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公开(公告)号：US12234768B2
公开(公告)日：2025-02-25
申请号：US18346572
申请日：2023-07-03
Applicant: Pratt & Whitney Canada Corp.
Inventor： Daniel Alecu , Dave Menheere
Abstract: A gas turbine engine includes a turbine for driving a shaft to in turn drive a rotor. A combustor receives compressed air, and combusts the compressed air. The shaft is supported by at least one bearing. An oil delivery system is associated with the at least one bearing including an oil scoop rotating with the at least one shaft and a stationary oil jet provided with a source of lubricant. A mixed fluid chamber is within the shaft. The mixed fluid chamber is connected to an air exit. There further is an oil chamber radially outward of the mixed fluid chamber. The oil chamber is connected to the at least one bearing.
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公开(公告)号：US20250012217A1
公开(公告)日：2025-01-09
申请号：US18346572
申请日：2023-07-03
Applicant: Pratt & Whitney Canada Corp.
Inventor： Daniel Alecu , Dave Menheere
IPC: F02C7/06
Abstract: A gas turbine engine includes a turbine for driving a shaft to in turn drive a rotor. A combustor receives compressed air, and combusts the compressed air. The shaft is supported by at least one bearing. An oil delivery system is associated with the at least one bearing including an oil scoop rotating with the at least one shaft and a stationary oil jet provided with a source of lubricant. A mixed fluid chamber is within the shaft. The mixed fluid chamber is connected to an air exit. There further is an oil chamber radially outward of the mixed fluid chamber. The oil chamber is connected to the at least one bearing.
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公开(公告)号：US12168526B2
公开(公告)日：2024-12-17
申请号：US18239790
申请日：2023-08-30
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu
Abstract: An aircraft assist system described herein includes an aircraft coupling counterpart attached to a strut of a landing gear of an aircraft, and an assist vehicle. The assist vehicle includes a frame, ground-engaging wheels mounted to the frame, a power source for driving one or more of the ground-engaging wheels, and a vehicle coupling counterpart for engagement with the aircraft coupling counterpart. The aircraft coupling counterpart and the vehicle coupling counterpart define a swivel connection for transferring a propulsive force from the takeoff assist vehicle to the aircraft. The aircraft coupling counterpart is disengageable from the vehicle coupling counterpart by upward movement of the aircraft coupling counterpart relative to the vehicle coupling counterpart.
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公开(公告)号：US12123305B2
公开(公告)日：2024-10-22
申请号：US17993517
申请日：2022-11-23
Applicant: Pratt & Whitney Canada Corp.
Inventor： Daniel Alecu , Ivan Sidorovich Paradiso
CPC classification number: F01D11/003 , F01D5/025 , F01D5/30 , F05D2220/32 , F05D2240/20 , F05D2240/55
Abstract: A gas turbine engine rotor assembly is provided that includes a shaft, a rotor, and a seal assembly. The seal assembly is configured to seal between a first and second rotor compartments on opposite sides of the seal assembly. The seal assembly includes a seal groove and a split piston ring seal. The split piston ring seal is configured such that air in the first rotor compartment at P1 produces a radial force acting on the split piston ring seal, and air in the second rotor compartment at P2 produces a second force acting on the split piston ring seal, wherein the second force is directed radially inward and the first force is directed radially outward, and the second force is greater than the first force.
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公开(公告)号：US12085022B2
公开(公告)日：2024-09-10
申请号：US16835813
申请日：2020-03-31
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu , Ninad Joshi
Abstract: A fluid system of an aircraft engine includes a first and second fluid conduits. The first conduit fluid conduit fluidly connects to the aircraft engine. A pump fluidly connects to the first fluid conduit and moves therethrough a fluid imparting an excitation frequency to the fluid. The second fluid conduit fluidly connects to the first fluid conduit and to a pressure sensor. A weight is disposed in the second fluid conduit and movable between a first and second positions. A mass of the weight and a liquid capacitance of the second fluid conduit between the second position and a second end of the second fluid conduit define a resonance frequency that is less than the excitation frequency. Fluid pressure monitoring and pressure noise filter construction methods are also disclosed.
