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公开(公告)号：US20210131308A1
公开(公告)日：2021-05-06
申请号：US16673141
申请日：2019-11-04
Applicant: United Technologies Corporation
Inventor： Zaffir A. Chaudhry , Goran Djuknic , Yan Chen
Abstract: A bearing assembly monitoring system includes a bearing assembly supporting rotation of a rotating member. The bearing assembly includes a fixed portion and rotatable portion. A piezoelectric element is mounted to the fixed portion and generates an electric signal in response to a vibration of the fixed portion. A first transceiver is electrically coupled to the piezoelectric element to receive the electrical signal generated by the piezoelectric element and generate a signal indicative of the vibration of the fixed portion. A gas turbine engine bearing monitoring system and a method are also disclosed.
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公开(公告)号：US10969017B2
公开(公告)日：2021-04-06
申请号：US16373165
申请日：2019-04-02
Applicant: United Technologies Corporation
Inventor： Changsheng Guo , Zaffir A. Chaudhry , Nasr A. Shuaib
Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.
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公开(公告)号：US20200318740A1
公开(公告)日：2020-10-08
申请号：US16373165
申请日：2019-04-02
Applicant: United Technologies Corporation
Inventor： Changsheng Guo , Zaffir A. Chaudhry , Nasr A. Shuaib
Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.
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公开(公告)号：US20150369699A1
公开(公告)日：2015-12-24
申请号：US14737257
申请日：2015-06-11
Applicant: United Technologies Corporation
Inventor： Yan Chen , Zaffir A. Chaudhry
IPC: G01M13/04
CPC classification number: G01M13/045 , G01M13/028
Abstract: A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing includes detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear vibrations. A carrier frequency is identified from the generated signal. A band pass filter is applied to the signal at the carrier frequency to create a filtered signal. An envelope is extracted from the filtered signal to create an extracted signal. A time-frequency analysis is then applied to the extracted signal which allows for identification of degradation of the gears.
Abstract translation: 一种用于监测具有至少两个相互啮合的齿轮和至少一个轴承的齿轮和轴承系统的方法，包括用至少一个振动传感器检测齿轮和轴承振动，所述振动传感器可操作以产生表示检测到的齿轮振动的信号。 根据产生的信号识别载波频率。 带通滤波器以载波频率施加到信号以产生滤波信号。 从滤波的信号中提取包络线以产生提取的信号。 然后对提取的信号应用时间 - 频率分析，其允许识别齿轮的劣化。
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公开(公告)号：US20200332673A1
公开(公告)日：2020-10-22
申请号：US16388199
申请日：2019-04-18
Applicant: United Technologies Corporation
Inventor： Michael M. Joly , Andrzej Ernest Kuczek , Zaffir A. Chaudhry , Gorazd Medic , Dilip Prasad
Abstract: A gas turbine engine includes a plurality of blades circumferentially spaced from each other. A plurality of rings are spaced radially outward from the plurality of blade. At least one actuator is in mechanical communication with the plurality of rings for moving the plurality of rings in an axial direction to create an axial gap adjacent at least one of the plurality of rings.
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Patent Agency Ranking
公开(公告)号：US10738736B2
公开(公告)日：2020-08-11
申请号：US14315396
申请日：2014-06-26
Applicant: United Technologies Corporation
Inventor： Zaffir A. Chaudhry
Abstract: An assembly for pivoting a flap according to an exemplary aspect of the present disclosure includes, among other things, a structure is mounted at least partially around an axis. The structure is attached to a pivotable flap arranged to define a nozzle area. A cable passes through an orifice defined by the flap. An actuator system is operable to mechanically retract the cable therein to lessen the nozzle area and mechanically extend the cable to enable the flow to increase the nozzle area. The actuator system is engaged with the cable. A segment of the cable, opposite the actuator system, is attached to a fixed structure. A method of providing a variable fan exit area is also disclosed.
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公开(公告)号：US09841352B2
公开(公告)日：2017-12-12
申请号：US14737257
申请日：2015-06-11
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Yan Chen , Zaffir A. Chaudhry
CPC classification number: G01M13/045 , G01M13/028
Abstract: A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing includes detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear vibrations. A carrier frequency is identified from the generated signal. A band pass filter is applied to the signal at the carrier frequency to create a filtered signal. An envelope is extracted from the filtered signal to create an extracted signal. A time-frequency analysis is then applied to the extracted signal which allows for identification of degradation of the gears.
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公开(公告)号：US11105707B2
公开(公告)日：2021-08-31
申请号：US16799281
申请日：2020-02-24
Applicant: United Technologies Corporation
Inventor： Daniel L. Gysling , Joseph V. Paturzo , Richard A. Lomenzo , Allison Nicklous , Zaffir A. Chaudhry
IPC: G01M7/02 , G01M13/005 , G01M15/14
Abstract: A system is provided for testing a component. This system includes a support structure, an excitation system and a sensor system. The support structure is configured to support the component. The excitation system includes a plurality of excitation devices arranged in an array. The plurality of excitation devices at least include a first excitation device, a second excitation device and a third excitation device. The excitation system is configured to respectively control each of the plurality of excitation devices to excite a vibratory response in the component. The sensor system is configured to output data indicative of the vibratory response.
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公开(公告)号：US10914191B2
公开(公告)日：2021-02-09
申请号：US15971236
申请日：2018-05-04
Applicant: United Technologies Corporation
Inventor： Alan Matthew Finn , Zaffir A. Chaudhry
Abstract: An optical in-situ system for a gas turbine engine blade inspection comprises a camera configured to capture images of a forward surface of at least one gas turbine engine blade; and a processor coupled to the camera, the processor configured to determine damage to the at least one gas turbine engine blade based on image analytics.
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公开(公告)号：US10415419B2
公开(公告)日：2019-09-17
申请号：US15406324
申请日：2017-01-13
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Fanping Sun , Zaffir A. Chaudhry , Lee A. Hoffman , Hailing Wu , Seung Bum Kim , Michael G. McCaffrey , Joel H. Wagner
Abstract: A system for modulating turbine blade tip clearance is provided. The system may comprise an actuation control system having at least one actuator configured to modulate turbine blade tip clearance between a turbine blade tip and a blade outer air seal (BOAS). Each actuator may be coupled to the BOAS. Each actuator may comprise a solid-state motion amplification device such as a flextensional actuator. The actuators may be configured to move the BOAS in a radial direction from a first position to a second position to control tip clearance.
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