| Patent Number |
Title Of Patent |
Date Issued |
| 7622821 |
Power distribution system and load management protocol therefor |
November 24, 2009 |
| An Auxiliary Power System includes an APU controller and an aircraft load controller which include an APU load capacity algorithm which provides an uncomplicated and robust method of APU load control. The APU load capacity algorithm defines three load zones: a continuous APU load cap |
| 7622726 |
Dual neutron-gamma ray source |
November 24, 2009 |
| A dual neutron-gamma ray source comprises a compact neutron generator, a shield, a collimator, and an internal gamma target. The shield surrounds the compact neutron generator. The collimator traverses the shield from the compact neutron generator to a collimator port. The internal gamma |
| 7622709 |
Variable-ratio neutron-gamma ray source |
November 24, 2009 |
| A variable-ratio neutron-gamma ray source comprises a neutron generator, a shield, a collimator, and an external gamma target. The neutron generator generates neutrons and the shield reduces external radiation exposure. The collimator collimates the neutrons into a neutron beam that trav |
| 7619327 |
Hybrid electromechanical power transfer system |
November 17, 2009 |
| An electromechanical power transfer system that transfers power between a prime mover and a combination of multiphase alternating current (AC) and direct current (DC) electrical power systems, comprises: a dynamoelectric machine that has a rotor assembly coupled to the prime mover, a mai |
| 7615881 |
Power turbine speed control using electrical load following |
November 10, 2009 |
| A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turb |
| 7609492 |
Ground fault interrupts for solid state power controllers |
October 27, 2009 |
| A solid state power control scheme is provided with a ground fault interrupt function. Essentially, if a neutral wire is associated with the power supply, the current is sensed in that neutral wire. The sensed neutral wire current is subtracted from a summed current on the power supp |
| 7608185 |
Hollow fiber membrane modules for use in distillation systems |
October 27, 2009 |
| A membrane module comprising an outer casing having an interior region, a seal disposed within the outer case, thereby dividing the interior region into a first chamber and a second chamber, and a plurality of hollow fiber membranes extending through the first chamber and the second |
| 7601208 |
Water-from-air using liquid desiccant and vehicle exhaust |
October 13, 2009 |
| A water production unit is provided that uses liquid desiccant and vehicle exhaust for extracting water from air. |
| 7601037 |
Terminal with multiple wire connection |
October 13, 2009 |
| An electrical connection for securing multiple wires within an interior of an electrical connector barrel includes the use of a spacer which is received within the barrel, and which includes guiding spaces to position the plurality of wires. |
| 7600417 |
Ultrasonic-densiometer mass flow sensor for use in flow metering units |
October 13, 2009 |
| A fuel delivery system uses a volumetric flow sensor and a densiometer to measure a mass flow rate of the fuel. A densiometer may be a coriolis mass flow sensor etched into a small circuit chip. As fuel flows past the densiometer a density of the fuel and characteristic slope as a functi |
| 7597000 |
Top view liquid sight level indicator |
October 6, 2009 |
| A top reading liquid sight level indicator mounts above a liquid contained in a liquid vessel comprises a measuring surface mounted to the liquid vessel that penetrates an upper surface of the contained liquid at a cant from normal to the liquid surface so that the points along the measu |
| 7592784 |
Power manager for an electrical power generator |
September 22, 2009 |
| An electrical power generator includes a controller for making a full power capacity of the generator available for consumption by at least one intelligent load coupled to an output of the generator. The controller obtains data from which both a present output power of the generator and |
| 7586224 |
Rotating rectifier assembly |
September 8, 2009 |
| A rectifier assembly includes individual diodes arranged to form a full-wave bridge such that the silicon wafers of the diodes are loaded in compression. As so arranged, the centrifugal forces add to the compression forces on the diodes and on the electrical contacts therewith. The t |
| 7586204 |
Permanent magnet alternator speed detection circuit with feedback at lower speeds |
September 8, 2009 |
| A permanent magnet alternator is driven by a turbine engine to supply three phases of power to a control circuit for the engine. A shunt regulator delivers current to the control circuit, and a voltage supply is also included to deliver power for a period of time as the alternator is |
| 7584782 |
Valve defining modulated and unmodulated flow paths |
September 8, 2009 |
| A valve comprises an inlet portion configured to couple to a source of a fluid, and a body portion in fluidic communication with the inlet portion. The body portion defines a modulated flow path and a constant flow path adjacent to the modulated flow path. |
| 7583046 |
Rotor position detection at standstill and low speeds using a low power permanent magnet machine |
September 1, 2009 |
| For a multiphase alternating current (AC) wound field synchronous machine (WFSM) that has a stator with a selected number of poles, the WFSM having an associated exciter and multiphase AC permanent magnet machine (PMM) directly coupled to the WFSM, a method of sensing the position of a r |
| 7581929 |
Rotational airfoil balance system |
September 1, 2009 |
| A balance system for a rotational airfoil assembly includes a bulkhead, an elongated member, a support member and at least one balance weight. The elongated member extends through the bulkhead along a bore toward an airfoil tip segment of the airfoil assembly. The balance weights are |
| 7581515 |
Control scheme for an evaporator operating at conditions approaching thermodynamic limits |
