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    Loading parameters
    1.
    发明授权
    Loading parameters 有权

    公开(公告)号：US12123362B2

    公开(公告)日：2024-10-22

    申请号：US18225427

    申请日：2023-07-24

    Applicant: ROLLS-ROYCE plc

    Inventor： Peter Swann ,  Christopher P Madden ,  Craig W Bemment

    IPC: F02C9/40 ,  F02C9/28 ,  F23R3/34

    CPC classification number: F02C9/40 ,  F02C9/28 ,  F23R3/343 ,  F05D2220/323 ,  F05D2270/08 ,  F05D2270/306 ,  F05D2270/31 ,  F05D2270/71

    Abstract: An aircraft has first and second fuel sources containing fuels with different characteristics, and one or more gas turbine engines powered by the fuels and each having a staged combustion system having pilot and main fuel injectors and being operable in pilot-only and pilot-and-main ranges of operation. The gas turbine engines each have a fuel delivery regulator arranged to control fuel delivery to the pilot and main fuel injectors. The method includes: obtaining a proposed mission description; obtaining nvPM impact parameters for the gas turbine engines, the impact parameters being associated with each operating condition of the proposed mission; calculating an optimised set of one or more fuel characteristics for each flight condition of the proposed flight defined in the flight description based on the nvPM impact parameters; and determining a fuel allocation based on the optimised set of one or more fuel characteristics.

    ENHANCED ENGINE MODEL FOR CONTROL AND HEALTH MONITORING
    4.
    发明公开
    ENHANCED ENGINE MODEL FOR CONTROL AND HEALTH MONITORING 审中-公开

    公开(公告)号：US20240229724A1

    公开(公告)日：2024-07-11

    申请号：US18151939

    申请日：2023-01-09

    Applicant: Raytheon Technologies Corporation

    Inventor： Liang Tang ,  Danbing Seto

    IPC: F02C9/00

    CPC classification number: F02C9/00 ,  F05D2260/80 ,  F05D2270/71 ,  F05D2270/802

    Abstract: An engine model calibration system includes a gas turbine engine, a sensor, a nominal engine estimation module for FD&I, and a self-tuning engine estimation module for engine parameter estimation. The nominal engine estimation module includes an open-loop nominal engine model configured to output estimated nominal engine parameters indicative of the one or more engine operating parameters, and selectively updates the open-loop nominal engine model based on one or more identified engine operating conditions. The engine model calibration system can perform calibration of a nominal engine model and a self-tuning engine model as they are used for FD&I and engine parameter estimation. The self-calibrating dynamic model also can separate the long-term tuning parameters and the short-term tuning parameters from one another so that the self-tuning capability for the self-tuning engine model is not compromised or diminished as the engine deteriorates.

    Adaptive filtering method
    7.
    发明授权
    Adaptive filtering method 有权

    公开(公告)号：US11867128B2

    公开(公告)日：2024-01-09

    申请号：US16959835

    申请日：2019-01-04

    Applicant: SAFRAN AIRCRAFT ENGINES

    Inventor： Cedrik Djelassi

    IPC: F02C9/00 ,  H03H21/00

    CPC classification number: F02C9/00 ,  H03H21/0025 ,  F05D2270/122 ,  F05D2270/304 ,  F05D2270/71

    Abstract: The invention relates to a method for filtering an input signal (3b, 4b, 5b) relative to a physical variable of a turbine engine (9), the input signal being digitised, the method implementing frequency filtering of said signal in a computer (6) of a control system (7) of said turbine engine (9), said signal being provided at the input of the computer, a digital derivative of said signal being intended for being used by the control system (7), characterised in that it involves: —detecting an amplitude variation of said variable on said input signal, by a step of generating a second derivative signal (S) of the input signal and a step of comparing a value of the second derivative value of the input signal with at least one predetermined threshold (S1 . . . Sn); and —adapting the frequency filtering of said input signal as a function of the detected amplitude variation of said variable, by a step of controlling a controlled filter (PB11) capable of applying frequency filtering to the input signal, so that the controlled filter applies or does not apply the frequency filtering as a function of a result of the comparison step.

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