Patents Assigned to Hamilton Sundstrand Corporation
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Publication number: 20120268974Abstract: A phase detection system includes a low-resolution sensor and a high-resolution sensor for monitoring an alternating current (AC) voltage. A phase detector receives voltage samples from both the low-resolution sensor and the high-resolution sensor. The phase detector monitors the low-resolution sensor to detect approaching zero cross events (i.e., monitored voltage values approaching zero). In response to an approaching zero-cross event, the phase detector uses the magnitude of the high-resolution voltage samples measured on either side of the zero cross event to determine the phase of the monitored AC voltage.Type: ApplicationFiled: April 22, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Souren G. Fattal, John Duward Sagona
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Publication number: 20120269634Abstract: A driveshaft for an aircraft ram air turbine includes a substantially cylindrical elongate portion, a first end extending from the elongate portion, and a second end extending from the elongate portion opposite the first end. The first and second ends each include a substantially frusto-conical section having a curved generatrix, such that distal portions of each of the first and second ends have smaller outer diameters than an outer diameter of the elongate portion. The elongate portion provides relatively high lateral stiffness and the first and second ends provide relatively low torsional stiffness, such that the driveshaft has a lateral natural frequency higher than an operating range of the driveshaft and has a torsional natural frequency below the operating range of the driveshaft.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Stephen Michael Bortoli, Dustin L. Kaap
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Publication number: 20120269616Abstract: A driveshaft for an aircraft ram air turbine includes a tubular body and a flange. The tubular body defines an axis of rotation and includes a forward portion and a frusto-conical portion located rearward of the forward portion. The flange adjoins the forward portion of the tubular body opposite the frusto-conical portion, and has a forward face and an opposite rear face. A ratio of an outer diameter of the forward portion of the tubular body to an inner diameter of the forward portion of the tubular body is in a range of approximately 1.423 to 1.425.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Stephen Michael Bortoli, Dustin L. Kaap, Paul Henry Verstrate, Vladimir Korchagin
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Publication number: 20120266623Abstract: An electronic expansion valve (EEV) is employed in refrigeration systems to regulate the flow of refrigerant through an evaporator. The position of the EEV is controlled through a first control loop that generates a first position signal based on superheat feedback associated with the refrigeration system, and a second control loop that generates a second position signal based on pressure feedback associated with the refrigeration system. The larger of the first position signal and the second position signal is selected to control the position of the EEV value, and the selected position signal is provided in feedback to both the first control loop and the second control loop.Type: ApplicationFiled: April 21, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Tejendra Patel, Jeffrey Ernst, Bruce R. Schroder, Robert M. DeRoy, Kodjovi Coussey
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Publication number: 20120271527Abstract: A gas turbine engine includes a plurality of fuel injectors grouped operatively by stages in a multistage combustor. A fuel system for the gas turbine engine includes at least one fuel metering module per stage of the multistage combustor. Each fuel metering module includes a pump, a flow meter, a pressure sensor, a controller, and a motor, which work together to control fuel output.Type: ApplicationFiled: April 20, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Thaddeus J. Zebrowski, Richard E. Versailles
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Publication number: 20120267557Abstract: A butterfly valve having a valve body is provided. The butterfly valve includes a valve disk assembly rotationally coupled to the valve body. The valve disk assembly has a disk member with a first surface disposed about a periphery having a first diameter and a second surface offset from the first surface. A seal ring is arranged adjacent the first surface, the seal ring having a first outer surface with a second diameter, wherein the second diameter is larger than the first diameter. A retainer is coupled to the second surface adjacent the seal ring opposite the first surface. The retainer has inner surface arranged to radially constraining the seal ring on the disk member.Type: ApplicationFiled: April 21, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: William T. Lockwood, Scott W. Simpson
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Patent number: 8295046Abstract: A heat sink includes a blower located in the heat sink and a plurality of fins extending from a periphery of the blower toward a perimeter of the heat sink. The plurality of fins define a plurality of channels each having a channel inlet located at the blower and a channel exit located at the perimeter of the heat sink. The plurality of channels vary in length around the perimeter of the heat sink A velocity of an air flow from the blower at each channel inlet is substantially equal for each channel of the plurality of channels, and a total pressure drop from the channel inlet to the channel exit is substantially equal for each channel of the plurality of channels.Type: GrantFiled: July 19, 2010Date of Patent: October 23, 2012Assignee: Hamilton Sundstrand CorporationInventors: Brian St. Rock, Scott F. Kaslusky
