Counter rotating turbine with reversing speed reduction assembly

    公开(公告)号:US10815881B2

    公开(公告)日:2020-10-27

    申请号:US15709651

    申请日:2017-09-20

    Abstract: The present disclosure is directed to a gas turbine engine including a turbine section including a first rotating component interdigitated along a longitudinal direction with a second rotating component. The first rotating component and the second rotating component are each coupled to a speed reduction assembly in counter-rotating arrangement. The first rotating component comprising an outer shroud and a plurality of outer shroud airfoils extended inward along a radial direction from the outer shroud. A connecting member couples the outer shroud to a radially extended first rotor. The second rotating component comprising an inner shroud and a plurality of inner shroud airfoils extended outward along the radial direction from the inner shroud, the plurality of inner shroud airfoils in alternating arrangement along the longitudinal direction with the plurality of outer shroud airfoils. The gas turbine engine defines a radius per unit thrust defined by a maximum radius at the turbine section over a maximum thrust output between approximately 0.0004 to approximately 0.0010 inches per pound thrust.

    Air bearing and thermal management nozzle arrangement for interdigitated turbine engine

    公开(公告)号:US10669893B2

    公开(公告)日:2020-06-02

    申请号:US15605351

    申请日:2017-05-25

    Abstract: The present disclosure is directed to a gas turbine engine defining a longitudinal direction, an axial centerline extended along the longitudinal direction, an upstream end and a downstream end opposite of the upstream end along the longitudinal direction, a radial direction, and a circumferential direction. The gas turbine engine includes a high speed turbine rotor coupled to a high pressure (HP) shaft and HP compressor, a low speed turbine rotor comprising an axially extended hub, and a first turbine bearing disposed radially between the low speed turbine rotor and the high speed turbine rotor. The high speed turbine rotor defines a turbine cooling conduit through the high speed turbine rotor. The low speed turbine rotor includes a rotating nozzle adjacent to the turbine cooling conduit. The first turbine bearing defines an outer air bearing and an inner air bearing. The first turbine bearing defines a stationary nozzle adjacent to the rotating nozzle of the first turbine rotor.

    INTERDIGITATED TURBINE ENGINE AIR BEARING COOLING STRUCTURE AND METHOD OF THERMAL MANAGEMENT

    公开(公告)号:US20180340446A1

    公开(公告)日:2018-11-29

    申请号:US15605225

    申请日:2017-05-25

    Abstract: The present disclosure is directed to a gas turbine engine defining a longitudinal direction, a radial direction extended from an axial centerline, and a circumferential direction. The gas turbine engine includes a compressor section, a combustion section, and a turbine section in serial flow arrangement along the longitudinal direction. The gas turbine engine includes a low speed turbine rotor including a hub extended along the longitudinal direction and radially within the combustion section; a high speed turbine rotor including a high pressure (HP) shaft coupling the high speed turbine rotor to a HP compressor in the compressor section; and a first turbine bearing disposed radially between the hub of the low speed turbine rotor and the HP shaft. The HP shaft extends along the longitudinal direction and radially within the hub of the low speed turbine rotor. The high speed turbine rotor defines a turbine cooling conduit extended within the high speed turbine rotor. The first turbine bearing defines an outer air bearing along an outer diameter of the first turbine bearing and adjacent to the hub of the low speed turbine rotor. The first turbine bearing defines an inner air bearing along an inner diameter of the first turbine bearing and adjacent to the HP shaft. The first turbine bearing further defines a cooling orifice adjacent along the longitudinal direction to the turbine cooling conduit of the high speed turbine rotor. The cooling orifice and the turbine cooling conduit are in fluid communication.

