What factors does the TAD computer use to calculate inputs to the rudder trim?

The TAD (Turn Coordination and Acceleration) computer calculates inputs to the rudder trim by considering multiple aerodynamic and operational factors, among which are pitch rate, altitude, airspeed, and engine torque.

Pitch rate is crucial as it relates to the aircraft's attitude change over time, influencing how the aircraft responds to control inputs. Altitude and airspeed provide the necessary context regarding the aircraft's performance and environmental conditions, affecting aerodynamic forces acting on the aircraft. Engine torque is also significant, particularly for multi-engine aircraft, as it can create differential thrust that may necessitate adjustments to the rudder to maintain straight flight.

By integrating these factors, the TAD computer can enhance the stability and controllability of the aircraft, ensuring that it operates efficiently and safely under varying flight conditions. This comprehensive approach to calculating inputs enables more effective management of the rudder, which is critical for maintaining balance and coordination in flight.