초록 ▼

During operation of a flight control system in a coupled aiming mode, wherein a fire control system (55) azimuth command and elevation command provide an aircraft attitude reference, a bank angle calculation function (1077) provides a bank angle signal to place the aircraft in a roll angle which res

During operation of a flight control system in a coupled aiming mode, wherein a fire control system (55) azimuth command and elevation command provide an aircraft attitude reference, a bank angle calculation function (1077) provides a bank angle signal to place the aircraft in a roll angle which results in a substantially coordinated turn. The bank angle signal is determined primarily as a function of an aiming line of sight heading rate for small azimuth commands, and is determined primarily as a function of aircraft heading rate for large azimuth commands. Additionally, the bank angle initially comprises a component as a function of aircraft lateral acceleration for driving aircraft lateral acceleration to zero, and after the aircraft assumes a roll attitude for turn coordination, the bank angle comprises a component as a function of aircraft side slip for driving aircraft side slip to zero. Automatic turn coordination is disabled if the pilot maneuvers the aircraft to avoid a coordinated turn, and is re-enabled if the pilot maneuvers the aircraft into a coordinated turn attitude. A rate feedback path (143) is provided during operation in the coupled aiming mode wherein aircraft yaw and pitch rate error signals are respectively replaced by the rate of change of the azimuth command and the elevation command. During operation in the coupled aiming mode, intended pilot commanded maneuvers maintain full authority at all times.

대표청구항 ▼

An aircraft flight control system for providing control surface command signals to the aircraft control surfaces thereby controlling the yaw, pitch, roll and lift attitude axes of the aircraft in flight, comprising: fire control means for providing an azimuth command signal and an elevation command

An aircraft flight control system for providing control surface command signals to the aircraft control surfaces thereby controlling the yaw, pitch, roll and lift attitude axes of the aircraft in flight, comprising: fire control means for providing an azimuth command signal and an elevation command signal respectively indicative of the change in aircraft yaw attitude and pitch attitude for an aircraft reference axis to be aligned with an aiming line of sight; coupled aiming mode indicating means for providing a coupled aiming signal in response to activation of a flight control system coupled aiming mode; said azimuth command signal and said elevation command signal respectively providing the aircraft yaw attitude reference and pitch attitude reference during operation in said coupled aiming mode; means for sensing the rat of change of said aiming line of sight and for providing an aiming line of sight heading rate signal indicative thereof; means for sensing the rate of change of aircraft heading and for providing an aircraft heading rate signal indicative thereof; means for sensing aircraft air speed and for providing an air speed signal indicative thereof; and signal processing means responsive to said aiming line of sight heading rate signal, said heading rate signal and said air speed signal for providing a desired roll attitude signal indicative of the aircraft roll attitude which results in a substantially coordinated turn.