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    SYSTEM AND METHOD OF OPERATING MULTI-ENGINE SYSTEM
    31.
    发明公开
    SYSTEM AND METHOD OF OPERATING MULTI-ENGINE SYSTEM 审中-公开

    公开(公告)号：US20230175444A1

    公开(公告)日：2023-06-08

    申请号：US17540574

    申请日：2021-12-02

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Philippe BEAUCHESNE-MARTEL ,  Gaetan DE LUSSY ,  Jeremie HEBERT ,  Daniel COUTU

    IPC: F02C9/42 ,  F02C7/36

    CPC classification number: F02C9/42 ,  F02C7/36 ,  F05D2220/329 ,  F05D2260/4023 ,  F05D2270/023 ,  F05D2270/304

    Abstract: There is described a method of operating a multi-engine system of an helicopter. The multi-engine system has a first turboshaft engine having a first shaft, a second turboshaft engine having a second shaft, a gearbox having a clutch system, and a range of rotation speeds defined as a placarded zone. The method generally has: rotating the first and second shafts at a flight rotation speed above the placarded zone when clutched to a load; decreasing a rotation speed of the first shaft from the flight rotation speed to a first idle rotation speed above the placarded zone; unclutching the first shaft from the load during the decreasing; and subsequently to the decreasing and the unclutching, simultaneously decreasing the rotation speeds of the first shaft and of the second shaft to a second idle rotation speed below the placarded zone, the simultaneously decreasing including clutching the first shaft to the load.

    Air Turbine Starter with Integrated Motor for Main Engine Cooling
    35.
    发明申请
    Air Turbine Starter with Integrated Motor for Main Engine Cooling 审中-公开

    公开(公告)号：US20180030900A1

    公开(公告)日：2018-02-01

    申请号：US15225145

    申请日：2016-08-01

    Applicant: HONEYWELL INTERNATIONAL INC.

    Inventor： Dave Mathis ,  Mike Bush ,  Jason G. Maalouf ,  James Kroeger

    IPC: F02C7/277

    CPC classification number: F02C7/277 ,  F05D2220/32 ,  F05D2260/4023 ,  F05D2260/40311

    Abstract: An air turbine starter (ATS) includes a support structure and a turbine. The ATS additionally includes a gear train that is configured for receiving torque input from the turbine. The gears include an integrated input gear. The ATS further includes an output member. The output member is operably coupled to the gear train and a main engine input member. The output member is configured to transfer torque from the gear train to the main engine input member. Additionally, the ATS includes a motor system that is supported by the support structure. The motor system includes a motor and a motor output gear. The motor output gear is configured to engage the integrated input gear for selectively delivering motor torque from the motor to the integrated input gear such that the motor torque transfers to the main engine input member to selectively dry motor the main engine at a predetermined speed.

    FLUID DRIVING DEVICE, MOTOR ASSEMBLY AND CENTRIFUGAL FRICTION CLUTCH THEREOF
    37.
    发明申请
    FLUID DRIVING DEVICE, MOTOR ASSEMBLY AND CENTRIFUGAL FRICTION CLUTCH THEREOF 审中-公开
    流体驱动装置，电动机总成及其离心式离合器

    公开(公告)号：US20170058972A1

    公开(公告)日：2017-03-02

    申请号：US15255721

    申请日：2016-09-02

    Applicant: Johnson Electric S.A.

    Inventor： Yue LI ,  Li Sheng LIU ,  Yong WANG ,  Ya Ming ZHANG

    IPC: F16D43/18

    CPC classification number: F16D43/18 ,  F04D25/022 ,  F04D25/08 ,  F04D29/282 ,  F05D2260/4023 ,  H02K7/003 ,  H02K7/108 ,  H02K7/14

    Abstract: A blower, a motor assembly and a centrifugal friction clutch thereof are provided. The centrifugal friction clutch includes: a fixing member for being fixed on a rotary shaft and comprising a guiding groove disposed in a radial direction of the fixing member and passing through an outer circumferential surface of the fixing member; a centrifugal block disposed in the guiding groove and slidable in the guiding groove; and a loading wheel having an inner hole in which the fixing member is received. A gap between a wall of the inner hole and the outer circumferential surface of the fixing member is less than a length of the centrifugal block along its sliding direction. The centrifugal friction clutch reduces vibrations at startup of the motor, thereby effectively reducing the vibrational noise. In addition, this also avoids the startup failure of the motor and effectively improves the startup performance of the motor.

