公开(公告)号：US20190017410A1

公开(公告)日：2019-01-17

申请号：US16131095

申请日：2018-09-14

Applicant: United Technologies Corporation

Inventor： Frederick M. Schwarz ,  William G. Sheridan

IPC: F01D21/00 ,  F01D25/20 ,  F02C3/04 ,  F02C3/107 ,  F02C7/06 ,  F02K3/06 ,  F01D15/12 ,  F16D11/00 ,  F16D11/16

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.

公开(公告)号：US20180371998A1

公开(公告)日：2018-12-27

申请号：US15634303

申请日：2017-06-27

Applicant: United Technologies Corporation

Inventor： William G. Sheridan

IPC: F02C7/06 ,  F02C3/04 ,  F02C9/18 ,  F02K3/06 ,  F01D15/12 ,  F16K15/00 ,  F16K47/00 ,  F16C32/06

Abstract: A gas turbine engine includes a fan, a compressor, a combustor, a turbine, a bypass duct, and a bearing compartment assembly. The bearing compartment assembly includes a fluid pump, a compartment, a fluid line between the fluid pump and the compartment, and a damper check valve located in the fluid line. The damper check valve is a unitary, monolithic component that is configured to restrict a reverse flow from the compartment to the fluid pump substantially more than the damper check valve restricts a standard flow from the fluid pump to the compartment.

公开(公告)号：US10107135B2

公开(公告)日：2018-10-23

申请号：US14922507

申请日：2015-10-26

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Frederick M. Schwarz ,  William G. Sheridan

IPC: F01D15/12 ,  F01D21/00 ,  F02C3/04 ,  F02C7/06 ,  F16D11/00 ,  F16D11/16

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.

公开(公告)号：US10087886B2

公开(公告)日：2018-10-02

申请号：US14284893

申请日：2014-05-22

Applicant: United Technologies Corporation

Inventor： Allan R. Penda ,  Gabriel L. Suciu ,  William G. Sheridan ,  Wesley K. Lord

IPC: F02K1/70 ,  F02C7/36 ,  F02K1/32 ,  F02K3/075 ,  F02C3/10 ,  F02C3/113 ,  F02C3/14 ,  F02C6/04 ,  F16H3/60

Abstract: A gas turbine engine comprises a core engine, a fan, a bypass duct and a clutch. The fan is driven by the core engine. The bypass duct is configured to receive airflow from the fan. The clutch links the core engine and the fan. The core comprises a reverse-flow, two-spool gas generator in one embodiment. In another embodiment, the fan is driven by a free turbine aerodynamically powered by the core engine. In one embodiment, the clutch includes reverse gearing to reverse rotational output of the fan. In one embodiment, the clutch and reverse gearing are implemented in an epicyclic gear system.

公开(公告)号：US20180195440A1

公开(公告)日：2018-07-12

申请号：US15850249

申请日：2017-12-21

Applicant: United Technologies Corporation

Inventor： William G. Sheridan

IPC: F02C7/36 ,  F16H57/08 ,  F01D25/18 ,  F16H57/04 ,  F16H1/36 ,  F02C3/04 ,  F02C7/06 ,  F02C7/16

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.

公开(公告)号：US09879608B2

公开(公告)日：2018-01-30

申请号：US14635524

申请日：2015-03-02

Applicant: United Technologies Corporation

Inventor： William G. Sheridan

IPC: F02C7/36 ,  F02C7/06 ,  F01D25/18 ,  F16H57/04 ,  F16H57/08 ,  F02C3/04 ,  F02C7/16 ,  F16H1/36

CPC classification number: F02C7/36 ,  F01D25/18 ,  F02C3/04 ,  F02C7/06 ,  F02C7/16 ,  F05D2220/32 ,  F05D2240/35 ,  F05D2260/20 ,  F05D2260/40311 ,  F05D2260/53 ,  F05D2260/98 ,  F16H1/36 ,  F16H57/0427 ,  F16H57/043 ,  F16H57/0442 ,  F16H57/0456 ,  F16H57/0479 ,  F16H57/0486 ,  F16H57/082

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.

