PROPULSION SYSTEM COMPRISING A HYDROGEN-BURNING GAS TURBINE ENGINE

    公开(公告)号:US20250154902A1

    公开(公告)日:2025-05-15

    申请号:US18916983

    申请日:2024-10-16

    Abstract: A propulsion system comprises a propulsive hydrogen-burning gas turbine engine, a first tank storing liquid hydrogen with an ullage and a first fuel line including a fuel pump and a vaporiser, the first fuel line providing gaseous hydrogen to the engine during operation of the system. A second tank storing gaseous hydrogen is coupled by a second fuel line to the first fuel line at a position thereon between the vaporiser and the engine, providing for engine start-up (when the vaporiser is inoperative) and power-boosting during operation of the system. A duct connects gaseous hydrogen within the second tank to the ullage in the first tank in order maintain pressure in the first tank as liquid hydrogen within it is depleted, preventing cavitation of liquid hydrogen within the fuel pump.

    GAS TURBINE ENGINE
    12.
    发明申请
    GAS TURBINE ENGINE 审中-公开

    公开(公告)号:US20200291866A1

    公开(公告)日:2020-09-17

    申请号:US16401225

    申请日:2019-05-02

    Abstract: A gas turbine engine comprising: a compressor; a first turbine; and a first compressor bleed valve in fluid communication with the compressor and configured to release bleed air from the compressor; wherein the first compressor bleed valve is configured to release bleed air to a downstream location in the engine, the downstream location being downstream of the first turbine; wherein the first compressor bleed valve is configured to open wherein the first compressor bleed valve is configured to open to at least two positions, to thereby release a variable amount of bleed air from the compressor.

    FAIRINGS FOR POWER GENERATION MACHINES
    13.
    发明申请

    公开(公告)号:US20190178106A1

    公开(公告)日:2019-06-13

    申请号:US16197557

    申请日:2018-11-21

    Abstract: A fairing for a power generation machine, the fairing comprising: a first layer comprising a metallic material and defining a first surface and a second opposite surface, the first layer being configured to enable the fairing to be coupled to the power generation machine; and a second layer comprising a composite material and defining a first surface and a second opposite surface, the second layer being coupled to the first layer, the second surface of the second layer defining an external surface of the fairing.

    GAS TURBINE ENGINE BLEED DUCT
    18.
    发明申请

    公开(公告)号:US20200290741A1

    公开(公告)日:2020-09-17

    申请号:US16401220

    申请日:2019-05-02

    Abstract: A single-piece gas turbine engine bleed duct for a gas turbine engine including: a main airflow conduit configured to transmit a bleed flow to a location outside the gas turbine engine; a pressure regulating valve for regulating airflow through the main airflow conduit; a first inlet duct for directing airflow to the main airflow conduit and toward the pressure regulating valve, the first inlet duct including a non-return valve; and a second inlet duct for directing airflow to the main airflow conduit and toward the pressure regulating valve, the second inlet duct including a control valve; wherein each of the first and second inlet ducts are directly connectable to an engine casing of a gas turbine engine.

    COOLING
    19.
    发明申请
    COOLING 审中-公开

    公开(公告)号:US20200010208A1

    公开(公告)日:2020-01-09

    申请号:US16437263

    申请日:2019-06-11

    Abstract: An electric propulsion unit (102) for an aircraft is shown. A fan (202) produces a pressured airflow (P) by raising the pressure of an incident airflow (I). An electric machine (201) is arranged to drive the fan and is located within a casing (204). A primary cooling circuit (205) is located within the casing, and includes the electric machine and a first pass of a fluid-fluid heat exchanger (208), thereby placing the electric machine and the fluid-fluid heat exchanger in thermal communication. A secondary cooling circuit includes a second pass of the fluid-fluid heat exchanger and an air-fluid heat exchanger (210) located within the pressurised airflow produced by the fan, thereby placing the fluid-fluid heat exchanger and the air-fluid heat exchanger in thermal communication.

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