    Abstract translation: 提供鼓风机，马达组件和离心摩擦离合器。 离心摩擦离合器包括：固定部件，用于固定在旋转轴上，并包括沿着定影部件的径向设置并穿过固定部件的外周面的引导槽; 离心块，设置在所述引导槽中并在所述引导槽中滑动; 以及具有内孔的装载轮，固定构件被容纳在该内孔中。 内孔的壁与固定构件的外周面之间的间隙小于离心块的滑动方向的长度。 离心式摩擦离合器降低了电机启动时的振动，从而有效地降低了振动噪音。 此外，还可以避免电机启动故障，有效提高电机的起动性能。

    Gas turbine engine with variable overall pressure ratio
    39.
    发明授权
    Gas turbine engine with variable overall pressure ratio 有权
    具有可变总压比的燃气轮机

    公开(公告)号：US08935912B2

    公开(公告)日：2015-01-20

    申请号：US13316058

    申请日：2011-12-09

    Applicant: James W. Norris ,  Daniel B. Kupratis ,  Gary M. Stetson

    Inventor： James W. Norris ,  Daniel B. Kupratis ,  Gary M. Stetson

    IPC: F02C1/06 ,  F02C9/00 ,  F02K3/02

    CPC classification number: F02C7/36 ,  F02C3/145 ,  F02C7/32 ,  F02K3/105 ,  F05D2220/76 ,  F05D2260/4023 ,  F05D2260/96

    Abstract: A gas turbine engine has a variable overall pressure rate (“OPR”). The engine includes a high pressure compressor having at least a primary stage having a set of primary rotors and a secondary stage having a set of secondary rotors. A clutch is provided to selectively engage the secondary rotors with the primary rotors. Engagement of the clutch may be controlled based on the vehicle travel mode, such as disengaging during a takeoff mode to reduce turbine entry temperature and engaging during a loiter mode to increase OPR.

    Abstract translation: 燃气涡轮发动机具有可变的总压力（“OPR”）。 发动机包括具有至少一个初级级的高压压缩机，该初级级具有一组初级转子和具有一组次级转子的次级级。 提供离合器以选择性地将副转子与主转子接合。 可以基于车辆行驶模式来控制离合器的接合，例如在起飞模式期间分离以降低涡轮进入温度并且在升降机模式期间接合以增加OPR。

    Air turbine starter and method for venting without loss of oil
    40.
    发明授权
    Air turbine starter and method for venting without loss of oil 有权
    空气涡轮起动器和排放方法，不损失油量

    公开(公告)号：US08899910B2

    公开(公告)日：2014-12-02

    申请号：US13218635

    申请日：2011-08-26

    Applicant: Jeffrey M. Makulec ,  Marc Westen

    Inventor： Jeffrey M. Makulec ,  Marc Westen

    IPC: F01D25/18 ,  F02C7/277

    CPC classification number: F02C7/277 ,  F01D25/18 ,  F05D2260/4023 ,  F05D2260/602 ,  F05D2260/605

    Abstract: A clutch assembly includes a shaft, vent plug and oil guide sleeve. The shaft includes an internal cavity, first passages for allowing oil to lubricate clutch components, and second passages for allowing excess oil to drain from the internal cavity. The vent plug has a radial passage in communication with the internal cavity for venting the cavity with an external source of air. The oil guide sleeve directs oil into the internal cavity. A method for lubricating and venting an air turbine starter includes delivering lubricating oil to an internal cavity of a clutch via an oil guide sleeve. The oil guide sleeve prevents oil from exiting the cavity through excess oil drainage passages before it lubricates the clutch components. The method also includes draining excess oil from the cavity through excess oil drainage passages so that excess oil does not substantially impede air flow through a vent plug passage.

    Abstract translation: 离合器组件包括轴，通气塞和导油套筒。 轴包括内腔，用于允许油润滑离合器部件的第一通道和用于允许多余的油从内部空腔排出的第二通道。 通气塞具有与内腔连通的径向通道，用于将外部空气源排出空腔。 油导套将油引导到内腔中。 用于润滑和排空空气涡轮起动器的方法包括经由导油套管将润滑油输送到离合器的内腔。 导油套筒在润滑离合器部件之前防止油通过多余的排油通道离开空腔。 该方法还包括通过多余的排油通道从空腔排出多余的油，使得多余的油基本上不阻碍通过通气塞通道的空气流动。

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