Abstract: A circuit for detecting and automatically responding to ground faults. A passive protection PTC resistor is coupled in series with an active protection switch, the active protection switch being controlled by a control circuit to open the switch when excess current is detected to be flowing in the common path of one of the channels. Floating and grounded versions are described.

Abstract: Selected olefins such as ethylene and &agr;-olefins are polymerized by nickel [II] complexes of certain monoanionic ligands. The polyolefins are useful in many applications such as molding resins, film, fibers and others. Also described are many novel nickel compounds and their precursors, as well a novel ligands.

Abstract: An aircraft automatic or semiautomtic vertical path control system which coordinates operation of pitch and engine thrust control systems to transfer speed control from one system to the other depending on a requirement to climb, descend, or maintain altitude as determined by the polarity and magnitude of the difference between a selectable desired altitude and current actual altitude.

Abstract: An aircraft automatic of semiautomatic vertical path control system which coordinates operation of pitch and engine thrust control systems to transfer speed control from one system to the other depending on a requirement to climb, descend, or maintain altitude as determined by the polarity and magnitude of the difference between a selectable desired altitude and current actual altitude.

Abstract: An aircraft automatic or semiautomatic vertical path control system which coordinates operation of pitch and engine thrust control systems to transfer speed control from one system to the other depending on a requirement to climb, descend, or maintain altitude as determined by the polarity and magnitude of the difference between a selectable desired altitude and current actual altitude.

Abstract: Apparatus for transmitting particular output signals from a plurality of analog-to-digital converters to the guidance computer of an inertial navigation system. The number of channels of signals to be transmitted exceeds the number of available data lines. The A/D converter output is converted, according to its particular logic code, to a series of pulse counts which are thereafter multiplexed in a pulse combiner and applied to the data lines. During a first selected time interval, the pulses are accumulated for interleaving and transmission with the real time pulses in a second selected time interval. The multiplexing combines such interleaved pulses from one A/D converter output with those from another such output in alternate time intervals. Sync words are transmitted along with the data to permit the guidance computer software to demultiplex the data.

Abstract: The invention relates to a system utilizing an exponential control law for glide slope capture. The capture maneuver from above or below the beam, is a function of decreasing glide slope beam error. The present autopilot approach coupler is an altitude rate command system which provides switchless signal processing during glide slope capture, and tracking.

Abstract: A system for generating an optimum vertical speed command and controlling the aircraft to this command by allowing the aircraft to assume an optium trimmed condition for the thrust energy available which system utilizes the aircraft autopilot system.

Abstract: A system for generating an optimum vertical speed command and controlling the aircraft to this command by allowing the aircraft to assume an optimum trimmed condition for the thrust energy available which system utilizes the aircraft autopilot system.

Abstract: An aircraft flight control system utilizing inertial sensor input signals for providing glide slope and flare control signals in the aircraft. The autopilot approach and landing coupler system is a vertical velocity command control system utilizing signals representative of integrated vertical acceleration for providing feedback signals representative of vertical velocity and utilizing signals representative of ground velocity to provide the switchless glide slope and flare vertical velocity command signals.

Abstract: Guidance along the runway centerline when visibility conditions do not permit adequate visual cues for manual control are provided utilizing lateral acceleration and bank angle information. An aircraft type airborne vehicle can touchdown with a crab angle in the presence of a crosswind and the present system provides the proper command to decrab the aircraft and return the aircraft to the centerline.

Abstract: The invention relates to a system utilizing an exponential control law for glide slope capture. The capture maneuver from above or below the beam, is a function of decreasing glide slope beam error. The present autopilot approach coupler is an altitude rate command system which provides switchless signal processing during glide slope capture, and tracking.

Abstract: A rate-limited, signal magnitude limited, non-linearized lag circuit for processing glide slope error signals to reject noise and reduce aircraft response to hardover signals due to ground transmitter malfunctions or other anomalies. A feature of an embodiment includes a logic circuit connected to the lag circuit for preventing aircraft deviation due to hardover signals.