynamic forces acting on the aircraft change dramatically with different speeds, affecting stability and control inputs. Altitude impacts air density and, subsequently, lift and drag, which also influence control effectiveness. Lastly, pitch rate provides insight into how quickly the aircraft is rotating about the lateral axis, helping to determine if additional rudder adjustments are needed to maintain balance during dynamic flight situations.

The combination of these factors ensures that the TAD can assist pilots by providing optimal rudder trim adjustments, enhancing aircraft performance and safety.