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7139643 |
Control device with servocontrol loop, particularly an electro-hydraulic flight control actuator
A control device includes a main servocontrol loop having a servocontrolled system, and a compensation device on the input side of the control device. The control device includes an internal loop...
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6998992 |
System and an arrangement to determine the position in a hazardous situation
The present invention relates to a system and to an arrangement for evaluating in a defined space or area a delimited area ( 7 ) in which there is a degree of urgency greater than the degree of...
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H002040 |
Personal computer based utility program for an electronic countermeasure system
A utility software program which provides Operational Flight Program and User Data File software files for an AN/ALQ-165 Deceptive Electronic Countermeasures set in a Personal Computer DOS...
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6349258 |
Method for horizontal routing of an aircraft between two waypoints
This method meets the constraints dictated by the instructed values of turning radius and by the instructed values of direction of approach in terms of route or course to be maintained at the...
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5901927 |
Ground strike protection function for aircraft autopilot
A method and apparatus for use with an aircraft autopilot to prevent an aircraft part from striking the ground during near ground maneuvers by employing a protection circuit between the outer loop...
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4599698 |
Aircraft trim actuator shutdown monitor system and method
The directions of travel of an inner and an outer loop actuator are monitored for movement in opposite directions within selected ranges and the outer loop actuator is disabled under selected...
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4592055 |
Outer-loop monitor for aircraft automatic flight control system
The sense (direction) of outer-loop commands is compared with the sense (direction) of inner-loop signals in an aircraft AFCS. A disparity in sense indicates an outer-loop failure. To reduce...
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4580223 |
Incorporation of pitch bias actuator function into an existing AFCS
An aircraft automatic flight control system (AFCS) includes a pair of fast, limited authority inner loop actuators responsive to signals indicative of aircraft attitude or other flight parameters...
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4500967 |
Aircraft short-term roll attitude retention system
An automatic flight control system, for an aircraft having a roll attitude retention outer loop actuator (29), a roll stability inner loop actuator (25) and a control stick (26) for positioning...
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4460964 |
Multiaxis hardover protection apparatus for automatic flight control systems
A hybrid analog/digital autopilot utilizing analog inner loops in each control axis of the aircraft and a digital processor for providing outer loop commands and inner loop gain augmentation...
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4417308 |
Dual inner loop fault inhibit of aircraft outer loop
In an automatic flight control system, failure of dual inner loop actuators (12, 13) to track position (22, 23) within a permissible tolerance (182) of each other will cause automatic shut down...
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4387432 |
Pulsed aircraft actuator
In an aircraft automatic flight control system, proportional commands (54, 55) provided to fast, limited authority inner loop actuators (12, 13) are integrated (41), and when the integrator output...
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4387431 |
Roll attitude inhibit of aircraft automatic outer loop
In an aircraft automatic flight control system (FIG. 4) the application of force to a control member (35R, FIG. 5) forces (222, 216, 217, 212, 213) the flight path controlling, full authority outer...
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4387430 |
Pitch stick force inhibit of aircraft automatic outer loop
In an aircraft automatic flight control system, a flight path controlling, full authority outer loop actuator (37) operated in response to the integral (41) of commands thereto, is shutdown (111,...
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4385355 |
Automatic outer loop centering of aircraft inner loop
An aircraft automatic flight control system includes a pair of fast, limited authority inner loop actuators (12, 13) responsive to signals (52-55) indicative of aircraft attitude (68, 69) or other...
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4330829 |
Helicopter flight stability control induced oscillation suppression
Oscillations in helicopter attitude sustained by the aerodynamic response of the helicopter to an automatic flight control system which is responsive to an attitude sensor, are eliminated by band...
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