September 1, 2009 |
| A heat exchanger assembly includes a plurality of evaporative heat exchangers that are selectively feed evaporant to tailor operation to current heat load in order to maintain operation in thermodynamically extreme operating conditions. |
| 7578870 |
Fluid separating device |
August 25, 2009 |
| A fluid separator device allows for introducing air entrained in a liquid flow to a centrifugal pump in a manner that will not allow the pump to become gas bound. One example device designed according to this invention includes a housing having an inlet and an outlet downstream of the in |
| 7578369 |
Mixed-flow exhaust silencer assembly |
August 25, 2009 |
| An exhaust silencer assembly comprising a casing having an exhaust gas entrance opening, an exhaust gas exit opening, and a cooling air inlet opening, and an acoustic-attenuating porous liner disposed within an interior chamber of the casing, thereby dividing the interior chamber int |
| 7577545 |
Method and system for estimating rotor angular position and rotor angular velocity at low speeds |
August 18, 2009 |
| A method and system for estimating an angular position and an angular velocity of a rotor in a dynamoelectric machine measures an AC current and a potential for each of a plurality of windings coupled to a stator of the dynamoelectric machine, transforms the measured currents and pot |
| 7575421 |
Integral motor cooling and compressor inlet |
August 18, 2009 |
| A compressed air unit is provided having a motor housing with a main motor housing having a cavity. A motor is arranged within the cavity and a compressor rotor is connected to the motor. A cooling duct is integral with and extends from the main housing body. The cooling duct is in fluid |
| 7571596 |
Vacuum system for membrane fuel stabilization unit |
August 11, 2009 |
| Oil system components for a turbine engine are used to provide a vacuum system for a fuel stabilization unit (FSU). A vacuum system pulls oxygen and other contaminants from fuel into a vacuum chamber within the FSU. The vacuum system pumps the discharge through a vacuum outlet in the FSU |
| 7571275 |
Flash real-time operating system for small embedded applications |
August 4, 2009 |
| A flash real time operating system for embedded applications employing flash memory is capable of storing and accessing individual bytes of data corresponding to a particular logical address in real time. The operating system writes data bytes to sequential physical blocks within the fla |
| 7567047 |
Electric motor control strategies for using a low resolution position sensor |
July 28, 2009 |
| An electric motor control strategy includes using a low resolution position sensor that provides a square wave output signal. The position sensor information is converted into sinusoidal commutation signals for motor control that reduces torque ripple. In one disclosed example, squar |
| 7559696 |
Active thrust management system |
July 14, 2009 |
| An active thrust management system varies pressure responsive to changes in rotor assembly thrust to maintain a desired position. The system includes a bearing supporting rotation of a rotor assembly within a pressurizing chamber. The rotor assembly is supported on a cushion of air g |
| 7558036 |
High speed lightning regulator circuit with self test attributes |
July 7, 2009 |
| A system for regulating high speed voltage surges, particularly as a result of lightning strikes, which includes a transistor, an isolated voltage provider, and an array of voltage regulating electrical components, where the isolated voltage provider maintains the transistor in a ful |
| 7550953 |
Coarse voltage regulation of a permanent magnet generator (PMG) |
June 23, 2009 |
| A permanent magnet generator voltage regulation system controls the output voltage of a permanent magnet generator. The output voltage of the permanent magnet generator is controlled by configuring the electrical connection of the stator coils. A monitoring device monitors the output |
| 7540141 |
Smart fuel control system |
June 2, 2009 |
| A fuel control system uses a fuel pump powered by a variable speed pump motor controlled by a closed loop electronic feedback system that tracks motor speed and corrects fuel pump motor speed so that the fuel pump delivers flow according to a desired flow schedule based on the pressure |
| 7538990 |
High voltage DC contactor hybrid without a DC arc break |
May 26, 2009 |
| An apparatus, and a method of opening and closing electrical power feed lines using a hybrid contactor, which combines a traditional set of mechanical main contacts with a high voltage solid state switch. The solid state switch provides a parallel current path around the main contact |
| 7538684 |
Circuit health monitoring system and method |
May 26, 2009 |
| A system and method that provides early warning of a capacitor failure before it causes a functional failure by including a plurality of redundant capacitive elements arranged in parallel in a capacitor module. A monitor measures a value corresponding to the total capacitance of the |
| 7529268 |
Multi-point electronic control system protocol |
May 5, 2009 |
| A generic software protocol allows communication between multiple devices within an electronic control system as well as between an electronic control system and an external monitoring device. The generic software protocol is reflected in embedded software in each device in the elect |
| 7528499 |
Method and system for facilitating no-break power transfer |
May 5, 2009 |
| An improved method and system for facilitating no-break power transfer between an APU and a main engine includes determining a required APU speed for conducting power transfer based on various APU operating parameters, such as engine speed, fuel, environmental temperature, etc. The A |
| 7528497 |
Wind-turbine with load-carrying skin |
May 5, 2009 |