公开(公告)号：US09874274B2

公开(公告)日：2018-01-23

申请号：US14485039

申请日：2014-09-12

Applicant: United Technologies Corporation

Inventor： William G. Sheridan ,  Michael E. McCune

IPC: F02C7/36 ,  F16H57/04 ,  F01D25/18 ,  F02C3/04 ,  F16H57/08

CPC classification number: F16H57/0427 ,  F01D25/18 ,  F02C3/04 ,  F02C7/36 ,  F05D2230/60 ,  F05D2260/40311 ,  F05D2260/98 ,  F16H57/0421 ,  F16H57/0423 ,  F16H57/046 ,  F16H57/0479 ,  F16H57/0482 ,  F16H57/0486 ,  F16H57/082 ,  Y10T29/49316 ,  Y10T29/4932 ,  Y10T29/49323 ,  Y10T29/49464

Abstract: A geared architecture includes a carrier that has spaced apart walls with circumferentially spaced mounts that interconnect the walls. The mounts provide circumferentially spaced apart apertures between the mounts at an outer circumference of the carrier. A sun gear and intermediate gears are arranged about and intermesh with the sun gear. The intermediate gears are supported by the carrier. The intermediate gears extend through the apertures to intermesh with a ring gear. A baffle is supported relative to the carrier and includes a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubricant on the at least one of the sun gear and intermediate gears. The lubrication passage includes a primary passage that extends laterally between the walls and first and second passages and is in communication with the primary passage and respectively terminates near the sun gear and intermediate gears.

公开(公告)号：US09874150B2

公开(公告)日：2018-01-23

申请号：US14222919

申请日：2014-03-24

Applicant: United Technologies Corporation

Inventor： Michael E. McCune ,  William G. Sheridan

IPC: F16H1/28 ,  F02C7/36 ,  F16H57/08 ,  F02K3/06 ,  F02C3/107 ,  F02C7/32 ,  F16H57/023 ,  F16H57/04

CPC classification number: F02C7/36 ,  F02C3/107 ,  F02C7/32 ,  F02K3/06 ,  F05D2230/60 ,  F05D2260/40311 ,  F16H1/28 ,  F16H57/023 ,  F16H57/0423 ,  F16H57/0456 ,  F16H57/0479 ,  F16H57/0486 ,  F16H57/082 ,  Y02T50/671 ,  Y10T29/49464

Abstract: A method of assembling an epicyclic gear train comprises the steps of providing a unitary carrier having a central axis that includes spaced apart walls and circumferentially spaced connecting structure defining spaced apart apertures provided at an outer circumference of the carrier. Gear pockets are provided between the walls and extend to the apertures. A central opening is in at least one of the walls. A plurality of intermediate gears are inserted through the central opening and move the intermediate gears radially outwardly into the gear pockets to extend into the apertures. A sun gear is inserted through the central opening. The plurality of intermediate gears is moved radially inwardly to engage the sun gear.

公开(公告)号：US20170234167A1

公开(公告)日：2017-08-17

申请号：US15161450

申请日：2016-05-23

Applicant: United Technologies Corporation

Inventor： David Allen Stachowiak ,  William G. Sheridan

IPC: F01D25/36 ,  B64D35/00 ,  B64D27/16

Abstract: A bowed rotor prevention system for a gas turbine engine of an aircraft is provided. The bowed rotor prevention system includes a gear train and a bowed rotor prevention motor. The gear train is coupled through an engine accessory to an engine accessory gearbox that is further coupled to a starting spool of the engine. The bowed rotor prevention motor is operable to drive rotation of the starting spool of the gas turbine engine through the gear train upon engine shutdown.

公开(公告)号：US20170138217A1

公开(公告)日：2017-05-18

申请号：US14943418

申请日：2015-11-17

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Frederick M. Schwarz ,  William G. Sheridan

IPC: F01D21/10 ,  F02C7/06 ,  F02C3/10 ,  F01D25/18

CPC classification number: F01D21/10 ,  F01D25/18 ,  F02C3/10 ,  F02C7/06 ,  F02C7/36 ,  F05D2220/32 ,  F05D2260/40311 ,  F05D2260/606 ,  F05D2260/607 ,  F05D2260/80 ,  F05D2260/83 ,  F05D2260/98 ,  G01N15/0656 ,  G01N15/1031 ,  G01N33/2858 ,  G01N2015/0053 ,  G01N2015/1062 ,  Y02T50/675

Abstract: According to one aspect of the present disclosure, a debris monitoring system is disclosed that includes a fan, a geared architecture operatively coupled to the fan. The geared architecture includes a component having a non-ferrous metal coating. A scavenge pump is in fluid communication with the geared architecture via a lubrication sump. A non-ferrous chip detector is situated downstream of the geared architecture, but upstream of the scavenge pump. A controller is configured to determine a lubrication condition of the component based on a signal received from the non-ferrous chip detector, and command a status indicator in response thereto.