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    TRANSMISSION FOR ENGINE WITH TWO POWER INPUTS
    2.
    发明申请
    TRANSMISSION FOR ENGINE WITH TWO POWER INPUTS 审中-公开

    公开(公告)号：US20200072322A1

    公开(公告)日：2020-03-05

    申请号：US16115790

    申请日：2018-08-29

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Roberto BRITO ,  Martin POULIN

    IPC: F16H3/72 ,  F16H3/00 ,  F16H37/06 ,  F02C7/36

    Abstract: An engine includes first and second power inputs, and a power output. A transmission includes an epicyclic gear train engaged with the first power input and selectively engageable with the power output. The gear train has a sun gear centrally disposed and defining a center axis of the gear train, a ring gear, and planet gears mounted to a carrier. The planet gears are rotatable about respective planet gear axes. The planet gears are disposed in meshed engagement with the sun gear and the ring gear. A brake engageable in a first position with one of the sun gear, the carrier, and the ring gear slows a rotation thereof to transfer power from the first power input to the power output. The brake in a second position is disengageable from the sun gear, the carrier or the ring gear to decouple the first power input from the power output.

    DUAL LAND JOURNAL BEARINGS FOR A COMPOUND PLANETARY SYSTEM
    4.
    发明申请
    DUAL LAND JOURNAL BEARINGS FOR A COMPOUND PLANETARY SYSTEM 有权

    公开(公告)号：US20210254659A1

    公开(公告)日：2021-08-19

    申请号：US16802715

    申请日：2020-02-27

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Louis BRILLON ,  Martin POULIN

    IPC: F16C17/02

    Abstract: A journal bearing assembly for rotatably supporting at least one gear, comprising a pin and a journal shaft. The journal shaft includes an inner cavity receiving the pin and an outer surface including a plurality of contact surfaces supporting the at least one gear and at least one annular groove separating adjacent contact surfaces. The pin is configured to support the journal shaft at a support position in the inner cavity.

    LUBRICANT DRAIN CONDUIT FOR GAS TURBINE ENGINE
    7.
    发明申请
    LUBRICANT DRAIN CONDUIT FOR GAS TURBINE ENGINE 有权

    公开(公告)号：US20210047941A1

    公开(公告)日：2021-02-18

    申请号：US16540667

    申请日：2019-08-14

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Martin POULIN ,  Sean POWERS

    IPC: F01D25/18 ,  F16H57/04

    Abstract: An assembly for a gas turbine engine having: static and rotating components; a seal between the static and rotating components, and between a cavity and an environment outside thereof, the cavity having an inlet fluidly connectable to a source of lubricant and an outlet fluidly connectable to a scavenge pump for drawing lubricant out of the cavity; and a drain conduit having a drain inlet outside the cavity in proximity to the seal for receiving leaked lubricant, and a drain outlet fluidly connected to the outlet of the cavity, the drain outlet located in proximity to a scavenge inlet via which the lubricant exits the cavity to flow toward the scavenge pump such that, in use, a lubricant flow within the drain conduit is entrained by the lubricant exiting the cavity via the scavenge inlet.

    MULTI-SPOOL GAS TURBINE ENGINE
    8.
    发明申请
    MULTI-SPOOL GAS TURBINE ENGINE 审中-公开

    公开(公告)号：US20180223740A1

    公开(公告)日：2018-08-09

    申请号：US15428776

    申请日：2017-02-09

    Applicant: PRATT & WHITNEY CANADA CORP.

    Inventor： Jean-Jacques FOREST ,  Martin POULIN

    IPC: F02C7/36 ,  F02C7/268 ,  F02C3/10

    CPC classification number: F02C7/36 ,  F02C3/10 ,  F02C7/268 ,  F02C7/32 ,  F05D2220/323 ,  F05D2260/40 ,  F05D2260/85

    Abstract: A gas turbine engine has a LP spool including an LP shaft and a HP spool including an HP shaft, an accessory gear box (AGB) drivingly engaged to a plurality of accessories, an engine starter drivingly engaged to the AGB, and a drive shaft drivingly engaged to the AGB. In a first engine mode, the drive shaft is drivingly engaged to the HP shaft and is disengaged from the LP shaft, the engine starter is in driving engagement with the HP shaft via the drive shaft, and the LP shaft is disengaged from the AGB. In a second engine mode, the drive shaft is drivingly engaged to the LP shaft and is disengaged from the HP shaft, the LP shaft is in driving engagement with the AGB via the drive shaft, and the HP shaft is disengaged from the AGB.

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