GAS TURBINE ENGINE VARIABLE AREA FAN NOZZLE WITH ICE MANAGEMENT

    公开(公告)号:US20170138303A1

    公开(公告)日:2017-05-18

    申请号:US15417358

    申请日:2017-01-27

    Abstract: A method of managing a gas turbine engine variable area fan nozzle includes the steps of operating a variable area fan nozzle according to a first operating schedule. An icing condition input is evaluated to determine the likelihood of ice presence. The first operating schedule is altered to provide a variable area fan nozzle position if ice is likely present or actually present to provide an icing operating schedule different than the first operating schedule. The first operating schedule corresponds to the flaps at least partially open at air speeds below a first airspeed. The altering step includes closing the flaps below the first airspeed as part of the icing operating schedule. The variable area fan nozzle position is adjusted according to the icing operating schedule. A fan is arranged in a fan nacelle that includes a flap configured to be movable between first and second positions. An actuator is operatively coupled to the flap.

    Gas turbine engine variable area fan nozzle with ice management

    公开(公告)号:US10578053B2

    公开(公告)日:2020-03-03

    申请号:US15417358

    申请日:2017-01-27

    Abstract: A method of managing a gas turbine engine variable area fan nozzle includes the steps of operating a variable area fan nozzle according to a first operating schedule. An icing condition input is evaluated to determine the likelihood of ice presence. The first operating schedule is altered to provide a variable area fan nozzle position if ice is likely present or actually present to provide an icing operating schedule different than the first operating schedule. The first operating schedule corresponds to the flaps at least partially open at air speeds below a first airspeed. The altering step includes closing the flaps below the first airspeed as part of the icing operating schedule. The variable area fan nozzle position is adjusted according to the icing operating schedule. A fan is arranged in a fan nacelle that includes a flap configured to be movable between first and second positions. An actuator is operatively coupled to the flap.

    GAS TURBINE ENGINE VARIABLE AREA FAN NOZZLE CONTROL
    7.
    发明申请
    GAS TURBINE ENGINE VARIABLE AREA FAN NOZZLE CONTROL 审中-公开
    气体涡轮发动机可变区域风扇喷嘴控制

    公开(公告)号:US20150315976A1

    公开(公告)日:2015-11-05

    申请号:US14502354

    申请日:2014-09-30

    Abstract: A method of managing a gas turbine engine includes the steps of detecting an airspeed and detecting a fan speed. A parameter relationship is referenced related to a desired variable area fan nozzle position based upon at least airspeed and fan speed. The detected airspeed and detected fan speed is compared to the parameter relationship to determine a target variable area fan nozzle position. An actual variable area fan nozzle position is adjusted in response to the determination of the target area fan nozzle position and at least one threshold.

    Abstract translation: 管理燃气涡轮发动机的方法包括检测空速并检测风扇速度的步骤。 基于至少空速和风扇速度来参考与期望的可变区域风扇喷嘴位置相关的参数关系。 将检测到的空速和检测到的风扇速度与参数关系进行比较,以确定目标可变区域风扇喷嘴位置。 响应于目标区域风扇喷嘴位置和至少一个阈值的确定来调整实际的可变区域风扇喷嘴位置。

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