    THREE SPOOL GAS TURBINE ENGINE WITH INTERDIGITATED TURBINE SECTION

    公开(公告)号:US20180209336A1

    公开(公告)日:2018-07-26

    申请号:US15412175

    申请日:2017-01-23

    Abstract: The present disclosure is directed to a gas turbine engine defining a radial direction, a circumferential direction, an axial centerline along a longitudinal direction, and wherein the gas turbine engine defines an upstream end and a downstream end long the longitudinal direction. The gas turbine engine includes a turbine section including a low speed turbine rotor, a high speed turbine rotor, and an intermediate speed turbine rotor. The low speed turbine rotor includes an inner shroud and an outer shroud outward of the inner shroud in the radial direction. The outer shroud defines a plurality of outer shroud airfoils extended inward of the outer shroud along the radial direction. The low speed turbine rotor further includes at least one connecting airfoil coupling the inner shroud to the outer shroud. The high speed turbine rotor is disposed upstream of the one or more connecting airfoils of the low speed turbine rotor along the longitudinal direction. The high speed turbine rotor includes a plurality of high speed turbine airfoils extended outward in the radial direction. The intermediate speed turbine rotor is disposed upstream of the one or more connecting airfoils of the low speed turbine rotor along the longitudinal direction. The intermediate speed turbine rotor includes a plurality of intermediate speed turbine airfoils extended outward in the radial direction. The intermediate speed turbine rotor is disposed among the plurality of outer shroud airfoils of the low speed turbine rotor along the longitudinal direction.

    TURBINE ENGINE ASSEMBLY AND METHODS OF ASSEMBLING SAME
    17.
    发明申请
    TURBINE ENGINE ASSEMBLY AND METHODS OF ASSEMBLING SAME 有权
    涡轮发动机总成及组装方法

    公开(公告)号:US20140119885A1

    公开(公告)日:2014-05-01

    申请号:US14149511

    申请日:2014-01-07

    Abstract: A turbine engine assembly is provided. The turbine engine assembly includes a core gas turbine engine including a first rotatable drive shaft, a first low-pressure turbine section in serial flow communication with the gas turbine engine, a gear assembly coupled to the first low-pressure turbine section through a second rotatable drive shaft, and a second low-pressure turbine section in serial flow communication with the core gas turbine engine. The first low-pressure turbine section is configured to rotate in a first rotational direction, and the second low-pressure turbine section is configured to rotate in a second rotational direction opposite the first rotational direction. The first and second low-pressure turbine sections are spaced axially apart from each other. The turbine engine assembly also includes a fan assembly coupled to the first low-pressure turbine section through the gear assembly, and coupled to the second low-pressure turbine section through a third rotatable drive shaft.

    Abstract translation: 提供涡轮发动机组件。 涡轮发动机组件包括核心燃气涡轮发动机,其包括第一可旋转驱动轴,与燃气涡轮发动机串联流动连接的第一低压涡轮机部分,通过第二可旋转的 驱动轴和与核心燃气涡轮发动机串联流动连通的第二低压涡轮部分。 第一低压涡轮部分构造成沿第一旋转方向旋转,并且第二低压涡轮部分构造成沿与第一旋转方向相反的第二旋转方向旋转。 第一和第二低压涡轮机部分彼此轴向间隔开。 涡轮发动机组件还包括通过齿轮组件联接到第一低压涡轮机部分并通过第三可旋转驱动轴联接到第二低压涡轮机部分的风扇组件。

    Gearbox coupling in a turbomachine
    19.
    发明授权

    公开(公告)号:US11085515B2

    公开(公告)日:2021-08-10

    申请号:US16280568

    申请日:2019-02-20

    Abstract: An engine includes a static frame member; a spool configured to rotate relative to the static frame member during operation of the engine; a gearbox coupled to the spool; and a gearbox coupling assembly mounting the gearbox to the static frame member using a plurality of moveable connection members, each moveable connection member including a sliding connection allowing for movement of the gearbox relative to the static frame member in a plane perpendicular to an axial direction of the engine.

    Counter rotating turbine with reversing reduction gearbox

    公开(公告)号:US10823114B2

    公开(公告)日:2020-11-03

    申请号:US16535930

    申请日:2019-08-08

    Abstract: The present disclosure is directed to a gas turbine engine defining a longitudinal direction, a radial direction, and a circumferential direction, and an upstream end and a downstream end along the longitudinal direction. The gas turbine engine includes a turbine section, a gearbox proximate to the turbine section, and a driveshaft. The turbine section includes a first rotating component interdigitated with a second rotating component along the longitudinal direction. The first rotating component includes an outer shroud defining a plurality of outer shroud airfoils extended inward of the outer shroud along the radial direction and one or more connecting airfoils coupling the outer shroud to a radially extended rotor. The second rotating component includes an inner shroud defining a plurality of inner shroud airfoils extended outward of the inner shroud along the radial direction. The second rotating component is coupled to an input shaft connected to an input gear of the gearbox. The driveshaft is extended in the longitudinal direction and is connected to an output gear of the gearbox. The first rotating component is coupled to the driveshaft.

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