公开(公告)号：US12173659B2

公开(公告)日：2024-12-24

申请号：US18304081

申请日：2023-04-20

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Daniel Alecu

IPC: F02C7/36 ,  F16D3/76

Abstract: The coupling can have a female member having a plurality of female member connections circumferentially arranged along a radially inner face; a male member having a plurality of male member connections circumferentially arranged along a radially outer face; and a coupling member extending annularly around the axis, the coupling member having a strip, the strip having, circumferentially relative the axis, an alternating sequence of outer folds and inner folds, the outer folds connected to the female member via respective ones of the female member connections, the inner folds connected to the male member via respective ones of the male member connections, the inner folds being circumferentially offset from the outer folds in a given angular direction.

公开(公告)号：US20240131607A1

公开(公告)日：2024-04-25

申请号：US17971108

申请日：2022-10-20

Applicant: Pratt & Whitney Canada Corp.

Inventor： Daniel Alecu ,  Laslo T. Diosady

IPC: B23H9/10 ,  B23H3/10 ,  B23H9/16

CPC classification number: B23H9/10 ,  B23H3/10 ,  B23H9/16

Abstract: A system for forming a nozzle inlet of a nozzle includes a nozzle body and an electro-chemical machining (ECM) assembly. The nozzle body includes an external surface. The nozzle body forms a nozzle orifice and a manifold passage. The nozzle orifice extends through the nozzle body between and to a nozzle inlet and a nozzle outlet. The nozzle inlet is disposed at the manifold passage. The nozzle outlet is disposed at the external surface. The ECM assembly is installed on the nozzle body. The ECM assembly includes a machining tool and a flexible line. The machining tool is disposed at the nozzle inlet. The flexible line is attached to the machining tool. The flexible line extends through the nozzle outlet from the machining tool to an exterior of the nozzle body.

公开(公告)号：US11945598B2

公开(公告)日：2024-04-02

申请号：US17669536

申请日：2022-02-11

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Daniel Alecu

IPC: B64D33/12 ,  F28D21/00

CPC classification number: B64D33/12 ,  F28D2021/0021

Abstract: A vapor-to-air heat exchanger for an aircraft powerplant that includes: a pressurized vapor source supplying vapor; and a condenser including a condenser inlet in fluid communication with the pressurized vapor source to receive the vapor, a condenser outlet, and at least one pneumatic vessel defining a cavity in fluid communication between the condenser inlet and the condenser outlet. The pneumatic vessel is reversibly inflatable to be configurable between a collapsed vessel configuration and an inflated vessel configuration. A volume of the cavity is greater in the inflated vessel configuration than in the collapsed vessel configuration. The pneumatic vessel is inflatable from the collapsed vessel configuration to the inflated vessel configuration when the cavity is pressurized by the vapor.

公开(公告)号：US11794914B2

公开(公告)日：2023-10-24

申请号：US17379285

申请日：2021-07-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Ivan Sidorovich Paradiso ,  Daniel Alecu

IPC: B64D27/24 ,  B64D27/02 ,  B64D41/00 ,  F01D13/02 ,  F01D15/10 ,  F02C3/30

CPC classification number: B64D27/24 ,  B64D27/023 ,  B60L2200/10 ,  B64D2027/026 ,  B64D2041/002 ,  B64D2221/00 ,  F01D13/02 ,  F01D15/10 ,  F02C3/30 ,  F05D2220/50 ,  F05D2220/76 ,  F05D2270/09 ,  H02J2310/44

Abstract: Electric aircraft power plants and associated methods are provided. One power plant includes an emergency power unit (EPU) for providing electric power in the event of a malfunction of a battery pack of an electric aircraft to permit the electric aircraft to make an emergency maneuver. The EPU includes a rocket engine for generating a stream of exhaust fluid using a rocket propellant, a turbine operatively connected to extract energy from the stream of exhaust fluid generated by the rocket engine, and an electric generator operatively connected to be driven by the turbine and to supply electric power to an electric motor propelling the electric aircraft.

公开(公告)号：US11692466B2

公开(公告)日：2023-07-04

申请号：US16426876

申请日：2019-05-30

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Dana Tomescu ,  Daniel Alecu

IPC: H02K1/32 ,  H02K7/00 ,  F01M1/02 ,  F16N13/20 ,  F16N39/06 ,  F04B37/00 ,  B64D33/08 ,  H02K7/08 ,  H02K9/19 ,  H02K9/26 ,  H02K7/18 ,  F16C33/66 ,  F01M11/03

CPC classification number: F01M1/02 ,  B64D33/08 ,  F01M11/03 ,  F04B29/00 ,  F16C33/6659 ,  F16N13/20 ,  F16N39/06 ,  H02K1/32 ,  H02K7/003 ,  H02K7/085 ,  H02K7/1823 ,  H02K9/19 ,  H02K9/26 ,  F01M2001/0238 ,  F16N2013/205 ,  F16N2210/08 ,  F16N2210/16

Abstract: A machine includes a liquid lubrication system and a shaft, the shaft being rotatable about a rotation axis, the shaft including a first part, a second part engaged coaxially with the first part, and a journal bearing between the first part and the second part, the first part being rotatable relative to the second part about the rotation axis, a helical feature disposed between the first part and the second part and configured to define a helical pump between the first part and the second part, the pump being hydraulically connected to the liquid lubrication system, the journal bearing being disposed adjacent to the helical feature.

