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    ENGINE STARTING SYSTEM USING STORED ENERGY
    14.
    发明申请
    ENGINE STARTING SYSTEM USING STORED ENERGY 审中-公开

    公开(公告)号：US20180058412A1

    公开(公告)日：2018-03-01

    申请号：US15805602

    申请日：2017-11-07

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Kevin A. DOOLEY ,  Keith MORGAN ,  Tatjana PEKOVIC

    IPC: F02N11/08 ,  H02P9/48 ,  F02C7/26

    Abstract: There is described a method for and system for starting at least one engine from a twin engine installation. The starting system comprises a first engine arrangement comprising a first electric machine having a single rotor dual stator configuration, a first dual channel power control unit coupled to the first electric machine, and a first dual channel full authority digital engine control (FADEC) coupled to the first dual channel power control unit; a second engine arrangement comprising a second electric machine having a single rotor dual stator configuration, a second dual channel power control unit coupled to the second electric machine, and a second dual channel full authority digital engine control (FADEC) coupled to the second dual channel power control unit; an energy storage unit coupled to the first engine arrangement and the second engine arrangement and having at least a first super-capacitor and a second super-capacitor; and a DC to DC converter configured to receive a first voltage level from a power source, increase the first voltage level to a second voltage level, and charge the first super-capacitor and the second super-capacitor to the second voltage level.

    SUB-IDLE HYBRID OPERATION MODE FOR HYBRID ELECTRIC PROPULSION SYSTEM
    15.
    发明公开
    SUB-IDLE HYBRID OPERATION MODE FOR HYBRID ELECTRIC PROPULSION SYSTEM 审中-公开

    公开(公告)号：US20240270398A1

    公开(公告)日：2024-08-15

    申请号：US18441405

    申请日：2024-02-14

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Mert CEVIK ,  James Robert JARVO ,  Keith MORGAN ,  Elizabeth GIOIA

    IPC: B64D31/18 ,  B64D27/33

    CPC classification number: B64D31/18 ,  B64D27/33

    Abstract: A method of operating a hybrid engine for an aircraft, the hybrid engine having a thermal engine and an electric motor. The method includes verifying, using an engine control unit of the hybrid engine, that a selected power level is under a predetermined threshold for operation of the hybrid engine in a sub-idle hybrid mode. The method further includes operating the hybrid engine in the sub-idle hybrid mode, using the engine control unit, by controlling the thermal engine to operate in a standby mode, and by controlling the electric motor to operate in an active mode wherein the electric motor provides a majority of a propulsive power to the aircraft, wherein in the standby mode the thermal engine operates in a sub-idle condition to provide at most minimal propulsive power to the aircraft.

    SYSTEM AND METHOD FOR OPERATING ENGINES OF AN AIRCRAFT IN AN ASYMMETRIC OPERATING REGIME
    16.
    发明申请
    SYSTEM AND METHOD FOR OPERATING ENGINES OF AN AIRCRAFT IN AN ASYMMETRIC OPERATING REGIME 审中-公开

    公开(公告)号：US20200255159A1

    公开(公告)日：2020-08-13

    申请号：US16654366

    申请日：2019-10-16

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Patrick MANOUKIAN ,  Keith MORGAN

    IPC: B64D31/10 ,  B64D31/14 ,  F02C9/00

    Abstract: Methods and systems for operating an aircraft having two or more engines are described. The method comprises receiving an engine availability confirmation when a set of engine parameters meet engine operating conditions for an asymmetric operating regime, receiving an aircraft availability confirmation when a set of aircraft parameters meet aircraft operating conditions for the asymmetric operating regime, outputting an availability message to a cockpit of the aircraft in response to receiving the engine availability confirmation and the aircraft availability confirmation, receiving a pilot-initiated request to operate the engine in the asymmetric operating regime, and commanding the engines to operate in the asymmetric operating regime in response to the pilot-initiated request.

