摘要:
A pedal system particularly tailored to a Fly-By-Wire (FBW) flight control system includes a double gradient linkage assembly. The double gradient linkage assembly includes a damper system and a spring system that improves yaw axis (azimuth) control of the aircraft. Control is only required when a change in the yaw axis state is demanded. Since only minimal displacement inputs to such a FBW flight control system is required, the travel of the pedals are exceeding compact, such that pilot workload is significantly reduced through the reduction in the frequency and magnitude of aircraft control inputs.
摘要:
A force-feel system is implemented by mechanically coupling a servo-actuator to and in parallel with a flight control system. The servo-actuator consists of an electric motor, a gearing device, and a clutch. A commanded cockpit-flight-controller position is achieved by pilot actuation of a trim-switch. The position of the cockpit-flight-controller is compared with the commanded position to form a first error which is processed by a shaping function to correlate the first error with a commanded force at the cockpit-flight-controller. The commanded force on the cockpit-flight-controller provides centering forces and improved control feel for the pilot. In an embodiment, the force-feel system is used as the basic element of stability augmentation system (SAS). The SAS provides a stabilization signal that is compared with the commanded position to form a second error signal. The first error is summed with the second error for processing by the shaping function.
摘要:
An arrangement for generating control commands for controlling the slats and landing flaps of an aircraft includes two manually operable command input levers which are arranged directly side-by-side or as a “rod-within-rod” and are connected respectively by two linkages to two rotatable sensor disks that respectively cooperate with two sets of signal emitters that are electrically connected respectively to two control computers. The two levers and two linkages are coupled to form a single command transducer having two coupled parallel command transmission paths. Based on the signals of the signal emitters, the control computers generate actuating signals that are provided to actuators for adjusting the positions of the slats and landing flaps. A mechanical disconnect or jamming of one mechanical command transmission path or a malfunction or failure of one of the sensor arrangements will not cause a failure of the slat and flap command functions, because the other command transmission path will remain functional.
摘要:
A portable, hand-holdable controller for interfacing with various flight control, weapons control and other subsystems of an aircraft by a crew member who is not piloting the aircraft. In a preferred embodiment the portable controller includes a keyboard, a mode selector switch and a cursor control. The mode selector switch allows the controller to be interfaced with a plurality of independent multi-function display (MFD) or multi-purpose display (MPD) systems. The cursor control enables the non-pilot crew member to control the cursor on the display being interfaced with. The keyboard allows the non-pilot crew member to enter alphanumeric data or commands to the display being interfaced to. Interfacing is accomplished by coupling the controller via a suitable cable to a convenient point on a control panel of the aircraft. The controller is lightweight and compact and able to be held with one or both hands by the non-pilot crew member or alternatively strapped to a thigh of the crew member. The controller significantly improves the ergonomics associated with controlling the various systems of the aircraft which would otherwise require a significant number of repetitive hand movements by the non-pilot reaching to the control panel of the aircraft. The controller also eliminates the need for replicating various switches on the control panel. In an alternative embodiment a pair of independent cursor controls are used for independently controlling cursors on separate display systems of the aircraft. A visual display panel is also included for viewing data input from a keyboard of the controller.
摘要:
A collective detent system is incorporated in combination with the flight control system of a helicopter to enhance vertical takeoff flight operations of the helicopter. One embodiment of the collective detent system includes a collective control stick that is pivotable through a range of operating positions from a full-down collective position to a full-up collective position with one of the operating positions of the range defining a vertical takeoff operating position that provides the vertical takeoff power level required for the vertical takeoff flight profile of the helicopter, a trim switch for a conventional collective trim system that is operative to implement a trim mode function wherein the collective control stick can be trimmed in any selected operating position, a vertical takeoff (VTO) detent switch that is operative to generate a detent signal when activated, an adjustable sensor that is operative to generate a stick-position signal when the collective control stick is pivoted into the vertical takeoff operating position, a restraint force generating (RFG) device, and a modified trim system circuit that functionally interconnects the trim switch, the VTO detent switch, the adjustable sensor, and the RFG device in interactive combination. Prior to pivoting the collective control stick into the vertical takeoff operating position, the VTO detent switch is activated to generate the detent signal. During the vertical takeoff profile, the adjustable sensor detects the pivotal movement of the collective control stick into the vertical takeoff operating positions and generates the stick-position detent signal in response thereto. The RFG device is automatically operative in response to the detent signal and the stick-position signal to generate a restraint force against the collective control stick to electro-mechanically "detain" the collective control stick in the vertical takeoff operating position and to impede manual movement of the collective control stick out of the vertical takeoff operating position.
摘要:
A control device with a control stick, wherein the control stick is moved by an irreversible actuator controlled by a computer, and the computer controls the position of the actuator and thus the movement of the control stick, and slaves the control column position to the force applied, in accordance with force data, from a force sensor, and position data, from a position sensor, through use of a position vs. force law entered in the computer.
摘要:
An active hand controller system includes a moment cell for generating a signal representative of the force or torque applied to the stick of the hand controller by a user. The moment cell has an internal center of rotation and distributed masses are used to counterbalance the effect of inertial forces on the stick of the hand controller.
摘要:
Device for the control of the elements of a machine having a stick (6,7) designed to be activated by one hand of an operator and mounted tilting around at least one axis (X--X) transverse to the stick. The stick is associated with at least one position sensor (17) which deliver an electric signal representing the tilting of the stick around said axis on both sides of a neutral position, the electric signal controlling at least one of the elements of the machine by a calculation device (30). The device also includes at least one torque motor (12,13) associated to said axis (X--X) so that the tilting of the stick (6,70 drives a relative rotation between the rotor and the stator of the torque motor and in that the torque motor is fed by the calculation device (30).
摘要:
Hand control devices are disclosed which provide for damping of vibrations and other unintended motion with three or more degrees of freedom. In one embodiment, a four degree of freedom damped hand control is illustrated, including a chamber filled with a viscous fluid, and a transmission which couples movement of a handle in the X, Y and Z directions and rotation in a .theta. direction about one of the axes to movements of one or more drag elements in the fluid. The hand control further includes a position-sensing and a rotation-sensing assembly for sensing the position of the handle relative to a reference frame and for generating electrical signals indicative of the position and angle.
摘要:
A five or six degree of freedom device which includes a two or three degree of freedom wrist action hand controller and in which additional degrees of freedom are provided by motion of an operator's forearm connected to a mounting member that carries or supports the wrist action hand controller.