초록 ▼

A fire control system (55) azimuth command and elevation command provides a flight control system attitude reference in response to operation of the flight control system in a coupled aiming mode. The coupled aiming mode is engaged in response to the continuous operation of a pilot switch (920) the

A fire control system (55) azimuth command and elevation command provides a flight control system attitude reference in response to operation of the flight control system in a coupled aiming mode. The coupled aiming mode is engaged in response to the continuous operation of a pilot switch (920) the azimuth command and elevation command being below respective threshold magnitudes (940, 941), and the operation of the fire control system (55). During operation in the coupled aiming mode, the azimuth command and elevation command replace the yaw attitude feedback error signal and pitch attitude error signal, respectively, as the aircraft attitude reference. During integration of the fire control system and the flight control system, the flight control system is made less sensitive to small pilot command stick inputs below a stick input threshold magnitude, so that small or inadvertent pilot commanded yaw and pitch maneuvers will not affect the yaw and pitch attitude reference commanded by the fire control system azimuth and elevation commands. However, intended pilot commanded yaw and pitch maneuvers (70) maintain full authority at all times.

대표청구항 ▼

A helicopter integrated fire and flight control system for providing control surface command signals to the helicopter control surfaces thereby controlling the yaw, pitch, roll and lift attitude axes of the helicopter in flight, comprising: control means operable by a pilot to provide axis command s

A helicopter integrated fire and flight control system for providing control surface command signals to the helicopter control surfaces thereby controlling the yaw, pitch, roll and lift attitude axes of the helicopter in flight, comprising: control means operable by a pilot to provide axis command signals for controlling a given attitude axis of the helicopter; means responsive to said axis command signals for providing a desired attitude signal indicative of a desired helicopter attitude in said given attitude axis; means for sensing the attitude of the helicopter in said given attitude axis and for providing an actual attitude signal indicative thereof; means responsive to said desired attitude signal and to said actual attitude signal for providing an attitude feedback error signal as a function of the difference between said desired attitude signal and said actual attitude signal; and signal processing means responsive to said attitude feedback error signal for providing control surface command signals to drive said attitude feedback error signal to zero for said given attitude axis: characterized by: fire control means for providing an azimuth command signal and an elevation command signal respectively indicative of the change in helicopter yaw attitude and pitch attitude for a helicopter airframe 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 engagement of an integrated fire and flight control system coupled aiming mode; and said signal processing means being responsive to the presence of said couple aiming signal for respectively replacing said attitude feedback error signals for the yaw attitude axis and the pitch attitude axis with said azimuth command signal and said elevation command signal.