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Patent number: 8294409Abstract: A ram air fan control system includes a ram air fan motor, the ram air fan motor being a pole-change induction motor with at least two pole-count configurations, a ram air fan contactor in operative communication with a first pole-count configuration of the ram air fan motor over a ram air fan conductor bus, a ram air fan power controller in operative communication with the ram air fan contactor, a common contactor in operative communication a second pole-count configuration of the ram air fan motor over a common conductor bus, the common conductor bus being separate and electrically isolated from the ram air fan conductor bus, and a common power controller in operative communication with the common contactor.Type: GrantFiled: August 18, 2010Date of Patent: October 23, 2012Assignee: Hamilton Sundstrand CorporationInventors: Waleed Said, Huazhen Chai
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Patent number: 8295995Abstract: A distributed electronic engine control system includes an airframe module, an electronic engine control module, and an engine I/O module. The modules are arranged in locations remote from one another. A serial communications bus interconnects the modules with one another. A first engine controls device is connected to the engine I/O module and is configured to interact with an engine component and provide a first data. The engine I/O module includes inner loop control logic that uses the first data and produces a second data in response thereto. The electronic engine control module includes an outer loop control logic using the second data and produces a third data in response thereto. The airframe module receives power and distributes the power to the electronic engine control and engine I/O modules. The first, second and third data are provided on the serial communications bus.Type: GrantFiled: April 22, 2009Date of Patent: October 23, 2012Assignee: Hamilton Sundstrand CorporationInventor: Richard A. Poisson
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Patent number: 8292219Abstract: This disclosure relates to a landing gear system that includes a landing gear strut rotatable between stowed and deployed positions. A lock-stay is connected to the landing gear strut and is movable between locked and unlocked conditions. An unlock actuator is connected to the lock-stay and includes first and second members movable relative to one another. The first member is movable between first and second positions that correspond to the locked and unlocked conditions. A controller is in communication with the unlock actuator and is configured to command the unlock actuator between the first and second positions in response to an input. The second member is permitted to free-drive relative to the first member between the stowed and deployed positions with the lock-stay in the unlocked condition.Type: GrantFiled: February 24, 2012Date of Patent: October 23, 2012Assignee: Hamilton Sundstrand CorporationInventor: Andrew John Collins
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Publication number: 20120263618Abstract: A pump gear is provided. The pump gear includes a first shaft portion having a first end and a second end with an integral gear portion formed therebetween. The first shaft portion is made from a first tool steel material. A second shaft portion having a third end brazed to the first end. The second shaft portion has at least one integral drive spline formed adjacent one end. The second shaft portion is made from a second tool material. The first tool steel material has a vanadium content by weight of greater than 9% and the second tool steel material has a vanadium content by weight of less than or equal to 1%.Type: ApplicationFiled: April 15, 2011Publication date: October 18, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Lyle Ward, Steven A. Heitz
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Publication number: 20120265466Abstract: A health monitoring system for monitoring the health of an electronic system. The health monitoring system includes an analog-to-digital converter, and a monitoring circuit within the electronic system. The monitoring circuit includes fatigue life characterized electrical components representative of electrical components comprising the balance of the electronic system. The fatigue life characterized electrical components are employed solely to monitor the health of the electronic system. The monitoring circuit output is electrically connected to the analog-to-digital converter.Type: ApplicationFiled: April 15, 2011Publication date: October 18, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Edward R. Morgana, Kevin P. Roy
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Patent number: 8289711Abstract: According to an example provided herein, a cold plate has a surface for mounting a component thereto, a first path to flow cooling fluid therethrough in a vicinity of the surface and a housing mounted on the surface that extends from the surface. The housing has a second path attaching to the first path to flow fluid to flow through the housing wherein the housing is designed to at least partially enclose the component and wherein the component is cooled by the housing.Type: GrantFiled: August 20, 2010Date of Patent: October 16, 2012Assignee: Hamilton Sundstrand CorporationInventor: Debabrata Pal
