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公开(公告)号：US11629646B2
公开(公告)日：2023-04-18
申请号：US16145431
申请日：2018-09-28
摘要： A disclosed drive assembly for an auxiliary power unit includes a first drive shaft driven by an auxiliary power unit, a second drive shaft driven by a first electric motor, a differential gear system including a ring gear driven by the second drive shaft, a and planet gears supported within a carrier attached to the ring gear. The first drive shaft and an output shaft are coupled to the planet gears and a generator is driven by the output shaft. The electric motor and the auxiliary power unit combine to drive the output shaft.
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公开(公告)号：US11629645B2
公开(公告)日：2023-04-18
申请号：US16535755
申请日：2019-08-08
发明人： Conway Chuong , Shane R. Sylvester
摘要： A hydrostatic seal assembly includes a primary seal assembly configured to maintain a selected gap between the primary seal and a rotating component, and a seal carrier. The seal carrier includes a radial outer wall, an axial wall extending from the radial outer wall at a first axial end of the radial outer wall, and a carrier arm extending from the radial outer wall at a second axial end of the radial outer wall opposite the first axial end. The carrier arm is secured to a static structure for sealing between the rotating component and the static structure.
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公开(公告)号：US11625459B2
公开(公告)日：2023-04-11
申请号：US16270765
申请日：2019-02-08
摘要： An embedded processing system includes processing circuitry configured to execute a plurality of computer executable instructions. The embedded processing system also includes a memory system configured to store a plurality of configuration items, where at least one of the configuration items includes a sequence of the computer executable instructions. The embedded processing system also includes an authentication control configured to authenticate an immutable anchor associated with the embedded processing system, authenticate integrity of a reconfigurable entity map associated with the memory system, authenticate the configuration items based on the reconfigurable entity map, and perform an accommodation measure based on an authentication failure of at least one of the configuration items.
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公开(公告)号：US11608784B2
公开(公告)日：2023-03-21
申请号：US16274340
申请日：2019-02-13
发明人： Hung Duong , Marc J. Muldoon , Gabriel L. Suciu
摘要： A gas turbine engine has a low speed input shaft drives a first plurality of accessories. A high speed input shaft drives a second plurality of accessories. The first plurality of accessories rotating about a first set of rotational axes perpendicular to a first plane. The second plurality of accessories rotating about a second set rotational axes perpendicular to a second plane. The first and second planes extending in opposed directions away from a drive input axis. Compressed air is tapped and passes through a heat exchanger, then to a boost compressor, and then to at least one rotatable components in a main compressor section and a main turbine section. The boost compressor driven on a boost axis, which is non-parallel to the first set of rotational axes and the second set of rotational axes.
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公开(公告)号：US11578829B2
公开(公告)日：2023-02-14
申请号：US16738873
申请日：2020-01-09
摘要： A fitting for forming a double-walled tube includes an inner fitting having a first inner weld lip, a second inner weld lip, and an inner body extending from the first inner weld lip to the second inner weld lip and having an outer surface with a first threading. The fitting also includes an outer fitting having a first outer weld lip, a second outer weld lip, and an outer body extending from the first outer weld lip to the second outer weld lip and having an inner surface with a second threading that is configured to mate with the first threading.
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公开(公告)号：US11578668B2
公开(公告)日：2023-02-14
申请号：US15608293
申请日：2017-05-30
发明人： Jonathan Ortiz , Taryn Narrow , John H. Mosley , Zachary Mott , Paul R. Hanrahan
摘要： A gas turbine engine includes a compressor section, a combustor, and a turbine section. The turbine section includes a high pressure turbine comprising a plurality of turbine blades. The gas turbine engine includes a tap for tapping air that is compressed by the compressor, to be passed through a heat exchanger to cool the air, the cooled air to be passed to the plurality of turbine blades. A sensor is located downstream of a leading edge of the combustor, and is configured to measure a characteristic of the cooled air. A controller is configured to compare the measured characteristic to a threshold and control an operating condition of the gas turbine engine based on the comparison.
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7.发明授权公开(公告)号：US11574756B2
公开(公告)日：2023-02-07
申请号：US16734791
申请日：2020-01-06
发明人： Rajkumar Sengodan
摘要： Provided are embodiments for determining solenoid plunger position by performing a method which includes generating, by a first signal circuit, a first signal based at least in part on a pull-in current value of a current applied to a solenoid coil of a solenoid. The method further includes generating, by a second signal circuit, a second signal by applying a time delay to the first signal. The method further includes comparing, by a comparator circuit, the first signal and the second signal to determine whether a plunger of the solenoid has moved within the solenoid from a first position to a second position. The method further includes, responsive to determining that the plunger of the solenoid has moved within the solenoid from the first position to the second position, reducing the current applied to the solenoid coil of the solenoid from the pull-in current value to a hold current value.
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公开(公告)号：US11565821B2
公开(公告)日：2023-01-31
申请号：US16524752
申请日：2019-07-29
摘要： A power system of an aircraft includes a hybrid energy storage system with at least two energy storage subsystems each having a different power-energy density. The power system also includes one or more electric motors operably coupled to the hybrid energy storage system and to an aircraft engine. The power system further includes a means for controlling one or more electric power flows of the hybrid energy storage system to/from the one or more electric motors based on a modeled electric power demand associated with an engine load of one or more spools of the aircraft engine.
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公开(公告)号：US11555455B2
公开(公告)日：2023-01-17
申请号：US16783512
申请日：2020-02-06
发明人： Timothy J. Crowley , Sorin Bengea , Manuj Dhingra , David Gelwan , Kevin Hendricks , Joshua Adams , Martin Richard Amari , Richard P. Meisner , David Lei Ma
摘要： A hybrid electric propulsion system includes a gas turbine engine having at least one compressor section and at least one turbine section operably coupled to a shaft. The hybrid electric propulsion system includes an electric motor configured to augment rotational power of the shaft of the gas turbine engine. A controller is operable to determine an estimate of hybrid electric propulsion system parameters based on a composite system model and sensor data, determine a model predictive control state and a prediction based on the hybrid electric propulsion system parameters and the composite system model, determine a model predictive control optimization for a plurality of hybrid electric system control effectors based on the model predictive control state and the prediction using a plurality of reduced-order partitions of the composite system model, and actuate the hybrid electric system control effectors based on the model predictive control optimization.
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公开(公告)号：US11549588B2
公开(公告)日：2023-01-10
申请号：US15946254
申请日：2018-04-05
IPC分类号： F16J15/32 , F16J15/3288 , F01D11/00 , F01D11/08
摘要： A brush seal is provided that includes a top plate, a back plate, and a bristle pack. The bristle pack is secured at a joint between the top plate and the back plate. The bristle pack includes a first bristle set extending from the joint, a second bristle set extending from the joint, and a sliding backing plate. The sliding backing plate includes a sliding portion and a support portion. The sliding portion is disposed contiguous with the second bristle set. The support portion has an inner face and a support face. The inner face is in contact with a distal end of the second bristle set. The support face is configured to support at least a portion of the first bristle set. The sliding backing plate is configured to slide relative to the second bristle set.
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