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公开(公告)号：US11674413B2
公开(公告)日：2023-06-13
申请号：US16131095
申请日：2018-09-14
Applicant: United Technologies Corporation
Inventor： Frederick M. Schwarz , William G. Sheridan
IPC: F01D25/20 , F01D21/00 , F02K3/06 , F02C3/107 , F01D15/12 , F02C3/04 , F02C7/06 , F16D11/16 , F16D11/00
CPC classification number: F01D21/006 , F01D15/12 , F01D25/20 , F02C3/04 , F02C3/107 , F02C7/06 , F02K3/06 , F05D2220/36 , F05D2260/311 , F05D2260/902 , F05D2260/98 , F05D2270/116 , F05D2270/301 , F05D2270/3032 , F16D11/16 , F16D2011/006
Abstract: A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a fan and a braking system. The braking system is configured to selectively engage the fan during ground windmilling to apply a first level of braking to slow rotation of the fan. Further, when the rotation of the fan sufficiently slows, the braking system is further configured to apply a second level of braking more restrictive than the first level of braking.
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公开(公告)号：US11209086B2
公开(公告)日：2021-12-28
申请号：US16173465
申请日：2018-10-29
Applicant: United Technologies Corporation
Inventor： Todd A. Davis , William G. Sheridan
Abstract: A seal system has: a first member; a seal carried by the first member and having a seal face; and a second member rotatable relative to the first member about an axis. The second member has: a seat, the seat having a seat face in sliding sealing engagement with the seal face; and a circumferential array of passageway legs open to the seat face; and an oil pump for delivering oil via one or more first outlets to the passageway legs in at least a first mode of operation. The oil pump is coupled to one or more second outlets to deliver oil to a backside of the seat in at least a second mode of operation.
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公开(公告)号：US11168585B2
公开(公告)日：2021-11-09
申请号：US15864079
申请日：2018-01-08
Applicant: United Technologies Corporation
Inventor： William G. Sheridan , Kurt Link
Abstract: Aspects of the disclosure are directed to a gas turbine engine, having a fan that rotates about a central longitudinal axis. The gas turbine engine may comprise a nacelle having an outer wall that radially circumscribes the fan. The gas turbine engine may further comprise a fan drive gear system that drives the fan, and a rotating shaft that is coupled to and drives the fan drive gear system. The gas turbine engine may further comprise an air vent line in fluid communication with a bearing compartment to remove air from the bearing compartment and provide the removed air to a deoiler that removes oil droplets from the removed air and provides deoiler filtered air. A vent output line receives the deoiler filtered air and discharges the deoiler filtered air along a radially interior surface of the nacelle outer wall.
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公开(公告)号：US11162575B2
公开(公告)日：2021-11-02
申请号：US16689695
申请日：2019-11-20
Applicant: United Technologies Corporation
Inventor： William G. Sheridan
Abstract: A turbofan engine includes a fan section. A turbine section is in driving engagement with the fan section through a star gear system. The star gear system includes a plurality of star gears surrounding a sun gear. A carrier supports the plurality of star gears and includes a first carrier bearing flange. A ring gear surrounds the plurality of star gears and includes a ring gear bearing flange. At least one ring gear carrier bearing engages the carrier bearing flange and the ring gear bearing flange. A speed change mechanism for a gas turbine engine is also disclosed.
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公开(公告)号：US11085371B2
公开(公告)日：2021-08-10
申请号：US16550576
申请日：2019-08-26
Applicant: United Technologies Corporation
Inventor： Daniel Bernard Kupratis , Dmitriy B. Sidelkovskiy , Neil Terwilliger , William G. Sheridan
Abstract: A gas turbine engine according to an exemplary embodiment of this disclosure includes, among other possible things, a fan including a plurality of fan blades rotatable about an axis, a plurality of inlet guide vanes mounted forward of the plurality of fan blades, the plurality of inlet guide vanes selectively rotatable about the axis independent of the plurality of fan blades; and a motor for controlling rotation of the plurality of inlet guide vanes about the axis.