    TURBOSHAFT GAS TURBINE ENGINE
    18.
    发明申请
    TURBOSHAFT GAS TURBINE ENGINE 审中-公开

    公开(公告)号：US20200047876A1

    公开(公告)日：2020-02-13

    申请号：US16535397

    申请日：2019-08-08

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Keith MORGAN ,  Eric DUROCHER

    IPC: B64C27/12 ,  B64D27/10 ,  F02C7/36 ,  F02C6/20 ,  F02C6/02 ,  F01D17/16

    Abstract: The turboshaft engine for a rotorcraft includes a low pressure spool having a low pressure compressor and a low pressure turbine section, and a high pressure spool having a high pressure compressor and a high pressure turbine section. The spools are independently rotatable relative to one another. The low pressure compressor section includes a mixed flow rotor. A set of variable guide vanes (VGVs) are disposed upstream of each of the low pressure and high pressure compressors, the VGVs being configured to be independently operable relative to one another.

    MULTIPLE TURBOSHAFT ENGINE CONTROL METHOD AND SYSTEM FOR HELICOPTERS
    19.
    发明申请
    MULTIPLE TURBOSHAFT ENGINE CONTROL METHOD AND SYSTEM FOR HELICOPTERS 审中-公开
    用于直升机的多用途涡轮发动机发动机控制方法和系统

    公开(公告)号：US20160333782A1

    公开(公告)日：2016-11-17

    申请号：US15223030

    申请日：2016-07-29

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Keith MORGAN

    IPC: F02C6/02 ,  F02C9/42 ,  F02C7/36

    Abstract: Electric power from the low spool of a turboshaft engine is transferred to drive the compressor of another turboshaft engine. This is used to assist in maintaining the other turboshaft idling while a single engine provides flight power or to increase acceleration for instance.

    Abstract translation: 来自涡轮轴发动机的低阀芯的电力被传送以驱动另一个涡轮轴发动机的压缩机。 这用于在单个发动机提供飞行动力或增加加速度的情况下帮助维持另一个涡轮轴空转。

    SYSTEM AND METHOD FOR ENGINE TRANSIENT POWER RESPONSE
    20.
    发明申请
    SYSTEM AND METHOD FOR ENGINE TRANSIENT POWER RESPONSE 有权
    发动机瞬态动力响应系统与方法

    公开(公告)号：US20140278014A1

    公开(公告)日：2014-09-18

    申请号：US13796624

    申请日：2013-03-12

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： François BELLEVILLE ,  Philippe BEAUCHESNE-MARTEL ,  Keith MORGAN

    IPC: F02D29/02

    CPC classification number: F02D29/02 ,  F02C9/54 ,  F05D2270/044 ,  F05D2270/053 ,  F05D2270/304 ,  F05D2270/335

    Abstract: There is provided a system and method for controlling an engine. A request signal indicative of a demand for the engine to output a required power level is first receive. A position control signal is then generated in response to the request signal. The position request signal is indicative of a first request for adjusting a present position of a variable geometry mechanism of the engine towards a commanded position to achieve the required power level. An acceleration rate control signal is further generated on the basis of the position control signal. The acceleration rate control signal is indicative of a second request for adjusting an acceleration rate of the engine in accordance with the commanded position of the variable geometry mechanism. The position control signal and the acceleration rate control signal are then output to the engine.

    Abstract translation: 提供了一种用于控制发动机的系统和方法。 首先接收指示发动机输出所需功率水平的要求的请求信号。 然后响应于请求信号产生位置控制信号。 位置请求信号表示第一请求，用于将发动机的可变几何机构的当前位置调整到指令位置以实现所需的功率水平。 基于位置控制信号进一步产生加速度控制信号。 加速度控制信号表示根据可变几何机构的指令位置调整发动机的加速度的第二请求。 然后将位置控制信号和加速度控制信号输出到发动机。

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