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公开(公告)号：US20240328433A1
公开(公告)日：2024-10-03
申请号：US18193359
申请日：2023-03-30
发明人： Travis Marshall
CPC分类号： F04D29/445 , F04D7/02 , F04D29/4293 , B33Y80/00
摘要： A pump assembly includes an impeller, a diffuser ring, and an additively manufactured coupler. The diffuser ring is fluidly coupled to the impeller. The additively manufactured coupler is fluidly coupled to the diffuser ring. The additively manufactured coupler has a teardrop shaped cross-section. The pump assembly also includes a volute fluidly coupled to the coupler. The volute is configured to receive fluid from the diffuser ring through the additively manufactured coupler. The teardrop geometry of the additively manufactured coupler is designed to reduce pressure loss in fluid flowing to the volute.
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公开(公告)号：US20240328412A1
公开(公告)日：2024-10-03
申请号：US18193347
申请日：2023-03-30
发明人： Travis Marshall
IPC分类号： F04B53/10
CPC分类号： F04B53/10 , B33Y10/00 , B33Y80/00 , F05D2230/31
摘要： An additively manufactured asymmetric self-supporting valve core can include a plurality of valve interfaces and a plurality of valve grooves. The valve core can be manufactured such that a major axis of the valve core is oriented within 5 degrees of being perpendicular to a build plate during additive manufacturing. The valve grooves can each include an upper portion and a lower portion, where the upper portion is a chamfer and the lower portion is an annular ring. Based on such a design and orientation during manufacturing, the valve core does not require internal support structures, the valve core maintains flow characteristics, and the valve core can have a smooth surface finish without overhanging radii.
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公开(公告)号：US12107409B2
公开(公告)日：2024-10-01
申请号：US17749319
申请日：2022-05-20
CPC分类号： H02H3/087 , B64D41/007 , H02J1/00 , H02M7/02 , B64D2221/00 , H02J2310/44
摘要： Examples described herein provide an electric power distribution system (EPDS) that includes a transformer rectifier unit (TRU) that receives alternating current (AC) electric power from an AC electric power source during a first state of operation. The EPDS further includes a direct current (DC) electric power source that receives the DC electric power from the TRU during the first state of operation. The EPDS further includes a DC essential bus that receives the DC electric power from the DC electric power source during the first state of operation and that receives the DC electric power from another source during a second state of operation. The EPDS further includes a controller to selectively engage a diode bypass contactor to enable a diode during the second state of operation, and selectively engage the diode bypass contactor to enable a diode bypass during the first state of operation.
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公开(公告)号：US20240322723A1
公开(公告)日：2024-09-26
申请号：US18356334
申请日：2023-07-21
CPC分类号： H02P21/22 , H02P21/001 , H02P21/18
摘要： A hoist application system is provided. The hoist application system includes a motor drive unit, which is receptive of a final duty command and which drives a motor in accordance with the final duty command, a closed-loop control unit configured to generate a closed-loop duty command, an open-loop control unit configured to generate an open-loop duty command and a switch logic unit. The switch logic unit is receptive of direct current (DC) system information, the closed-loop duty command and the open-loop duty command, and is configured to generate the final duty command from one of the closed-loop duty command and the open-loop duty command based on the DC system information.
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15.发明公开公开(公告)号：US20240322554A1
公开(公告)日：2024-09-26
申请号：US18123633
申请日：2023-03-20
摘要： A power supply system is configured to provide power to a load connected between first and second connectors. The system includes a generator that produces an alternating current generator output. A rectifier receives the alternating current generator output and converts it into a direct current output and provides the direct current (DC) output between the first and second connectors. A filter is connected to the rectifier and between the connectors to smooth the DC output. The filter includes a midpoint configured to be connected to ground. A positive fault locating resistor is switchably connected to one of the first and second connectors by a switch configured to be normally open, and to switch closed upon detection of a ground fault so the positive ground fault locating resistor can provide a sustained level current for locating and clearing the ground fault.
