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| Number | Title | Issue Date |
| 6925810 | Gas turbine engine transition liner assembly and repair A method of repairing a damaged combustion gas transition liner for a gas turbine engine and an improved damage-resistant transition liner that mounts adjacent to the edge of one of the engine's combustion chambers. In a particular embodiment, the gas turbine engine... | 08/09/2005 |
| 6922625 | Jet engine control and protection system and method A highly reliable, multi-channel control, monitoring, and protection system includes at least three processors in each of the redundant channels, a main processor, and first and second monitor processors. The main processor performs the main control functions, and t... | 07/26/2005 |
| 6921998 | Energy storage flywheel auxiliary bearing system and method An energy storage flywheel system includes a shaft, one or more primary bearing assemblies, and one or more secondary bearing assemblies. A secondary bearing control circuit determines the operability of the primary bearing assemblies and, based on this determinatio... | 07/26/2005 |
| 6909263 | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p... | 06/21/2005 |
| 6897581 | High speed generator with the main rotor housed inside the shaft A high speed generator has its main rotor located within the main generator shaft assembly. The main rotor is mounted on a substantially hollow rotor shaft, which is also mounted within the main generator shaft assembly. The main stator surrounds at least a portion ... | 05/24/2005 |
| 6897584 | High power terminal block assembly for generators and method of assembling and installing the same A terminal block assembly for electrical generators, such as high speed AC generators used in aircraft, is made from components that are readily assembled and disassembled for ease of installation, maintenance, and repair. The terminal block assembly is formed of a ... | 05/24/2005 |
| 6892745 | Flow control valve with integral sensor and controller and related method A flow control valve assembly, and a method of determining and controlling fluid flow through the valve, that is relatively simple in design, is relatively inexpensive, is accurate, and has a relatively wide measurement range. The flow control valve is relatively co... | 05/17/2005 |
| 6883224 | Gas turbine impeller alignment tool and method An apparatus and method for centering a shaft (for an impeller or other rotating component) in a gas turbine engine, such as that used in aircraft or other vehicles. The apparatus includes a base, at least one arm and an actuator. The arm is connected to the base an... | 04/26/2005 |
| 6882072 | Energy storage flywheel system with a power connector that integrally mounts one or more controller circuits An energy storage flywheel system that includes a power connector extending through the flywheel housing assembly and is hermetically sealed thereto. A circuit board, on which is mounted at least a motor/controller circuit, is coupled to the power connector adjacent... | 04/19/2005 |
| 6879083 | Generator rotor coil end-turn retention system and method The coil end-turn segments of a generator exciter rotor are retained using an end-turn retention assembly that includes an inner band and an outer band. The inner band is located around at least a portion of each of the end-turn segments and has two ends. The outer ... | 04/12/2005 |
| 6860464 | Electromechanical/pneumatic rocket engine valve actuator A valve actuator assembly is provided for selectively opening and closing a valve. The valve actuator assembly includes a primary motor and secondary motor both operatively coupled to an output shaft and adapted to receive valve position commands and operable, in re... | 03/01/2005 |
| 6859019 | System and method for coupling rectifiers of an exciter to the rotor of a main generator A system and method for electrically coupling windings of a main generator rotor to a plurality of DC sources on an exciter that each have respective first-voltage and second-voltage terminals is disclosed. The system includes first and second conductive plates supp... | 02/22/2005 |
| 6849962 | Ground based aircraft electrical power generation system having a voltage regulator that selects from multiple points of regulation A ground-based aircraft electrical power generation system for regulating the electrical power to an aircraft being serviced on the ground. The aircraft electrical power generation system may include a ground power cart, a power source located on the ground power ca... | 02/01/2005 |
| 6850402 | Circuit and method for controlling current flow through a solenoid A solenoid control circuit that includes two switching networks that are selectively opened and closed in a current limit cycle to control the magnitude of the current flowing through the solenoid. The configuration of the switching networks is such that current flo... | 02/01/2005 |
| 6848651 | Electro-hydraulic thrust reverser lock actuation system and method An electro-hydraulic thrust reverser lock actuation system includes a hydraulic fluid source and a lock actuator assembly that is configured to selectively pressurize the hydraulic fluid. The lock actuator assembly is adapted to receive a lock control signal and, in... | 02/01/2005 |
| 6849987 | System and method for end turn retention on a high speed generator rotor A new improved system and method for end turn retention for wires on a generator rotor for use in high speed applications such as in aircraft applications. The rotor includes a shaft, spokes, supports, and wire winding coils, and at least one cap device. The spokes ... | 02/01/2005 |
| 6845952 | Flywheel prognostic health and fault management system and method A prognostic health and fault management system and method that accurately determines the health and rate of degradation of one or more flywheel systems, by comparing actual and simulated responses of flywheel systems to supplied command signals. Based on the determ... | 01/25/2005 |
| 6831237 | Swing arm switch actuator assembly An apparatus is provided for activating switches in a leading edge flap drive actuator. The apparatus comprises a mount plate having at least a first side, a second side, and an outer peripheral surface, an actuator arm rotationally coupled to the mount plate and ro... | 12/14/2004 |