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Publication number: 20120255711Abstract: A thermal management system for a vehicle includes a tank, a heat exchanger, a pump, and a valve located on a conduit. The heat exchanger is located downstream of the tank, the pump is located between the tank and the heat exchanger, and the valve is located downstream of the heat exchanger. The heat exchanger places the coolant in a heat exchange relationship with a heat load from the vehicle such that the coolant vaporizes. The valve regulates pressure within the heat exchanger and controls exhaustion of the vaporized coolant from the vehicle. Water, used as a coolant, can be replenished in flight by condensing a portion of the heat exchanger exhaust or condensing water as part of the environmental control system function or by condensing a portion of the engine exhaust.Type: ApplicationFiled: April 7, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventor: Michael J. Andres
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Publication number: 20120255276Abstract: An actuator includes a first piston and a second piston. The first piston has a piston ring that separates a first chamber from a second chamber of the actuator. The first piston has an interior chamber that communicates with the first chamber. The second piston is disposed within the interior chamber of the first piston so as to be movable with respect thereto. The second piston has a surface that interfaces with the second chamber.Type: ApplicationFiled: April 11, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Leo J. Veilleux, Nicholas Moura
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Publication number: 20120257427Abstract: An active rectification system includes an active rectifier that converts an alternating current (AC) input to a direct current (DC) output. The active rectifier includes a plurality of switching devices and at least a first output capacitor and a second output capacitor connected at the DC output of the active rectifier. A controller includes a DC output regulation portion and an output capacitor balancing portion, wherein the DC output regulation portion monitors the DC output and in response generates control signals for regulating the DC output to a desired value. The output capacitor balancing portion monitors first and second output capacitor voltages associated with the first and second output capacitors, respectively, and generates an accumulated adjustment value that modifies the control signals provided by the DC output regulation portion to balance the first and second output capacitor voltages.Type: ApplicationFiled: April 5, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventor: Souren G. Fattal
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Publication number: 20120259483Abstract: A dual redundant actuation control system for controlling a plurality of actuators for positioning a plurality of moveable aircraft components. The actuation control system includes a component controller. The component controller includes two component control channels. Each of the plurality of actuators is electrically connected to each of the two component control channels such that either of the two component control channels may control any or all of the plurality of actuators.Type: ApplicationFiled: April 11, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: William E. Villano, Kevin Gibbons, Teddy L. Jones, Francis W. Recck
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Publication number: 20120255715Abstract: A liquid-to-air heat exchanger includes an air inlet header, an air outlet header and a core. The air inlet header has an air inlet connection and the air outlet header has an air outlet connection. The core is connected to the air inlet header and the air outlet header and is angled relative to the air inlet connection and the air outlet connection. More particularly, the air inlet connection and air outlet connection do not align in a straight flow path and the core is disposed at an acute angle relative to one of the air inlet connection and the air outlet connection and an obtuse angle relative to the other of the air inlet connection and the air outlet connection.Type: ApplicationFiled: April 7, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Steven D. Army, Donald E. Army
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Publication number: 20120255631Abstract: A valve is provided. The valve includes a flapper member. A barrel is coupled to the flapper member, the barrel having an interior volume and at least one movable vane within the interior volume. A shaft member is rotationally coupled to the barrel, the barrel having at least one stationary vane disposed within the interior volume.Type: ApplicationFiled: April 7, 2011Publication date: October 11, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Jay Stradinger, Kevin Arthur Roberg, Rosanna Catricala Glynn
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Patent number: 8276360Abstract: A dual-pump fuel system for use with a gas turbine engine comprises a fuel metering system, a mechanical fuel pump, an electric fuel pump and an engine controller. The fuel metering system is configured to dispense fuel flow to the engine based on operational needs of the gas turbine engine. The mechanical fuel pump is configured to deliver fuel to the metering system dependent on operational speeds of the engine. The electric fuel pump is configured to deliver fuel directly to the engine independent of operation of the engine. The engine controller is connected to the metering system and the electric fuel pump and is configured to cause the electric fuel pump to deliver fuel to the engine to start and operate the engine until the engine operates the mechanical fuel pump to deliver fuel to the metering system sufficient to sustain operation of the engine.Type: GrantFiled: May 22, 2009Date of Patent: October 2, 2012Assignee: Hamilton Sundstrand CorporationInventors: Richard A. Poisson, Ronald D. Poisson
