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公开(公告)号：US12281616B1
公开(公告)日：2025-04-22
申请号：US18390229
申请日：2023-12-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Sachin Ramprashad , Ryan Shook
Abstract: A system includes an actuation pump sub-system (APS) with an inlet configured to feed fuel from a fuel source into the APS, a first outlet configured for connecting the APS in fluid communication with an actuation system to supply fuel flow for actuation, a second outlet feeding into a supply line, and a third outlet feeding into the supply line. A fuel oil cooler (FOC) is included in a first branch of the supply line. The FOC is in fluid communication to receive flow from the second outlet. The APS includes a bypass valve (BPV) in a second branch of the supply line, in parallel with the FOC and in fluid communication to allow flow from the third outlet into the supply line bypassing the FOC. A main pump and control sub-system has a main inlet connected in fluid communication with the supply line downstream of the BPV and FOC.
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公开(公告)号：US20250109755A1
公开(公告)日：2025-04-03
申请号：US18376103
申请日：2023-10-03
Applicant: Hamilton Sundstrand Corporation (HSC)
Inventor： August M. Coretto , Ryan Prescott Susca , Francis P. Marocchini , Sachin Ramprashad , Leo J. Veilleux, JR.
Abstract: A system can include a first controllable valve configured to output a control pressure on one or more first pressure control lines, a second controllable valve configured to output a control pressure on one or more second pressure control lines, a transfer valve in fluid communication with the first controllable valve and the second controllable valve, and a hydraulic centering system operatively associated with and/or forming part of the transfer valve. The transfer valve can be configured to move between a first position, a second position, and a third position. The hydraulic centering system can be configured to maintain the transfer valve in the first position.
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公开(公告)号：US20250084794A1
公开(公告)日：2025-03-13
申请号：US18244362
申请日：2023-09-11
Applicant: Hamilton Sundstrand Corporation
Inventor： Sachin Ramprashad , Ryan Prescott Susca
Abstract: A system includes an augmentor fuel pump (AFP) configured to be connected to be driven by a gearbox of an auxiliary power unit (APU). An augmentor fuel control (AFC) is connected in fluid communication with the AFP and configured to control supply of fuel to one or more engine augmentors. A controller can be operatively connected to control the APU for a startup mode, a run mode, and a powered down mode.
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公开(公告)号：US12241414B1
公开(公告)日：2025-03-04
申请号：US18390197
申请日：2023-12-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Sachin Ramprashad , Ryan Shook
Abstract: A system includes an actuation pump sub-system (APS). A fuel oil cooler (FOC) is included in a first branch of a supply line. The FOC is in fluid communication to receive flow from a second outlet of the APS. The APS includes a bypass valve (BPV) in a second branch of the supply line, in parallel with the FOC and in fluid communication to allow flow from the third outlet into the supply line bypassing the FOC. A combined main and augmentor pump sub-system (CMAPS) has a main inlet connected in fluid communication with the supply line downstream of the BPV and FOC, a gas generator (GG) outlet for supplying fuel to a downstream gas generator, and an augmentor outlet for supplying fuel to a downstream augmentor.
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公开(公告)号：US20230058118A1
公开(公告)日：2023-02-23
申请号：US17408212
申请日：2021-08-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Aaron F. Rickis , Lukasz Burek , Sachin Ramprashad , Steve Doerner , Wayne S. Johnson, JR.
IPC: F16K11/07 , F16K31/122 , F02C9/26
Abstract: A metering valve has a shutoff position at which it blocks flow from the metering valve outlet line from reaching an outlet to a use. A spool has a first end and a second end. The housing has a first shoulder associated with the first end and a second shoulder associated with the second end. In the shutoff position, the spool has the first end spaced from the first shoulder, and the second end spaced from the second shoulder. A fuel system for a gas turbine engine is also disclosed.
