VARIABLE VANE DEVICES CONTAINING ROTATIONALLY-DRIVEN TRANSLATING VANE STRUCTURES AND METHODS FOR THE PRODUCTION THEREOF

    公开(公告)号:US20200049163A1

    公开(公告)日:2020-02-13

    申请号:US16656211

    申请日:2019-10-17

    Abstract: Variable vane devices containing rotationally-driven translating vane structures are provided, as are methods for fabricating variable vane devices. In one embodiment, the variable vane device includes a flow assembly having a centerline, an annular flow passage extending through the flow assembly, cam mechanisms, and rotationally-driven translating vane structures coupled to the flow assembly and rotatable relative thereto. The translating vane structures include vane bodies positioned within the annular flow passage and angularly spaced about the centerline. During operation of the variable vane device, the cam mechanisms adjust translational positions of the vane bodies within the annular flow passage in conjunction with rotation of the translating vane structures relative to the flow assembly. By virtue of the translational movement of the translating vane structures, a reduction in the clearances between the vane bodies and neighboring flow assembly surfaces can be realized to reduce end gap leakage and boost device performance.

    Grooved shroud casing treatment for high pressure compressor in a turbine engine

    公开(公告)号:US11098731B2

    公开(公告)日:2021-08-24

    申请号:US16732507

    申请日:2020-01-02

    Abstract: A compressor for a turbine engine includes a shroud having a grooved section including a plurality of groove segments extending radially into a shroud surface. A rotor assembly rotatably supported in the shroud includes a rotor hub and a plurality of rotor blades. Each rotor blade extends radially from the rotor hub and terminates at a blade tip, which is spaced from the shroud surface by a tip gap and defines a non-constant clearance region between a leading edge position and a medial chord position along the blade chord at the minimum tip clearance. The rotor blades generate an aft axial fluid flow through the shroud and the grooved section is formed in the shroud surface upstream of the medial chord positon within the non-constant clearance region for resisting a reverse axial fluid flow through the tip gap when the compressor section is operated at near stall conditions.

    Variable vane devices containing rotationally-driven translating vane structures and methods for the production thereof

    公开(公告)号:US11015614B2

    公开(公告)日:2021-05-25

    申请号:US16656211

    申请日:2019-10-17

    Abstract: Variable vane devices containing rotationally-driven translating vane structures are provided, as are methods for fabricating variable vane devices. In one embodiment, the variable vane device includes a flow assembly having a centerline, an annular flow passage extending through the flow assembly, cam mechanisms, and rotationally-driven translating vane structures coupled to the flow assembly and rotatable relative thereto. The translating vane structures include vane bodies positioned within the annular flow passage and angularly spaced about the centerline. During operation of the variable vane device, the cam mechanisms adjust translational positions of the vane bodies within the annular flow passage in conjunction with rotation of the translating vane structures relative to the flow assembly. By virtue of the translational movement of the translating vane structures, a reduction in the clearances between the vane bodies and neighboring flow assembly surfaces can be realized to reduce end gap leakage and boost device performance.

    VARIABLE STATOR VANE ASSEMBLIES AND VARIABLE STATOR VANES THEREOF HAVING A LOCALLY SWEPT LEADING EDGE AND METHODS FOR MINIMIZING ENDWALL LEAKAGE THEREWITH
    10.
    发明申请
    VARIABLE STATOR VANE ASSEMBLIES AND VARIABLE STATOR VANES THEREOF HAVING A LOCALLY SWEPT LEADING EDGE AND METHODS FOR MINIMIZING ENDWALL LEAKAGE THEREWITH 有权
    可变定位器组件及其具有局部切换导向边缘的可变定位器,以及用于最小化其末端泄漏的方法

    公开(公告)号:US20160076548A1

    公开(公告)日:2016-03-17

    申请号:US14485163

    申请日:2014-09-12

    Abstract: Variable stator vane assemblies and stator vanes thereof having a local swept leading edge are provided. The variable stator vane comprises an airfoil disposed between spaced apart inner and outer buttons centered about a rotational axis. The inner and outer buttons each have a button forward edge portion. The airfoil includes leading and trailing edges, pressure and suction sides, and a root and a tip. The leading edge includes a local forward sweep at the root, a local aft sweep at the tip, or both, thereby forming a locally swept leading edge thereat. The button forward edge portion of one or both of the inner and outer buttons is substantially coextensive with the locally swept leading edge. Methods are also provided for minimizing endwall leakage in the variable stator vane assembly using the same.

    Abstract translation: 提供具有局部扫掠前缘的可变定子叶片组件和定子叶片。 可变定子叶片包括设置在围绕旋转轴线居中的间隔开的内部和外部按钮之间的翼型件。 内按钮和外按钮均具有按钮前边缘部分。 机翼包括前缘和后缘,压力和吸力侧,以及根部和尖端。 前缘包括根部的局部向前扫掠,尖端处的局部后掠,或两者,从而在那里形成局部扫掠的前缘。 内按钮和外按钮中的一个或两个的按钮前边缘部分与局部扫掠的前缘基本上共同延伸。 还提供了使用其来减小可变定子叶片组件中的端壁泄漏的方法。

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