THRUST BALANCE CONTROL WITH DIFFERENTIAL POWER EXTRACTION

    公开(公告)号:US20200095941A1

    公开(公告)日:2020-03-26

    申请号:US16141382

    申请日:2018-09-25

    Inventor: Gary D. Roberge

    Abstract: A gas turbine engine according to an exemplary embodiment of this disclosure includes, among other possible things, a first spool including a first compressor coupled to a first turbine through a first shaft; a second spool including a second compressor coupled to a second turbine through a second shaft; a first tower shaft coupled to the first shaft through a first gear assembly; a second tower shaft couple to the second shaft through a second gear assembly; and a first load generating device driven by the first tower shaft, wherein the first load generating device generates a first load on the first spool through the first tower shaft; a second load generating device driven by the second tower shaft, wherein the second load generating device generates a second load on the second spool through the second tower shaft and the first load and the second load combine to apply a total load on the first spool and the second spool; and a controller controlling each of the first load generating device and the second load generating device to vary a proportion of the total load applied to each of the first spool and the second spool to bias a direction of an axial load on each of the first spool and the second spool.

    HYBRID EXPANDER CYCLE WITH INTERCOOLING AND TURBO-GENERATOR

    公开(公告)号:US20200088102A1

    公开(公告)日:2020-03-19

    申请号:US16131706

    申请日:2018-09-14

    Inventor: Gary D. Roberge

    Abstract: A gas turbine engine system includes a gas turbine engine and a fuel turbine system. The gas turbine engine includes a heat exchange system configured to transfer thermal energy from a first compressed air flow and an exhaust gas flow to a fuel to produce a gaseous fuel. The fuel turbine system includes a fuel turbine fluidly coupled to the heat exchange system and a combustor of the gas turbine engine, and a fuel pump fluidly coupled to the heat exchange system and configured to be driven by the fuel turbine. The fuel turbine is configured to extract energy from expansion of the gaseous fuel to produce the gaseous fuel at a lower pressure for delivery to the combustor.

    HYBRID EXPANDER CYCLE WITH PRE-COMPRESSION COOLING AND TURBO-GENERATOR

    公开(公告)号:US20200088098A1

    公开(公告)日:2020-03-19

    申请号:US16131712

    申请日:2018-09-14

    Inventor: Gary D. Roberge

    Abstract: A gas turbine engine system includes a gas turbine engine and a fuel turbine system. The gas turbine engine includes an air inlet, compressor, combustor, turbine, and heat exchange system. The heat exchange system is configured to transfer thermal energy from an inlet air flow or exhaust air flow to a fuel to produce a gaseous fuel that is used to drive a fuel turbine and fuel pump and used for combustion in the gas turbine engine. The fuel turbine is in fluid communication with the heat exchange system and the combustor and configured to extract energy from expansion of the gaseous fuel. The fuel pump is configured to be driven by the fuel turbine and is in fluid communication with the heat exchanger system.

    AIRFOIL DEICING SYSTEM
    16.
    发明申请

    公开(公告)号:US20200063600A1

    公开(公告)日:2020-02-27

    申请号:US16111739

    申请日:2018-08-24

    Inventor: Gary D. Roberge

    Abstract: A gas turbine engine includes an airfoil and a deicing system. The airfoil radially extends from a hub towards a case disposed about a central longitudinal axis of the gas turbine engine. The deicing system includes an acoustic driver assembly arranged to apply acoustic energy to the airfoil to excite a predetermined vibratory mode of the airfoil.

    GAS TURBINE ENGINE GEARED ARCHITECTURE
    19.
    发明申请

    公开(公告)号:US20190153959A1

    公开(公告)日:2019-05-23

    申请号:US16178959

    申请日:2018-11-02

    Inventor: Gary D. Roberge

    Abstract: A gas turbine engine assembly according to an exemplary aspect of the present disclosure includes, among other things, a geared architecture configured to rotatably couple a turbine and a compressor of an engine to rotate the compressor at a different speed than the turbine and a fan. A method of adjusting rotational speeds within a gas turbine engine is also disclosed.

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