| 摘要 |
A flight path control apparatus for controlling an aircraft to execute a capture maneuver of a predetermined heading or track and provide a roll correction signal for controlling the path of said aircraft along an exponential transition curve. The corrective heading or track signal DELTA psi is generated in accordance with <IMAGE> where DELTA psi is the magnitude of the corrective heading or track command signal, g is a constant corresponding to the acceleration of gravity, Vt is the true airspeed of the aircraft, tau is a predetermined constant of aircraft roll rate, phi i is the roll angle of the aircraft at the initiation of the capture maneuver, phi i is the time rate of change of the roll angle of the aircraft at initiation of the capture maneuver, and phi M is a predetermined maximum time rate of change of roll rate of the aircraft during the capture maneuver. The apparatus provides a predictive heading or track hold signal which avoids oscillation or overshoot in heading and roll when a hold mode is selected. The corrective heading or track command DELTA psi is combined with the initial roll angle of the aircraft to provide a roll attitude command signal psi rho where psi rho = phi i+ DELTA psi to control the aircraft to execute the exponential transition path in capturing the predetermined heading or track.
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