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Patent Agency Ranking
公开(公告)号：US11066954B2
公开(公告)日：2021-07-20
申请号：US16684926
申请日：2019-11-15
Applicant: United Technologies Corporation
Inventor： William G. Sheridan
Abstract: A gas turbine engine has a fan drive turbine for driving a gear reduction. The gear reduction drives a fan rotor. A lubrication system supplies oil to the gear reduction, and includes a lubricant pump to supply an air/oil mixture to an inlet of a deaerator. The deaerator includes a separator for separating oil and air, delivering separated air to an air outlet, and delivering separated oil back into an oil tank. The separated oil is first delivered into a pipe outwardly of the oil tank, and then into a location beneath a minimum oil level in the tank. Air within the oil tank moves outwardly through an air exit into the deaerator. A method of designing a gas turbine engine is also disclosed.
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公开(公告)号：US20210148287A1
公开(公告)日：2021-05-20
申请号：US16689690
申请日：2019-11-20
Applicant: United Technologies Corporation
Inventor： Jason Husband , William G. Sheridan
Abstract: A turbofan engine includes a fan section. A turbine section is in driving engagement with the fan section through a geared architecture. A flexible support supports the geared architecture relative to an engine static structure. A deflection limiter includes at least one of an axially extending branch or a radially extending branch. A flexible output shaft is in driving engagement with the fan section and driven by the geared architecture. A speed change mechanism for a gas turbine engine is also disclosed.
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公开(公告)号：US20210148286A1
公开(公告)日：2021-05-20
申请号：US16689656
申请日：2019-11-20
Applicant: United Technologies Corporation
Inventor： William G. Sheridan , Jason Husband
Abstract: A turbofan engine includes a fan section. A turbine section is in driving engagement with the fan section through a planetary gear system. The planetary gear system includes a plurality of planet gears surrounding a sun gear. A carrier supports the plurality of planet gears and includes a first carrier bearing flange. A ring gear surrounds the plurality of planet gears and includes a ring gear bearing flange. At least one ring gear carrier bearing engages the carrier bearing flange and the ring gear bearing flange. A speed change mechanism for a gas turbine is also disclosed.
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公开(公告)号：US10995673B2
公开(公告)日：2021-05-04
申请号：US15410113
申请日：2017-01-19
Applicant: United Technologies Corporation
Inventor： Gabriel L. Suciu , Hung Duong , Jonathan F. Zimmitti , William G. Sheridan , Michael E. McCune , Brian Merry
IPC: F02C7/32 , F02C3/06 , F02C7/18 , F02C7/36 , F02C7/268 , F01D15/10 , F01D25/12 , F16H1/22 , H02K7/116 , H02K7/18 , F01D15/12 , F02C7/275
Abstract: An exemplary gas turbine engine assembly includes a first spool having a first turbine operatively mounted to a first turbine shaft, and a second spool having a second turbine operatively mounted to a second turbine shaft. The first and second turbines are mounted for rotation about a common rotational axis within an engine static structure. The first and second turbine shafts are coaxial with one another. First and second towershafts are respectively coupled to the first and second turbine shafts. An accessory drive gearbox has a set of gears. A compressor is driven by the first towershaft. The engine assembly further includes a starter generator assembly, and a transmission coupling the starter generator assembly to the first set of gears. The transmission is transitionable between a first mode where the starter generator assembly is driven at a first speed relative to the second towershaft, and a second mode where the starter generator assembly is driven at a different, second speed relative to the second towershaft.
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公开(公告)号：US10883425B2
公开(公告)日：2021-01-05
申请号：US15850249
申请日：2017-12-21
Applicant: United Technologies Corporation
Inventor： William G. Sheridan
Abstract: A fan drive gear system includes at least one intermediate gear that includes an axial gear passage for receiving and conveying a fluid suitable for cooling and/or lubricating. At least a first axial end of the intermediate gear includes a first fluid storage trap for capturing fluid entering and/or exiting the gear passage and storing the fluid therein during powered operation of the fan drive gear system. The fluid is capable of being passively supplied to the intermediate gear passage during an interrupted power event.
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