| 6827311 | Flight control actuation system A flight control actuation system comprises a controller, electromechanical actuator and a pneumatic actuator. During normal operation, only the electromechanical actuator is needed to operate a flight control surface. When the electromechanical actuator load level ... | 12/07/2004 |
| 6821313 | Reduced temperature and pressure powder metallurgy process for consolidating rhenium alloys Pressure powder metallurgy process for consolidating refractory or rhenium alloys using a reduced temperature and elevated pressure. Rhenium metal has high temperature strength and wear resistance but has a very high melting point as a pure metal and thus is difficu... | 11/23/2004 |
| 6814539 | High energy particle arrestor for air turbine starters One or more particle arrestors are mounted in a curved radial flow portion of a gas turbine starter annular flow passage, between a fluid inlet and a fluid outlet. The one or more arrestor rings block line of sight paths between the turbine wheel and the annular flo... | 11/09/2004 |
| 6814191 | Thrust reverser system with a pass-through torque activated brake A thrust reverser system that includes a pass-through torque activated brake assembly that limits the torque applied in portions of the thrust reverser system drive train. The brake assembly includes two plates that are coupled together with a torsion spring. When a... | 11/09/2004 |
| 6810656 | Thrust reverser system power drive unit with dual sequential torque decoupler and method A thrust reverser system that includes one or more power drive units operable to supply a drive force. The power drive unit includes a motor and at least two output sections, each operably coupled to transmit the drive force to the thrust reverser movable components... | 11/02/2004 |
| 6806611 | Stator assembly for electrical machines and method of making the same A stator for a rotating electrical machine, such as a motor or generator, is wound with stator coils having non-slot-insertion segments that include a twisted segment that is twisted a predetermined number of degrees. The twisted segment is additionally bent at a pr... | 10/19/2004 |
| 6792338 | System and method for actively limiting the power drawn from a power distribution bus A control system (10) actively limits the power drawn from a main power distribution bus (20) by one or more electric loads (30). The system (10) includes circuitry (14) for determining a maximum permissible current magnitude that ... | 09/14/2004 |
| 6791230 | System and method for retaining wedges in a rotor A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each c... | 09/14/2004 |
| 6786315 | Thrust reverser system with sequential torque decoupler An aircraft thrust reverser system that includes a power drive unit operable to supply a drive force. The power drive unit includes a motor and a torque decoupler that sequentially decouples the power drive unit from a plurality of loads. The torque decoupler includ... | 09/07/2004 |
| 6786039 | Thrust reverser actuator with an automatic relock and lock drop prevention mechanism A thrust reverser system includes one or more actuators each having a locking mechanism that prevents unintended actuator movement, and thus unintended thrust reverser movement. Each of the actuators additionally includes a lock inhibitor assembly that engages the l... | 09/07/2004 |
| 6783114 | Cable assembly and air outflow valve incorporating the same An improved air outflow valve having a cable assembly that enhances its reliability. In a particular embodiment, the cable assembly couples the diaphragm to the control arm of the air outflow valve and includes a retainer and a cable. The retainer has a cavity to sl... | 08/31/2004 |
| 6779759 | Integrated power and attitude control system and method An integrated power and attitude control system that includes a plurality of flywheels and a controller. The controller receives power commands and attitude commands and determines the optimum set of flywheel acceleration and gimbal velocity commands to supply to ea... | 08/24/2004 |
| 6773663 | Oxidation and wear resistant rhenium metal matrix composites An alloy and metal matrix composite (MMC) based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. Rhenium enjoys excellent high temperature strength but oxidizes at... | 08/10/2004 |
| 6768278 | Gas turbine engine starter generator with switchable exciter stator windings A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sections and are configured and c... | 07/27/2004 |
| 6761628 | Control system and method for implementing fixed cabin pressure rate of change during aircraft climb An aircraft cabin pressure control system that controls cabin altitude during aircraft ascent to a cruise altitude, such that, under most operational circumstances, the cabin altitude rate of change during the ascent is set to fixed value. The system uses a signal r... | 07/13/2004 |
| 6759771 | High speed generator with integrally formed rotor coil support wedges A coil support wedge for a high speed generator is integrally constructed and includes a plurality of flow passageways. Because it is integrally formed, the support wedge is substantially fluid tight. Thus, it is less susceptible to cooling fluid leakage from the fl... | 07/06/2004 |
| 6751942 | System for controlling fuel flow to gas turbine engine A system for controlling the flow of fuel to a gas turbine engine is operable in at least two modes. In a first mode, the flow rate of fuel supplied from a fuel source to the combustors of the turbine engine is controlled by modulating the position of a metering val... | 06/22/2004 |
| 6749803 | Oxidation resistant rhenium alloys An alloy based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. This alloy has excellent high temperature strength and will resist oxidation. The alloy includes ox... | 06/15/2004 |
| 6746156 | Ceramic ball bearings and assembly A ceramic ball bearing assembly has raceway components generally held in residual compression by accompanying metal attachments. In a ceramic ball bearing assembly, an outer raceway is formed that is held in compression by a circumscribing steel ring. The components... | 06/08/2004 |