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公开(公告)号：US20240318931A1
公开(公告)日：2024-09-26
申请号：US18126092
申请日：2023-03-24
发明人： Viktor Kilchyk , Brent J. Merritt
CPC分类号： F28F21/08 , B33Y10/00 , B33Y80/00 , F28F2265/26
摘要： A heat exchanger includes a first header, a second header, and a core. The first header includes a fluid inlet. The second header is positioned downstream of the first header with respect to a first flow path of a first fluid. The second header includes a fluid outlet. The core extends from the first header to the second header. The core includes a plurality of tubes. The heat exchanger also includes a first region which is at a higher temperature than regions adjacent to the first region. The first region is made of a first mixture of materials in a first ratio. The first mixture of materials causes a coefficient of thermal expansion in the first region to be lower than coefficients of thermal expansion in the regions adjacent to the first region.
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公开(公告)号：US20240318617A1
公开(公告)日：2024-09-26
申请号：US18189696
申请日：2023-03-24
发明人： Mark R. Gurvich , Alan F. Hunter , Rebecca R. Stoner , Jay W. Kokas , Haralambos Cordatos , Andrew M. Caldecutt , Murtuza Lokhandwalla
CPC分类号： F02M37/34 , B01D63/02 , B01D71/5222 , B01D2325/028
摘要： A gas removal system includes an interior baffle with an outside surface having flow channels and a central fluid receiving chamber. A membrane fiber bundle with an inside surface is placed outwardly of the interior baffle. The member fiber bundle is formed of fibers that allow the passage of gas through an outer wall, but resist the passage of fluid with the inside surface of the fiber bundle partially contacting the outside surface of the baffle. The interior baffle and the fiber bundle extend between axial ends. A changed diameter portion is intermediate the axial ends wherein each of the outside surface of the interior baffle and the inside surface of the membrane fiber bundle change in diameter in a first direction and then return in a second direction changing diameter in an opposite radial direction from the first direction, and such that the changed diameter portion is intermediate the axial ends. A fuel system is also disclosed.
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公开(公告)号：US20240318603A1
公开(公告)日：2024-09-26
申请号：US18189384
申请日：2023-03-24
CPC分类号： F02C7/277 , F01D9/041 , F01D17/16 , F05D2240/128 , F05D2260/85
摘要： A combined air turbine starter and flow control valve includes a turbine having turbine blades and a shaft rotating with the turbine blades. The turbine is received within a nozzle housing. The nozzle housing includes an inlet. A radially outwardly extending inner surface extends from the inlet and toward the turbine blades. A flow control piston is received to be movable along a rotational axis of the turbine shaft, and toward and away the radially outwardly extending surface of the nozzle housing. A control is programmed to direct a movement system to position the flow control piston relative to the radially outwardly extending surface to achieve a desired volume of airflow to the turbine blades. A gas turbine engine starting system is also disclosed.
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公开(公告)号：US20240313647A1
公开(公告)日：2024-09-19
申请号：US18208974
申请日：2023-06-13
发明人： Rajkumar Sengodan , Palash Mairal
CPC分类号： H02M3/156 , H02M1/4216 , H02M1/44
摘要： A system includes a transformer having a multi-phase AC input and AC phase segment outputs. A plurality of rectifiers are each connected to receive AC input from a respective one of the AC phase segment outputs. Each rectifier has a respective positive DC output and a respective negative DC output. A first interphase transformer (IPT) with a respective winding is connected to each of the positive DC outputs of the plurality of rectifiers. The windings of the first IPT are connected to an output node of a positive DC power rail. A second IPT with a respective winding is connected to each of the negative DC outputs of the plurality of rectifiers. The windings of the second IPT are connected to an output node of a negative DC power rail. A power switch is operatively connected from the positive DC power rail to the negative DC power rail.
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公开(公告)号：US20240313529A1
公开(公告)日：2024-09-19
申请号：US18603654
申请日：2024-03-13
CPC分类号： H02J1/08 , B64D47/00 , B64D2221/00
摘要： An active rectifier circuit for providing a rectified voltage output to a point of regulation that is located downstream of the active rectifier circuit. The active rectifier circuit includes rectifying circuitry and control circuitry operable to control the rectifying circuitry based on voltage feedback to provide a certain voltage output at the point of regulation. The control circuitry is configured to obtain voltage feedback from a first point associated with the point of regulation and to obtain parallel voltage feedback from a second, different point, and to control the rectifying circuitry based on both the voltage feedback from the first point and the voltage feedback from the second point.
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