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公开(公告)号：US11486269B2
公开(公告)日：2022-11-01
申请号：US16286970
申请日：2019-02-27
摘要： A gas turbine engine includes a core housing that includes an inlet case and an intermediate case that respectively provide an inlet case flow path and an intermediate case flow path. A first shaft supports a low pressure compressor section that is arranged axially between the inlet case flow path and the intermediate case flow path. A first bearing supports the first shaft relative to the inlet case. A second bearing supports a second shaft relative to the intermediate case. A low pressure compressor hub is mounted to the first shaft. The low pressure compressor hub extends to the low pressure compressor section between the first bearing and the second bearing.
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公开(公告)号：US11421553B2
公开(公告)日：2022-08-23
申请号：US16353331
申请日：2019-03-14
发明人： Todd A. Davis , Gianna E. Sabino
摘要： A rotating structure provides a first annular array of first radial scoops and a second annular array of second radial scoops arranged axially with respect to the first annular array of first radial scoops. A first component is arranged in an axially forward direction relative to the first annular array of first radial scoops. A second component is arranged in an axially aft direction relative to the second annular array of second radial scoops. A lubrication system includes at least one nozzle aimed at the first and second annular arrays of first and second radial scoops. A first lubrication delivery path fluidly connects the first annular array of first radial scoops to the first component along the axially forward direction. A second lubrication delivery path fluidly connects the second annular array of second radial scoops to the second component along the axially aft direction.
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公开(公告)号：US11286854B2
公开(公告)日：2022-03-29
申请号：US16535454
申请日：2019-08-08
发明人： James B. Coffin , Joseph D. Walker , Todd A. Davis
摘要： A gas turbine engine includes a rotating shaft. An oil scoop rotates with the rotating shaft. The oil scoop has end walls spaced axially along an axis of rotation of the rotating shaft and an axially central recess. A duct is spaced radially outwardly of the oil scoop. The duct has an oil inlet, with an oil supply nozzle to supply oil into the oil inlet in the duct. The oil inlet is then connected to supply oil into the recess. The oil scoop has an inner hole to allow oil to flow from the recess to an outer periphery of the shaft.
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公开(公告)号：US20210123386A1
公开(公告)日：2021-04-29
申请号：US16662148
申请日：2019-10-24
发明人： Todd A. Davis , Reade W. James , Peter T. Schutte , Juan Jimenez
摘要： A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a passageway configured to permit fluid to drain back into a bearing compartment. The passageway has an inlet outside the bearing compartment and an outlet inside the bearing compartment. The outlet is spaced-apart from a central rotational axis of a towershaft gear.
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公开(公告)号：US10808753B1
公开(公告)日：2020-10-20
申请号：US16429151
申请日：2019-06-03
发明人： William G. Sheridan , Todd A. Davis
摘要： A method and an apparatus includes a static engine structure, at least one shaft that rotates relative to the static engine structure, and a bearing assembly that supports the shaft. The bearing assembly includes at least one first bearing hard mounted directly between the shaft and the static engine structure and at least one second bearing mounted between the shaft and the static engine structure. The at least one second bearing includes a damper. Also included is at least one third bearing that is mounted between the shaft and the static engine structure, wherein the at least one third bearing includes a resilient member.
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公开(公告)号：US20200292003A1
公开(公告)日：2020-09-17
申请号：US16353148
申请日：2019-03-14
摘要： A sleeve for a bearing damper comprising a cylinder shaped body having a forward end opposite an aft end, the body including an interior surface opposite an exterior surface, the body configured insertable between a bearing proximate the interior surface and a housing proximate the exterior surface; a ring portion proximate the forward end, the ring portion having an outer diameter larger than a diameter of the body; and an extension portion configured to provide an active damper surface extending beyond the housing.
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公开(公告)号：US10662811B2
公开(公告)日：2020-05-26
申请号：US15592790
申请日：2017-05-11
摘要： A fluid damping structure is provided that includes a damper ring. The damper ring includes an annular body a plurality of fluid check valves, and at least one fluid stop. The annular body extends circumferentially around an axial centerline, and is defined by a first end surface, a second end surface, an outer radial surface, and an inner radial surface. The outer radial surface and the inner radial surface extend axially from the first end surface toward the second end surface. The body includes one or more check valve passages. Each check valve passage extends axially from an open end disposed at the first end surface inwardly toward the second end surface, and is disposed between the inner radial surface and the outer radial surface. An inlet aperture extends between each check valve passage and the outer radial surface, and an outlet aperture extends between each check valve passage and the inner radial surface. Each fluid check valve is disposed in a check valve passage. The at least one fluid stop is configured to prevent fluid exit from the open end of each check valve passage.
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公开(公告)号：US20170306795A1
公开(公告)日：2017-10-26
申请号：US15137690
申请日：2016-04-25
发明人： Todd A. Davis
CPC分类号： F01D25/164 , F01D25/125 , F01D25/18 , F02C7/06 , F05D2220/323 , F05D2240/54 , F05D2260/20 , F05D2260/96 , F05D2260/98 , F16C27/045 , F16C33/6659 , F16C39/04 , F16C41/005 , F16C2360/23
摘要： An oil supply assembly for a bearing damper of a gas turbine engine includes an oil supply tube configured to supply oil in a first direction. The assembly also includes a bearing support having a bearing damper path connecting the bearing damper to the oil supply tube and a bearing compartment path connecting a bearing compartment to the oil supply tube. The assembly also includes a check valve disposed within the bearing damper path and configured to allow fluid communication in the first direction from the oil supply tube to the bearing damper and block fluid communication in a second direction opposite the first direction.
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公开(公告)号：US09638062B2
公开(公告)日：2017-05-02
申请号：US14460479
申请日：2014-08-15
发明人： Todd A. Davis
CPC分类号： F01D25/162 , F01D25/16 , F01D25/164 , F02C7/06 , F02K3/06 , F05D2230/60 , F05D2240/50 , F05D2260/4031 , F16C19/06 , F16C27/04 , Y10T29/49229
摘要： A gas turbine engine includes a bearing. A bearing support includes a first wall that extends between the first and second ends and is operatively supported by the bearing at a first end. An engine case is secured to the second end radially outward of the first end. A flexible support is provided by a second wall integral with and extending transversely from the first wall. The second wall has a first flange and a gear train component is secured to the first flange.
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公开(公告)号：US20140356141A1
公开(公告)日：2014-12-04
申请号：US14460479
申请日：2014-08-15
发明人： Todd A. Davis
IPC分类号： F01D25/16
CPC分类号： F01D25/162 , F01D25/16 , F01D25/164 , F02C7/06 , F02K3/06 , F05D2230/60 , F05D2240/50 , F05D2260/4031 , F16C19/06 , F16C27/04 , Y10T29/49229
摘要： A gas turbine engine includes a bearing. A bearing support includes a first wall that extends between the first and second ends and is operatively supported by the bearing at a first end. An engine case is secured to the second end radially outward of the first end. A flexible support is provided by a second wall integral with and extending transversely from the first wall. The second wall has a first flange and a gear train component is secured to the first flange.
摘要翻译： 燃气涡轮发动机包括轴承。 轴承支撑件包括在第一和第二端之间延伸并且在第一端由轴承可操作地支撑的第一壁。 发动机壳体固定到第一端的径向外侧的第二端。 柔性支撑件由与第一壁成一体并从第一壁横向延伸的第二壁提供。 第二壁具有第一凸缘，并且齿轮系组件固定到第一凸缘。
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