| A horizontal axis wind-turbine includes a stationary support structure, a two-bladed rotor supported by the stationary support structure, and a hollow shaft rotationally attached to the stationary support structure through a bearing. Teeter hinges are spaced apart from each other and |
| 7527479 |
Mechanical coupling for a rotor shaft assembly of dissimilar materials |
May 5, 2009 |
| A mechanical coupling for coupling a ceramic disc member to a metallic shaft includes a first wedge clamp and a second wedge clamp. A fastener engages a threaded end of a tie-bolt to sandwich the ceramic disc between the wedge clamps. An axial spring is positioned between the fastener an |
| 7523622 |
Aircraft galley chiller system |
April 28, 2009 |
| A galley chiller system for an aircraft includes at least one condenser having a refrigerant fluid. The fluid within the condenser rejects heat to a first surrounding environment. To more efficiently use the condenser of the galley chiller system and reduce the requirement on other cooli |
| 7521906 |
Generating system with a regulated permanent magnet machine |
April 21, 2009 |
| An electromechanical power transfer system that transfers power between a prime mover and a direct current (DC) electrical power system, comprises: a permanent magnet machine (PMM) that has a permanent magnet (PM) rotor coupled to the prime mover, a stator with a multiphase alternating |
| 7518838 |
Protection of variable frequency power systems from excessive peak electrical potentials |
April 14, 2009 |
| A method of protecting an electromechanical power transfer system from excessive peak electrical potentials, the power transfer system comprising a prime mover, a dynamoelectric machine coupled to the prime mover for generating multiphase alternating current (AC) power, and at least |
| 7516621 |
Modular LRU accessory mounting substrate for auxiliary power unit |
April 14, 2009 |
| A multiple accessory support bracket that mounts a plurality of external accessories for an auxiliary power unit (APU) so that all the external accessories may be mounted to the APU in a single operation. |
| 7511392 |
Rotating rectifier module |
March 31, 2009 |
| A rotating rectifier module for rectifying a multiphase alternating current signal provided by a multiphase alternating current power supply includes a housing, a circuit board, a plurality of input terminals, a first output terminal, a second output terminal, and a plurality of rect |
| 7509968 |
Flow control for on-board inert gas generation system |
March 31, 2009 |
| An on-board inert gas generating system includes a flow control valve modulated according to changes in ambient conditions to minimize changes to oxygen content within a fuel tank. The quality of the nitrogen-enriched air stream that is provided by the air separation module varies in |
| 7509812 |
Dual ignition system for a gas turbine engine |
March 31, 2009 |
| A dual channel ignition circuit (Channel A and a Channel B). In a start sequence in which a successful ignition event occurs, an exciter controller first energizes only a primary ignition channel (Channel A). Once the exciter controller recognizes a success light-off, the alternate c |
| 7501799 |
Engine start system with a regulated permanent magnet machine |
March 10, 2009 |
| An electromechanical power transfer system that transfers power between a direct current (DC) electrical power system and a prime mover, comprises: a permanent magnet machine (PMM) comprising a permanent magnet (PM) rotor that rotates a drive shaft of the prime mover, a stator and a cont |
| 7495353 |
Power interconnect block for an aircraft electrical component |
February 24, 2009 |
| The power system for an aircraft includes a gear box. Multiple generators are driven by the gear box and are arranged in a circumferentially spaced manner, in one example. Each generator includes a power interconnect block providing a receptacle that receives an electrical lead. The |
| 7492594 |
Electronic circuit modules cooling |
February 17, 2009 |
| A cooling structure for electrical circuit devices having a pair of cooling ducts, each having a coolant passageway therein, and an electrical circuit device housing formed by a pair of spaced apart heat transfer plates each joined to a housing side to provide a sealed housing space. |
| 7486053 |
Power manager for an electrical power generator |
February 3, 2009 |
| An electrical power generator includes a controller for making a full power capacity of the generator available for consumption by at least one intelligent load coupled to an output of the generator. The controller obtains data from which both a present output power of the generator and |
| 7479746 |
Power converter for an electric engine start system |
January 20, 2009 |
| An electric engine starting system includes a permanent magnet motor that is used to start the engine and then to generate power for powering a load while the engine is running. A disclosed system includes a first phase controlled rectifier in series with a power converter and a second |
| 7475549 |
Thermal management system for a gas turbine engine |
January 13, 2009 |
| A thermal management system for a gas turbine engine includes a cooling airflow which enters through an air filter portion of a forward cover for filtration of particulate which may result in FOD to a rotational system of the engine. Filtered cooling airflow flows along a rotor shaft ove |
| 7472547 |
Hydraulic differential for integrated drive generator |
January 6, 2009 |
| A hydraulic differential with a variable displacement hydraulic unit of the axial piston type, a fixed displacement hydraulic unit of the axial piston type, a stationary housing for mounting the hydraulic units, an input shaft for coupling to a variable speed power source and an output |
| 7466088 |
Signal control for motor position determination |
December 16, 2008 |
| A controller estimates a motor position. The controller includes a driver and an injector. The driver generates a fundamental control signal. The injector generates a position carrier voltage that superimposed on the fundamental control signal. The injector alters the magnitude of the |
