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    SHAFT SHEAR DETECTION FOR GAS TURBINE ENGINES
    1.
    发明申请
    SHAFT SHEAR DETECTION FOR GAS TURBINE ENGINES 审中-公开

    公开(公告)号：US20190170068A1

    公开(公告)日：2019-06-06

    申请号：US15829145

    申请日：2017-12-01

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Michael DARBY ,  Reza PEDRAMI

    IPC: F02C9/28 ,  F16C3/02

    Abstract: A system and a method for detecting a shaft shear event in a gas turbine engine are disclosed. The system comprises a sensor configured to detect a shaft shear force exerted by a shaft on a support structure supporting the shaft where the shaft shear force is indicative of shearing of the shaft. The system also comprises a controller operatively coupled to the sensor and configured to initiate a shutdown of the gas turbine engine in response to the detection of the shaft shear force by the sensor.

    SYSTEM AND METHOD FOR AIRCRAFT PROPELLER CONTROL
    3.
    发明申请
    SYSTEM AND METHOD FOR AIRCRAFT PROPELLER CONTROL 审中-公开

    公开(公告)号：US20180334242A1

    公开(公告)日：2018-11-22

    申请号：US15599049

    申请日：2017-05-18

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Reza PEDRAMI ,  James JARVO

    IPC: B64C11/38 ,  B64C11/40 ,  B64D27/10

    CPC classification number: B64C11/385 ,  B64C11/40 ,  B64C27/64 ,  B64D27/10

    Abstract: A system and method for controlling an aircraft propeller are provided. In anticipation of a condition in which a parameter related to an angle of a plurality of blades of the propeller reaches a value beyond a predetermined threshold, a first control signal is output comprising instructions to actuate a feather valve operatively coupled to an actuator configured to adjust the angle in response to hydraulic pressure, thereby causing the feather valve to provide the hydraulic pressure to the actuator and the angle to be adjusted for bringing the parameter towards the threshold. When the parameter reaches the predetermined threshold, a second control signal is output comprising instructions to hold the feather valve at a position in which the hydraulic pressure is withheld from the actuator, thereby causing the angle to remain unchanged.

    SYSTEM AND METHOD FOR AN ENGINE CONTROLLER BASED ON INVERSE DYNAMICS OF THE ENGINE
    7.
    发明申请
    SYSTEM AND METHOD FOR AN ENGINE CONTROLLER BASED ON INVERSE DYNAMICS OF THE ENGINE 审中-公开

    公开(公告)号：US20190153962A1

    公开(公告)日：2019-05-23

    申请号：US16258166

    申请日：2019-01-25

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Gabriel MEUNIER ,  Reza PEDRAMI

    IPC: F02C9/26 ,  F02C9/28

    Abstract: Systems and methods for controlling a gas turbine engine are provided. The system comprises an interface to a fuel flow metering valve for controlling a fuel flow to the engine in response to a fuel flow command and a controller connected to the interface and configured for outputting the fuel flow command to the fuel flow metering valve in accordance with a required fuel flow. The controller comprises a feedforward controller configured for receiving a requested engine speed and acceleration, obtaining a steady-state fuel flow for the requested engine speed and a relationship between fuel flow and gas generator speed, and determining the required fuel flow to obtain the requested engine acceleration as a function of the requested engine speed, the steady-state fuel flow, and the relationship between fuel flow and gas generator speed.

    DYNAMICALLY DETECTING RESONATING FREQUENCIES OF RESONATING STRUCTURES
    8.
    发明申请
    DYNAMICALLY DETECTING RESONATING FREQUENCIES OF RESONATING STRUCTURES 有权
    动态地检测共振结构的共振频率

    公开(公告)号：US20140327489A1

    公开(公告)日：2014-11-06

    申请号：US13888032

    申请日：2013-05-06

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Poi Loon TANG ,  Teuvo SAARIO ,  Reza PEDRAMI

    IPC: H04B3/04

    CPC classification number: H03H7/0153 ,  B64C27/001 ,  B64C2220/00 ,  G05B21/02

    Abstract: There is described herein a real-time scheme, implementable in software, hardware, or a combination thereof, to detect a resonating frequency of a structure from a sensed signal and dynamically set the center frequency of an adaptive compensator for effective attenuation of the resonating frequency.

    Abstract translation: 这里描述了一种可在软件，硬件或其组合中实现的实时方案，以从感测信号中检测结构的谐振频率，并动态地设置自适应补偿器的中心频率以有效衰减谐振频率 。

    PRINTED CIRCUIT BOARD ASSEMBLY FOR AIRCRAFT ENGINE, AND METHOD OF MONITORING SAME
    9.
    发明申请
    PRINTED CIRCUIT BOARD ASSEMBLY FOR AIRCRAFT ENGINE, AND METHOD OF MONITORING SAME 有权

    公开(公告)号：US20210341530A1

    公开(公告)日：2021-11-04

    申请号：US16862685

    申请日：2020-04-30

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Reza PEDRAMI ,  Carmine LISIO ,  Richard KUDRNA

    IPC: G01R31/28 ,  G01R31/304

    Abstract: There is provided an aircraft engine printed circuit board assembly generally having a functional circuit contributing to the operation of an aircraft engine. The functional circuit has a first substrate portion, a first electronic component supported by the first substrate portion, and a first electrical conductor supported by the first substrate portion and leading to the first electronic component. The aircraft engine printed circuit board assembly generally has a monitoring circuit having a second substrate portion, a second electronic component supported by the second substrate portion, a second electrical conductor supported by the second substrate portion and leading to the second electronic component, the second electrical conductor having a shorter life expectancy than the first electrical conductor, and a detector monitoring an indicator of operativeness of the second electrical conductor, in which the first electrical conductor and the second electrical conductor are both exposed to the same environment.

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