公开(公告)号：US12065973B2

公开(公告)日：2024-08-20

申请号：US17492114

申请日：2021-10-01

Applicant: RTX Corporation

Inventor： Daniel Bernard Kupratis ,  Coy Bruce Wood

IPC: F02C7/36 ,  F01D15/10 ,  F01D15/12 ,  F01D25/36 ,  F02C7/275 ,  F02K3/06 ,  F16H3/72 ,  H02K7/18 ,  H02K16/02

CPC classification number: F02C7/36 ,  F01D15/10 ,  F01D15/12 ,  F01D25/36 ,  F02C7/275 ,  F02K3/06 ,  F16H3/727 ,  H02K7/1823 ,  H02K16/02 ,  F05D2220/323 ,  F05D2220/76 ,  F05D2260/40311 ,  F05D2270/20

Abstract: A turbofan engine includes a first spool including a first turbine, and a first tower shaft engaged to the first spool. A second spool includes a second turbine, and a second tower shaft is engaged to the second spool. A superposition gearbox includes a sun gear, a plurality of intermediate gears engaged to the sun gear, and is supported in a carrier and a ring gear circumscribing the intermediate gears. The first tower shaft or the second tower shaft drives one of the intermediate gears. A drive motor is engaged to drive the sun gear, an inner electric motor, a stator disposed radially outside of the inner electric motor, and an outer electric motor disposed radially outside the stator. A first load on the first spool and a second load on the second spool is adjusted by operation of at least one of the inner electric motor and the outer electric motor.

公开(公告)号：US12055093B2

公开(公告)日：2024-08-06

申请号：US17898728

申请日：2022-08-30

Applicant: RTX CORPORATION

Inventor： Frederick M. Schwarz ,  Daniel Bernard Kupratis

IPC: F02C3/107 ,  F01D25/16 ,  F02C7/36 ,  F02K3/06

CPC classification number: F02C3/107 ,  F01D25/16 ,  F02C7/36 ,  F02K3/06 ,  F05D2220/327 ,  F05D2260/40 ,  F05D2260/40311

Abstract: A gas turbine engine turbine has a high pressure turbine configured to rotate with a high pressure compressor as a high pressure spool in a first direction about a central axis and a low pressure turbine configured to rotate with a low pressure compressor as a low pressure spool in the first direction about the central axis. A power density is greater than or equal to about 1.5 and less than or equal to about 5.5 lbf/cubic inches. A fan is connected to the low pressure spool via a speed changing mechanism and rotates in the first direction.

公开(公告)号：US11781479B2

公开(公告)日：2023-10-10

申请号：US17313605

申请日：2021-05-06

Applicant: RTX Corporation

Inventor： Paul R. Hanrahan ,  Daniel Bernard Kupratis ,  Christopher J. Hanlon

IPC: F02C7/052

CPC classification number: F02C7/052 ,  F05D2220/32

Abstract: A gas turbine engine includes a core section including a compressor, a main combustor, and a main turbine. Combustion products from the main combustor drive rotation of the turbine and the compressor. A power turbine is fluidly connected to the main turbine and driven by exhaust from the main turbine. The gas turbine engine further includes a fan section having a fan rotor located fluidly upstream of the core section. The power turbine is operably connected to the fan rotor to drive rotation of the fan rotor via rotation of the power turbine. The gas turbine engine includes a bleed arrangement having one or more bleed passages configured to divert a bleed airflow from the compressor around the main combustor and main turbine, and reintroduce the bleed airflow into the power turbine.

公开(公告)号：US20240401538A1

公开(公告)日：2024-12-05

申请号：US18805885

申请日：2024-08-15

Applicant: RTX CORPORATION

Inventor： Daniel Bernard Kupratis ,  Coy Bruce Wood

IPC: F02C7/36 ,  F01D15/10 ,  F01D15/12 ,  F01D25/36 ,  F02C7/275 ,  F02K3/06 ,  F16H3/72 ,  H02K7/18 ,  H02K16/02

Abstract: A turbofan engine includes a first spool including a first turbine, and a first tower shaft engaged to the first spool. A second spool includes a second turbine, and a second tower shaft is engaged to the second spool. A superposition gearbox includes a sun gear, a plurality of intermediate gears engaged to the sun gear, and is supported in a carrier and a ring gear circumscribing the intermediate gears. The first tower shaft or the second tower shaft drives one of the intermediate gears. A drive motor is engaged to drive the sun gear, an inner electric motor, a stator disposed radially outside of the inner electric motor, and an outer electric motor disposed radially outside the stator. A first load on the first spool and a second load on the second spool is adjusted by operation of at least one of the inner electric motor and the outer electric motor.