公开(公告)号：US11603842B2

公开(公告)日：2023-03-14

申请号：US16540589

申请日：2019-08-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Dana Tomescu ,  Daniel Alecu

IPC: F04C29/02 ,  F04C27/00 ,  F04D29/063 ,  F04C18/16 ,  F16N7/36 ,  F04C15/00

Abstract: A method of priming a pump includes supplying lubricant, via a priming flow path, into an interface defined between a first part of a shaft of the pump and a second part of the shaft coaxially engaged with the first part of the shaft to define the pump, the first part of the shaft rotatable about a rotation axis relative to the second part of the shaft, and supplying lubricant into the interface via a lubrication flow path that is different from the priming flow path. A method of lubricating an aircraft motor of an aircraft engine, and a machine for an aircraft engine are also described.

公开(公告)号：US11549440B2

公开(公告)日：2023-01-10

申请号：US16839341

申请日：2020-04-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Daniel Alecu

IPC: F02C6/08 ,  F02C7/24 ,  F16K31/126

Abstract: Pressure regulators together with associated methods and systems are provided. An embodiment of a pressure regulator includes a chamber having an inlet port for receiving a fluid and an outlet port for delivering the fluid at a regulated pressure. The pressure regulator includes a diaphragm defining at least part of the chamber, and the diaphragm defining a first orifice therethrough. The pressure regulator includes a spring configured to interact with the diaphragm. The pressure regulator includes an interface operatively disposed between the spring and the diaphragm. The interface includes a contact surface for contacting the diaphragm, and the contact surface is convex toward the diaphragm. The interface defines a second orifice therethrough that is in fluid communication with the first orifice in the diaphragm. The first and second orifices define a relief port for venting the chamber to an ambient environment external to the chamber.

公开(公告)号：US20220403781A1

公开(公告)日：2022-12-22

申请号：US17890023

申请日：2022-08-17

Applicant: Pratt & Whitney Canada Corp.

Inventor： Enzo Macchia ,  Daniel Alecu

IPC: F02C7/14 ,  F02C7/06 ,  F02C7/18

Abstract: An oil tank for a gas turbine engine is provided. The oil tank includes an oil cavity defined within structural walls of a nacelle of the gas turbine engine, the oil cavity having an oil inlet and an oil outlet. At least one of the structural walls has an interior side facing the oil cavity and an exterior side. The interior side includes a plurality of upstanding protrusions extending into the oil cavity and fully immersed in oil when the gas turbine engine is in use during steady state operation. The exterior side includes a plurality of fins extending therefrom and exposed to an ambient air stream during steady state operation of the gas turbine engine.

公开(公告)号：US11162421B2

公开(公告)日：2021-11-02

申请号：US16660247

申请日：2019-10-22

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean-Sébastien Dick ,  Daniel Alecu ,  Kenneth Parkman

IPC: F02C7/06 ,  F01D25/18 ,  F16C33/66

Abstract: The bearing chamber assembly can have a bearing chamber wall extending annularly and having a drain aperture, the drain aperture connecting a scavenge line, and a baffle, the baffle having an apertured sheet connected at one end to the bearing chamber wall, extending from the connected end over and past the scavenge port to a free edge, the free edge spaced from the bearing chamber wall.

公开(公告)号：US11118698B2

公开(公告)日：2021-09-14

申请号：US16042314

申请日：2018-07-23

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Daniel Alecu ,  Roberto Brito ,  Kimberley Ann Macdonald ,  Patrick Beauchamp

IPC: F16K17/04 ,  F16K17/06

Abstract: A valve has a housing having an inlet and an outlet. A valve element is biased towards a closed position in which the valve element restricts fluid flow from the inlet to the outlet. The valve element is axially movable by fluid pressure at the inlet towards an open position in which the inlet is in fluid flow communication with the outlet. The valve further has a damping chamber having a metering orifice in fluid communication with the inlet. The damping chamber has an axially facing surface defined by the valve element and having a variable volume varying from a minimum volume when the valve element is in its closed position to a maximum volume when the valve element is in its open position.