HEAT EXCHANGER FOR AN AIRCRAFT
    92.
    发明公开

    公开(公告)号:US20240287934A1

    公开(公告)日:2024-08-29

    申请号:US18659339

    申请日:2024-05-09

    CPC classification number: F02C7/14 F05D2220/323 F05D2260/213 F05D2260/606

    Abstract: A heat exchanger for an aircraft includes an inlet plenum housing defining an inlet plenum configured to receive a fluid and an outlet plenum housing defining an outlet plenum configured to discharge the fluid. Furthermore, the heat exchanger includes a core configured to heat or cool a first portion of the fluid, with the core defining a plurality of fluid passages extending from the inlet plenum to the outlet plenum. Moreover, the heat exchanger includes a passive bypass defining a passive bypass flow path fluidly coupled to and extending between the inlet plenum and the outlet plenum. As such, the passive bypass flow path is in parallel with at least a portion of the core such that a second portion of the fluid bypasses at least a portion of the core and flows continuously and unobstructed through the passive bypass flow path to the outlet plenum.

    VEHICLE AND PROPULSION SYSTEM WITH HYDROGEN FUEL SYSTEM

    公开(公告)号:US20240183312A1

    公开(公告)日:2024-06-06

    申请号:US18439834

    申请日:2024-02-13

    CPC classification number: F02C7/185 F02C6/08 F02C3/22

    Abstract: An aircraft propulsion system in includes a compressor section, a heat addition system, and an expansion section in serial flow arrangement, wherein the heat addition system is configured to receive a flow of gaseous fuel from a fuel system, and wherein the flow of gaseous fuel is provided to the heat addition system to generate combustion gases. A lubricant system is configured to provide a flow of lubricant through the propulsion system. A hydraulic system is configured to provide a flow of hydraulic fluid to an actuator at the propulsion system. A thermal management system is configured to provide a flow of fluid in thermal communication with the lubricant system and the hydraulic system. The thermal management system comprises a turbine configured to receive the flow of fluid via a fluid circuit extended in fluid communication from the compressor section.

    Gas turbine engine having a heat exchanger located in an annular duct

    公开(公告)号:US11927134B1

    公开(公告)日:2024-03-12

    申请号:US18160375

    申请日:2023-01-27

    Abstract: A gas turbine engine is provided, having a turbomachine and a rotor assembly driven by the turbomachine and operable at a first blade passing frequency (f1) greater than or equal to 2,500 hertz and less than or equal to 5,000 hertz during a high power operating condition; a heat exchanger positioned within an annular duct and extending substantially continuously along the circumferential direction, wherein an effective transmission loss (ETL) for the heat exchanger positioned within the annular duct is between 5 decibels and 1 decibels for a high power operating condition, and wherein the heat exchanger comprises a heat transfer section defining an acoustic length (Li), and wherein an Operational Acoustic Reduction Ratio (OARR) is greater than or equal to 0.75 to achieve the ETL at the high power operating condition, the OARR equal to:




    sin







    (



    2
    ×
    π
    ×

    f
    1



    a
    1


    ×

    L
    i


    )

    2







    wherein a1 is equal to 13,200 inches per second during the high power operating condition.

    Gas supply system
    97.
    发明授权

    公开(公告)号:US11879392B2

    公开(公告)日:2024-01-23

    申请号:US18148518

    申请日:2022-12-30

    CPC classification number: F02C7/22 F05D2220/323 F05D2240/35 F05D2260/213

    Abstract: A gas supply system is provided herein. The gas supply system includes a fuel oxygen reduction unit having a circuit defining a gas flowpath for a flow of a stripping gas. A reservoir is in selective fluid communication with the fuel oxygen reduction unit and is configured to store a portion of the stripping gas from the circuit. The reservoir is further configured to be in selective fluid communication with the fuel system component when installed in a vehicle to provide the stored portion of the stripping gas to the fuel system component in response to detection of a purge condition.

    SYSTEM AND METHOD OF DETECTING AN AIRFLOW FAULT CONDITION

    公开(公告)号:US20230090415A1

    公开(公告)日:2023-03-23

    申请号:US17483229

    申请日:2021-09-23

    Abstract: A method of detecting an airflow fault condition in a gas turbine engine, the method including: operating the gas turbine engine with a thermal transport bus having an intermediary heat exchange fluid flowing therethrough; determining a performance characteristic of the intermediary heat exchange fluid in the thermal transport bus is outside of a predetermined range, wherein the performance characteristic includes a temperature, a pressure, a flowrate, or a combination thereof; and indicating an airflow fault condition in response to determining the performance characteristic is outside of the predetermined range.

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