Geared turbofan bearing arrangement

    公开(公告)号:US09938898B2

    公开(公告)日:2018-04-10

    申请号:US13193790

    申请日:2011-07-29

    IPC分类号: F02C1/00 F02C7/06 F01D25/16

    摘要: A geared turbofan gas turbine engine includes a fan section and a core section. The core section includes a compressor section, a combustor section and a turbine section. The fan section includes a gearbox and a fan. A low spool includes a low turbine within the turbine section and a forward connection to a gearbox for driving the fan. The low spool is supported for rotation about the axis at a forward most position by a forward roller bearing and at an aft position by a thrust bearing.

    Accessory gearbox buffer cooling air pump system
    7.
    发明授权
    Accessory gearbox buffer cooling air pump system 有权
    附件齿轮箱缓冲冷却空气泵系统

    公开(公告)号:US08967944B2

    公开(公告)日:2015-03-03

    申请号:US13219913

    申请日:2011-08-29

    摘要: A buffer air pump provides pressurized cooling air for cooling components of the gas turbine engine. The buffer air pump is supported on and/or within an accessory gearbox and draws bypass air in through an inlet manifold. An impeller supported within a scroll housing pressurizes the incoming bypass air and directs the pressurized air through passages to a component requiring cooling. The buffer air pump draws in relatively cool air from the bypass flow, pressurizes the air with the impeller and sends the air through conduits and passages within the gas turbine engine to the component that requires cooling such as a bearing assembly.

    摘要翻译: 缓冲空气泵为燃气涡轮发动机的冷却部件提供加压冷却空气。 缓冲空气泵支撑在附件齿轮箱上和/或内部,并通过入口歧管抽吸旁路空气。 支撑在涡旋壳体内的叶轮对进入的旁路空气加压并将加压空气通过通道引导到需要冷却的部件。 缓冲空气泵从旁路流入相对较冷的空气,用叶轮对空气加压,并将空气通过燃气涡轮发动机内的管道和通道送到需要冷却的部件,例如轴承组件。

    Gas turbine engine generator switchable drive
    10.
    发明授权
    Gas turbine engine generator switchable drive 有权
    燃气轮机发电机可切换驱动

    公开(公告)号:US08943839B2

    公开(公告)日:2015-02-03

    申请号:US13218863

    申请日:2011-08-26

    IPC分类号: F02C7/26 F02C7/32 F02C7/275

    摘要: A gas turbine engine includes a first spool, a first gear system connected to and driven by the first spool, a second spool, and a second gear system connected to and driven by the second spool. A first starter-generator has a first shaft with a switchable coupling connected to the first shaft. The switchable coupling selectively couples the first starter-generator to the first gear system when the switchable coupling is in a first position and selectively couples the first starter-generator to the second gear system when the switchable coupling is in a second position.

    摘要翻译: 燃气涡轮发动机包括第一阀芯,与第一阀芯连接并由第一阀芯驱动的第一齿轮系,第二阀芯和连接到第二阀芯并由第二阀芯驱动的第二齿轮系。 第一起动发电机具有第一轴,其具有连接到第一轴的可切换联轴器。 当可切换联轴器处于第一位置时,可切换联接器将第一起动发电机选择性地联接到第一齿轮系统,并且当可切换联轴器处于第二位置时,可选择性地将第一起动器发电机耦合到第二齿轮系统。