Turbofan gas turbine engine with variable fan outlet guide vanes
    6.
    发明授权
    Turbofan gas turbine engine with variable fan outlet guide vanes 有权
    具有可变风扇出口导叶的Turbofan燃气轮机

    公开(公告)号:US07730714B2

    公开(公告)日:2010-06-08

    申请号:US11290247

    申请日:2005-11-29

    IPC分类号: F02K3/02 F02K1/38

    摘要: A turbofan gas turbine engine includes a forward fan section with a row of fan rotor blades, a core engine, and a fan bypass duct downstream of the forward fan section and radially outwardly of the core engine. The forward fan section has only a single stage of variable fan guide vanes which are variable fan outlet guide vanes downstream of the forward fan rotor blades. An exemplary embodiment of the engine includes an afterburner downstream of the fan bypass duct between the core engine and an exhaust nozzle. The variable fan outlet guide vanes are operable to pivot from a nominal OGV position at take-off to an open OGV position at a high flight Mach Number which may be in a range of between about 2.5-4+. Struts extend radially across a radially inwardly curved portion of a flowpath of the engine between the forward fan section and the core engine.

    摘要翻译: 涡轮风扇燃气涡轮发动机包括具有一排风扇转子叶片的前风扇部分,核心发动机和在前风扇部分下游并且在核心发动机的径向外侧的风扇旁通管道。 前风扇部分仅具有一级的可变风扇导叶,它们是前风扇转子叶片下游的可变风扇出口导叶。 发动机的示例性实施例包括在核心发动机和排气喷嘴之间的风扇旁路管道的下游的补燃器。 可变的风扇出口导向叶片可操作以在起飞时的标称OGV位置以可能在大约2.5-4 +之间的高飞行马赫数位置转动到打开的OGV位置。 支杆沿着前风扇部分和核心发动机之间的发动机的流路的径向向内弯曲的部分径向延伸。