STEERING ANGLE CONTROL SYSTEM FOR AIRCRAFT

To provide an aircraft steering angle control system that minimizes the amount of skidding of an airframe that is turning on a low-µ taxiway surface such as an icy taxiway surface and allows for directional control of the airframe by a steering command, an aircraft steering angle control system that outputs an operation signal related to a steering angle S as a control command signal for a nose steering wheel incorporates a nose wheel envelope protection 4 including a reference steering angle setting unit 41 that calculates a reference steering angle S s on the assumption that the airframe is not skidding; a skid detection unit 42 that detects a skidding state of the airframe based on the reference steering angle S s ; and a switch unit 43 that selects a control command signal for a nose wheel in conjunction with the skid detection unit 42.