초록 ▼

A synthetic speed stability subsystem for maintaining the speed and phugoid stability of an inherently unstable aircraft is connected to a main flight control system. The speed stability subsystem uses the pitch and roll angles, and the equivalent air speed of the aircraft for calculating a syntheti

A synthetic speed stability subsystem for maintaining the speed and phugoid stability of an inherently unstable aircraft is connected to a main flight control system. The speed stability subsystem uses the pitch and roll angles, and the equivalent air speed of the aircraft for calculating a synthetic speed stability signal, which is fed to the main flight control system, for controlling the stability of the aircraft.

대표청구항 ▼

A flight control system including an air data source for controlling the angle-of-attack stability of an aircraft having at least one control surface, comprising: means for obtaining an equivalent airspeed signal of the aircraft from an air data source and generating a reference signal corresponding

A flight control system including an air data source for controlling the angle-of-attack stability of an aircraft having at least one control surface, comprising: means for obtaining an equivalent airspeed signal of the aircraft from an air data source and generating a reference signal corresponding thereto; means for processing the equivalent airspeed signal and the reference signal to generate a synthetic speed stability signal; means for inputting the synthetic speed stability signal to actuators of said at least one control surface for maintaining the angle-of-attack stability of the aircraft in a substantially level flight; means for sensing pitch angle of the aircraft and generating a signal corresponding thereto; means for sensing roll angle of the aircraft and generating a signal corresponding thereto; and wherein the processing means multiplies the pitch angle and the roll angle signals as well as the error between the reference equivalent airspeed and the equivalent aircraft speed signals to generate a composite synthetic speed stability signal to be input by the inputting means to the actuators for maintaining the angle-of-attack stability of the aircraft for all attitudes.