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Patent Agency Ranking
公开(公告)号：US12065972B2
公开(公告)日：2024-08-20
申请号：US18092637
申请日：2023-01-03
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu , David Menheere
IPC: F02C7/28 , F01D9/06 , F01D25/12 , F01D25/18 , F02C6/08 , F02C7/18 , F02C9/18 , F02C3/04 , F02C7/06 , F02C9/16
CPC classification number: F02C7/28 , F01D9/065 , F01D25/125 , F01D25/183 , F02C6/08 , F02C7/18 , F02C9/18 , F02C3/04 , F02C7/06 , F02C9/16 , F05D2220/32 , F05D2240/35 , F05D2240/55 , F05D2240/60 , F05D2260/221
Abstract: Systems and methods for delivering a buffer fluid to a shaft seal of a gas turbine engine are provided. An exemplary system includes, a buffer fluid source, one or more first conduits providing fluid communication between the buffer fluid source and the shaft seal along a first route, and one or more second conduits providing fluid communication between the buffer fluid source and the shaft seal along a second route different from the first route. A heat exchanger is also disposed along the first route to facilitate heat transfer between buffer fluid in the one or more first conduits and a cooling fluid.
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公开(公告)号：US20240227050A9
公开(公告)日：2024-07-11
申请号：US17971108
申请日：2022-10-21
Applicant: Pratt & Whitney Canada Corp.
Inventor： Daniel Alecu , Laslo T. Diosady
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.
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公开(公告)号：US11994080B2
公开(公告)日：2024-05-28
申请号：US17668576
申请日：2022-02-10
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu
CPC classification number: F02D41/064 , F02C7/06 , F05D2220/323 , F05D2260/98 , F05D2270/303 , F05D2270/44
Abstract: A heating system for heating a component in a liquid distribution system of an aircraft engine. The liquid distribution system feeds a liquid to the component. The heating system includes an acoustic generator disposed in communication with the component via a liquid passage of the liquid distribution system. The liquid passage defines a length between the acoustic generator and the component. The acoustic generator generates a resonant frequency selected as a function of the length of the liquid passage to generate a standing wave in the liquid within the liquid passage. The standing wave transmitting energy to the component to heat the component.
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公开(公告)号：US11788433B2
公开(公告)日：2023-10-17
申请号：US17510804
申请日：2021-10-26
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Kenneth Parkman , Daniel Alecu
CPC classification number: F01D25/20 , F01M1/02 , F01M2001/0238 , F01M2250/60
Abstract: Lubrication systems of an aircraft engine and associated methods are provided. The lubrication system includes a chamber having a fluid inlet for receiving lubricating fluid into the chamber, and a fluid outlet for draining the lubricating fluid from the chamber. The fluid outlet is disposed on a wall defining part of the chamber. A rotor is disposed inside the chamber and interacts with the lubricating fluid inside the chamber. The rotor is rotatable in a rotation direction about a rotation axis. A perforated baffle is disposed in the chamber for interacting with the lubricating fluid inside the chamber. The perforated baffle includes a base attached to the wall of the chamber. The base of the perforated baffle is disposed at an angular position preceding the fluid outlet relative to the rotation direction of the rotor.
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公开(公告)号：US11603796B2
公开(公告)日：2023-03-14
申请号：US17344185
申请日：2021-06-10
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Laslo Diosady , Daniel Alecu
Abstract: The auxiliary duct can branch radially outwardly from the bypass duct, have a proximal end fluidly connecting the bypass duct and a distal end, a valve can be activatable to selectively open and close the auxiliary passage, and a structure can protrude partially from the auxiliary duct into the auxiliary passage, the structure spaced apart from the proximal end, between the proximal end and the valve, the structure generating lesser pressure losses when flow in the auxiliary passage is directed towards the distal end than when the flow is directed towards the proximal end.
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