System and method for monitoring thermal state to normalize engine trending data
    3.
    发明授权
    System and method for monitoring thermal state to normalize engine trending data 失效
    用于监测热态以规范发动机趋势数据的系统和方法

    公开(公告)号:US06498978B2

    公开(公告)日:2002-12-24

    申请号:US09861337

    申请日:2001-05-18

    IPC分类号: G06F1700

    CPC分类号: F02C9/28 F05D2220/50

    摘要: A method and system for monitoring engine performance in a gas turbine engine uses a plurality of sensors to sense data related to the operation and performance of the gas turbine engine. Selected data parameters from the sensed data are continuously sampled prior to completion of an engine start sequence. The selected data parameters are then evaluated to determine whether specific criteria have been met, and evaluation data are captured whenever the criteria are met. The evaluation data are used to normalize engine performance data to a particular thermal state of the engine. The normalized engine performance data are then trended by comparing it to a parametric baseline for the gas turbine engine.

    摘要翻译: 用于监测燃气涡轮发动机的发动机性能的方法和系统使用多个传感器来感测与燃气涡轮发动机的操作和性能有关的数据。 在完成发动机起动序列之前,来自感测数据的所选数据参数被连续采样。 然后评估所选择的数据参数以确定是否满足特定标准,并且每当满足标准时捕获评估数据。 评估数据用于将发动机性能数据归一化到发动机的特定热状态。 然后通过将归一化的发动机性能数据与燃气涡轮发动机的参数基准进行比较来趋化。

    Compensating for blade tip clearance deterioration in active clearance control
    4.
    发明授权
    Compensating for blade tip clearance deterioration in active clearance control 有权
    补偿主动间隙控制中的叶片顶端间隙变差

    公开(公告)号:US07431557B2

    公开(公告)日:2008-10-07

    申请号:US11441258

    申请日:2006-05-25

    IPC分类号: G06F19/00

    摘要: A method to compensate for blade tip clearance deterioration between rotating blade tips and a surrounding shroud in an aircraft gas turbine engine includes determining one or more variables based on at least one or more moving averages of one or more engine operating parameters respectively averaged over a fixed number of operational engine flight cycles and adjusting a flow rate of thermal control air to counter the blade tip clearance deterioration based on the one or more variables. The engine operating parameters may include running number of engine cycles, takeoff and cruise exhaust gas temperature margins, a cruise turbine efficiency, takeoff and cruise maximum turbine speeds, a cruise fuel flow. Some or all of the variables may be differences between the moving averages and corresponding baselines of the engine operating parameters respectively or the variables may all be moving averages. The flow rate may be adjusted incrementally.

    摘要翻译: 用于补偿在飞行器燃气涡轮发动机中的旋转叶片尖端和周围护罩之间的叶片顶端间隙变差的方法包括基于一个或多个发动机工作参数的至少一个或多个移动平均值确定一个或多个变量, 操作发动机飞行循环的数量,并且基于一个或多个变量来调节热控制空气的流量以对抗叶片顶端间隙恶化。 发动机运行参数可以包括发动机循环的运行次数,起飞和巡航废气温度裕度,巡航涡轮机效率,起飞和巡航最大涡轮机速度,巡航燃料流量。 变量的一些或全部可能分别是发动机运行参数的移动平均值和相应基线之间的差异,或者变量都可以是移动平均线。 流量可以逐渐调整。

    Compensating for blade tip clearance deterioration in active clearance control
    5.
    发明申请
    Compensating for blade tip clearance deterioration in active clearance control 有权
    补偿主动间隙控制中的叶片顶端间隙变差

    公开(公告)号:US20070276578A1

    公开(公告)日:2007-11-29

    申请号:US11441258

    申请日:2006-05-25

    IPC分类号: G06F19/00

    摘要: A method to compensate for blade tip clearance deterioration between rotating blade tips and a surrounding shroud in an aircraft gas turbine engine includes determining one or more variables based on at least one or more moving averages of one or more engine operating parameters respectively averaged over a fixed number of operational engine flight cycles and adjusting a flow rate of thermal control air to counter the blade tip clearance deterioration based on the one or more variables. The engine operating parameters may include running number of engine cycles, takeoff and cruise exhaust gas temperature margins, a cruise turbine efficiency, takeoff and cruise maximum turbine speeds, a cruise fuel flow. Some or all of the variables may be differences between the moving averages and corresponding baselines of the engine operating parameters respectively or the variables may all be moving averages. The flow rate may be adjusted incrementally.

    摘要翻译: 用于补偿在飞行器燃气涡轮发动机中的旋转叶片尖端和周围护罩之间的叶片顶端间隙变差的方法包括基于一个或多个发动机工作参数的至少一个或多个移动平均值确定一个或多个变量, 操作发动机飞行循环的数量,并且基于一个或多个变量来调节热控制空气的流量以对抗叶片顶端间隙恶化。 发动机运行参数可以包括发动机循环的运行次数,起飞和巡航废气温度裕度,巡航涡轮机效率,起飞和巡航最大涡轮机速度,巡航燃料流量。 变量的一些或全部可能分别是发动机运行参数的移动平均值和相应基线之间的差异,或者变量都可以是移动平均线。 流量可以逐渐调整。