Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Control systems and methods for controlling an engine. The control system includes a computation module and an input/output (I/O) module attached to the engine. The computation module is located in an area of the engine, or off-engine, that provides a more benign environment than the environment that the I/O module is subject to during operation of the engine. The I/O module includes a first processor and a first network interface device. The computation module includes a second processor with higher processing power than the first processor, and a second network interface device. The control system also includes a sensor configured to provide sensor readings to the first processor. The first processor transmits data based on the sensor readings to the second processor. The control system also includes an actuator operably coupled to the I/O module and that is controlled by the first processor based on commands from the second processor.

Abstract: Technologies for engine fluid quality monitoring are disclosed herein. An engine system includes a sensor and an engine controller. The sensor generates sensor data indicative of a fluid property of engine fluid of a gas turbine engine of the engine system. The engine fluid may be engine oil or fuel. The fluid quality may be viscosity, water content, calorific content, specific gravity, heating value, or the presence of contaminants in the engine fluid. The engine controller determines the fluid property based on the sensor data and outputs the fluid property. The fluid property may be stored in non-volatile storage. A user alert such as a cockpit alert may be generated based on the fluid property. A control law of the gas turbine engine may be modified as a function of the fluid property. The engine controller may include the sensor.

Abstract: Technologies for engine fluid quality monitoring are disclosed herein. An engine system includes a gas turbine engine having one or more mechanical components, a fluid quality sensing system, and an engine controller. Each mechanical component includes a tracer material embedded in the mechanical component during manufacture. The fluid quality sensing system applies a laser beam to debris captured in an engine fluid of the gas turbine engine and detects a light signature generated by tracer material in the debris in response to application of the laser beam. The engine controller identifies the tracer material as a function of the light signature. The engine controller determines a potential wear state of a mechanical component as a function of the tracer material. The engine controller may select the mechanical component from multiple mechanical components based on the tracer material. Each mechanical component has a predetermined association with a corresponding tracer material.

Abstract: A gas turbine engine control system is disclosed having a fault detection system capable of detecting a high N1 condition. N1 rotational speed is measured and, in two different locations, subtracted from a target N1 value and a requested N1 value. The resultant error values are scaled by a gain that is scheduled as a function of N2 rotational rate. Each error value is accumulated with separate integrators that have independent maximum and minimum limits. The integrators are reset based upon a number of conditions. A number of additional conditions must also be satisfied for the fault detection system to trigger a fault condition. If the additional conditions are satisfied and the integrators are accumulating values, then a fault condition is set if either or both integrators accumulate a value that reaches a selected limit.

Abstract: A gas turbine engine control system is disclosed having a fault detection system capable of detecting a high N1 condition. N1 rotational speed is measured and, in two different locations, subtracted from a target N1 value and a requested N1 value. The resultant error values are scaled by a gain that is scheduled as a function of N2 rotational rate. Each error value is accumulated with separate integrators that have independent maximum and minimum limits. The integrators are reset based upon a number of conditions. A number of additional conditions must also be satisfied for the fault detection system to trigger a fault condition. If the additional conditions are satisfied and the integrators are accumulating values, then a fault condition is set if either or both integrators accumulate a value that reaches a selected limit.

Abstract: An apparatus for carrying out horizontal gel electrophoresis for separation and subsequent vacuum-assisted transportation of macromolecules to a support membrane to facilitate detection. The entire procedure is conducted in one cartridge. A method for conducting electrophoresis and subsequent vacuum assisted transfer using the apparatus of the present invention is also disclosed.

Abstract: An apparatus for carrying out horizontal gel electrophoresis for separation and subsequent vacuum-assisted transportation of macromolecules to a support membrane to facilitate detection. The entire procedure is conducted in one cartridge. A method for conducting electrophoresis and subsequent vacuum-assisted transfer using the apparatus of the present invention is also disclosed.

Abstract: An apparatus for carrying out horizontal gel electrophoresis for separation and subsequent vacuum-assisted transportation of macromolecules to a support membrane to facilitate detection. The entire procedure is conducted in one cartridge. A method for conducting electrophoresis and subsequent vacuum-assisted transfer using the apparatus of the present invention is also disclosed.

Abstract: An apparatus for carrying out horizontal gel electrophoresis for separation and subsequent vacuum-assisted transportation of macromolecules to a support membrane to facilitate detection. The entire procedure is conducted in one cartridge. A method for conducting electrophoresis and subsequent vacuum-assisted transfer using the apparatus of the present invention is also disclosed.

Abstract: A device for reading information representing magnetization patterns on a medium by means of a time-of-flight magnetotransistor detector. The time-of-flight magnetotransistor detector consists of a bipolar transistor implemented on a semiconductor surface which is in a magnetic flux coupling with a plurality of magnetization patterns. Such magnetization patterns which may be generated by a magnetic bubble domain on an adjacent bubble domain device or by a magnetized region on an adjacent media such as a magnetic tape or disk. The magnetotransistor detector consists of an emitter region, an elongated base region, and a collector region, and a twin-lead thin-film transmission line in capacitive coupling with the base region of the magnetotransistor. The presence of a magnetic field in the base region creates a Hall voltage which produces a pulse on the transmission line.

Abstract: A parametric amplifier including a semiconductor body portion (10) comprising a plurality of zones (11,13,15, . . . ) of a first conductivity type, each of the zones having a thickness less than or equal to the Debye length in the semiconductor body portion (11,13,15, . . . ), each of the zones being separated from one another by corresponding insulating layers (12,14, . . . ). The body portion has a first edge portion abutting a first edge of the plurality of zones, and a second edge portion abutting a second edge of the plurality of zones spaced apart from said first edge.A first interface (20) is provided adjacent the first edge portion for transmitting an electromagnetic wave into the semiconductor body portion for propagation therein; and a second interface (21) is provided adjacent the second edge portion for receiving an electromagnetic wave propagating in the body portion.

Abstract: A method of fabricating a bubble domain device composite structure on a substrate of depositing a barrier layer of a suitable polymeric dielectric material on the substrate; subsequently depositing a layer of electrically conductive material thereover; subsequently depositing a spacer layer of a liquid polymeric dielectric material over the conductive layer; processing the spacer layer so that the surface of the spacer layer is substantially planar; and subsequently depositing a layer of a magnetically operative material over the spacer layer.

Abstract: A method for controlling the resonance frequency of single crystal yttrium iron garnet (YIG) films by incorporating lead as a partial substituent for the yttrium component of the YIG film.

Abstract: Semiconductor devices with gate dimensions as small as 0.25 microns square have been fabricated using electron beam lithography and dry processing techniques. In particular, silicon gate, N-channel, metal-oxide-semiconductor (NMOS) field-effect-transistors (FET) have been produced. The devices and the process are especially adapted to bulk silicon based transistors.