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Patent Agency Ranking
公开(公告)号：US12146461B2
公开(公告)日：2024-11-19
申请号：US17827344
申请日：2022-05-27
Applicant: Hamilton Sundstrand Corporation
Inventor： Sachin Ramprashad , Todd Haugsjaahabink
Abstract: A dual valve fuel metering system comprising a flow path defined between a fuel inlet and a fuel outlet. The flow path includes a primary flow path and a secondary flow path, wherein the fuel outlet is configured and adapted to be in fluid communication with at least one engine fuel manifold. A primary flow metering valve configured and adapted to meter flow on the primary flow path. A secondary flow metering valve configured and adapted to meter flow on the secondary flow path.
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公开(公告)号：US11703134B2
公开(公告)日：2023-07-18
申请号：US17408212
申请日：2021-08-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Aaron F. Rickis , Lukasz Burek , Sachin Ramprashad , Steve Doerner , Wayne S. Johnson, Jr.
IPC: F16K11/07 , F02C7/232 , F02C9/26 , F16K31/122
CPC classification number: F16K11/0708 , F02C7/232 , F02C9/263 , F16K31/1221 , F05D2220/32
Abstract: A metering valve has a shutoff position at which it blocks flow from the metering valve outlet line from reaching an outlet to a use. A spool has a first end and a second end. The housing has a first shoulder associated with the first end and a second shoulder associated with the second end. In the shutoff position, the spool has the first end spaced from the first shoulder, and the second end spaced from the second shoulder. A fuel system for a gas turbine engine is also disclosed.
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公开(公告)号：US20210301724A1
公开(公告)日：2021-09-30
申请号：US17217659
申请日：2021-03-30
Applicant: Hamilton Sundstrand Corporation
Inventor： Charles E. Reuter , Aaron F. Rickis , Francis P. Marocchini , Matej Rutar , August M. Coretto , Sachin Ramprashad
Abstract: A system includes a flow inlet conduit and a primary conduit that branches from the flow inlet conduit for delivering flow to a set of primary nozzles. An equalization bypass valve (EBV) connects between the flow inlet conduit and a secondary conduit for delivering flow to a set of secondary nozzles. The EBV is connected to an equalization conduit (EC). A pressure equalization solenoid is connected to the EC to selectively connect a servo supply pressure conduit and/or a return pressure (PDF) conduit into fluid communication with the EC. An EBV rate limiting orifice (RLO) is connected in the PDF conduit. A bypass conduit branches from the PDF conduit on a first side of the EBV RLO and reconnects to the PDF conduit on a second side of the EBV RLO. An orifice bypass valve (OBV) is connected to the bypass conduit and acts to selectively bypass the EBV RLO.
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公开(公告)号：US20250129807A1
公开(公告)日：2025-04-24
申请号：US18381737
申请日：2023-10-19
Applicant: Hamilton Sundstrand Corporation
Inventor： Sachin Ramprashad , August M. Coretto , Frank Perrelli
Abstract: A system includes a first electrohydraulic servo valve (EHSV) configured to be in fluid communication with a pressure supply and with a pressure return. The first EHSV includes a first actuator extend line and a first actuator retract line. A second EHSV is configured to be in fluid communication with the pressure supply and with the pressure return. The second EHSV includes a second actuator extend line and a second actuator retract line. An actuator includes an extend chamber in fluid communication with both of the first and second extend actuator lines, and a retract chamber in fluid communication with both of the first and second retract actuator lines for extending an end effector when the first and second EHSVs pressurize the extend chamber, and for retracting the end effector when the first and second EHSVs pressurize the retract chamber.
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公开(公告)号：US12228080B1
公开(公告)日：2025-02-18
申请号：US18378990
申请日：2023-10-11
Applicant: Hamilton Sundstrand Corporation
Inventor： Sachin Ramprashad , Eric Briggs
Abstract: A system includes a burn flow line and a flow divider valve in fluid communication with the burn flow line to split flow from the burn flow line to a primary line and to a secondary line for supplying fuel to a set of primary engine nozzles and to a set of secondary engine nozzles, respectively. A sensor operatively connected to the flow divider valve to produce a feedback signal indicative of flow split between the primary line and the secondary line. A controller is operatively connected to receive the feedback signal from the senor, compare the feedback signal to a stored flow split value for a mismatch, and output an alert message upon detecting the mismatch.
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