Active film cooling for turbine blades
    2.
    发明授权
    Active film cooling for turbine blades 有权
    涡轮叶片的主动薄膜冷却

    公开(公告)号:US09200522B2

    公开(公告)日:2015-12-01

    申请号:US12747112

    申请日:2008-12-15

    申请人: Subrata Roy

    发明人: Subrata Roy

    IPC分类号: F01D5/18

    摘要: A cooling system includes a surface comprising a plurality of orifices and a flow control plasma actuator positioned proximate an orifice to induce cooling air attachment to the surface. In an exemplary embodiment, the plasma actuator includes a power source, a first electrode in contact with a first dielectric layer and connected to the power source, a second electrode in contact with a second dielectric layer and connected to the power source, and a ground electrode. The power source drives the first electrode with a first ac voltage pattern and drives the second electrode with a second ac voltage pattern. The first voltage pattern and the second voltage pattern have a phase difference. In further embodiments, a dc voltage can be used to drive one or more of the electrodes, where the dc voltage can be pulsed in specific embodiments. In another embodiment, a cooling system includes a suction mechanism positioned proximate an orifice to induce cooling air attachment to the surface, the section mechanism being positioned downstream of the orifice.

    摘要翻译: 冷却系统包括包括多个孔口的表面和靠近孔口定位的流动控制等离子体致动器,以引起冷却空气附着到表面。 在示例性实施例中,等离子体致动器包括电源,与第一电介质层接触并连接到电源的第一电极,与第二电介质层接触并连接到电源的第二电极和接地 电极。 电源以第一交流电压模式驱动第一电极,并用第二交流电压模式驱动第二电极。 第一电压图案和第二电压图案具有相位差。 在另外的实施例中,可以使用直流电压来驱动一个或多个电极,其中在特定实施例中直流电压可以被脉冲。 在另一个实施例中,冷却系统包括一个位于孔口附近的抽吸机构,以引导冷却空气附着到该表面,该部分机构位于孔口的下游。

    GAS TURBINE SYSTEM HAVING A PLASMA ACTUATOR FLOW CONTROL ARRANGEMENT
    4.
    发明申请
    GAS TURBINE SYSTEM HAVING A PLASMA ACTUATOR FLOW CONTROL ARRANGEMENT 审中-公开
    具有等离子体执行器流量控制装置的气体涡轮机系统

    公开(公告)号:US20130312385A1

    公开(公告)日:2013-11-28

    申请号:US13480120

    申请日:2012-05-24

    IPC分类号: F23R3/26 F02K3/00

    摘要: A gas turbine system having a plasma actuator flow control arrangement including a compressor section for compressing an airstream, wherein the compressor section includes at least one inlet guide vane for controlling the airstream proximate an inlet portion of the compressor section. Also included is a turbine inlet assembly for ingesting the airstream to be routed to the compressor section. Further included is a plasma actuator disposed within at least one of the inlet portion of the compressor section and the turbine inlet assembly for controllably producing an electric field to manipulate a portion of the airstream.

    摘要翻译: 一种具有等离子体致动器流量控制装置的燃气涡轮机系统,其包括用于压缩空气流的压缩机部分,其中所述压缩机部分包括用于控制靠近所述压缩机部分的入口部分的所述气流的至少一个入口引导叶片。 还包括用于摄取要路由到压缩机部分的气流的涡轮机入口组件。 进一步包括设置在压缩机部分的入口部分和涡轮机入口组件中的至少一个中的等离子体致动器,用于可控地产生电场以操纵气流的一部分。

    Wingless hovering of micro air vehicle
    5.
    发明授权
    Wingless hovering of micro air vehicle 有权
    微型飞行器的无翼悬停

    公开(公告)号:US08382029B2

    公开(公告)日:2013-02-26

    申请号:US12342583

    申请日:2008-12-23

    申请人: Subrata Roy

    发明人: Subrata Roy

    IPC分类号: B64C39/00

    摘要: Embodiments relate to a Wingless Hovering Micro Air Vehicle and its Power Source Unit. Embodiments can operate at reasonable power levels for hovering and withstanding expected wind gusts. Embodiments can have a diameter less than 15 cm. Embodiments can have one or more smooth (continuous curvature) surface and can be operated using electromagnetic and electrohydrodynamic principles. The wingless design of specific embodiments can allow operation with no rotating or moving components. Additional embodiments can allow active response to the surrounding flow conditions. The issue of low lift to drag ratio and degradation of airfoil efficiency due to the inability of laminar boundary layers attachment can also be significantly reduced, or eliminated. The electromagnetic force can be generated by applying a pulsed (alternating/rf) voltage between a set of grounded and powered electrodes separated by a polymer insulator, dielectric, or other material with insulating properties.

    摘要翻译: 实施例涉及无翼悬停微型飞行器及其电源单元。 实施例可以以合理的功率水平进行操作,用于盘旋和耐受预期的阵风。 实施例可以具有小于15cm的直径。 实施例可以具有一个或多个平滑(连续曲率)表面,并且可以使用电磁和电动力学原理进行操作。 特定实施例的无翼设计可以允许在没有旋转或移动部件的情况下进行操作。 另外的实施例可以允许对周围流动条件的主动响应。 也可以显着地减少或消除由于层流边界层附着不能导致的低提升阻力比和翼型效率降低的问题。 电磁力可以通过在由聚合物绝缘体,电介质或具有绝缘性质的其它材料隔开的一组接地和供电电极之间施加脉冲(交替/ rf)电压来产生。

    Method and apparatus for multibarrier plasma actuated high performance flow control
    7.
    发明授权
    Method and apparatus for multibarrier plasma actuated high performance flow control 有权
    用于多功能等离子体驱动的高性能流量控制的方法和装置

    公开(公告)号:US08235072B2

    公开(公告)日:2012-08-07

    申请号:US12598993

    申请日:2008-05-08

    申请人: Subrata Roy

    发明人: Subrata Roy

    IPC分类号: F15C1/04

    摘要: A plasma actuator incorporates a power source, a first electrode in contact with a first dielectric layer, a second electrode in contact with a second dielectric layer, and a ground electrode. The power source drives the first electrode with a first ac voltage pattern with respect to the ground electrode to produce a first plasma discharge, and a first electric field pattern in the flow region, and drives the second electrode with a second ac voltage pattern with respect to the ground electrode to produce a second plasma discharge in the flow region and a second electric field pattern in the flow region. The first and second electrodes are offset along the direction of flow and the first voltage pattern and the second voltage pattern have a phase difference such that the first and second electric fields drive flow in different portions of the flow region at different times.

    摘要翻译: 等离子体致动器包括电源,与第一介电层接触的第一电极,与第二电介质层接触的第二电极和接地电极。 电源以相对于接地电极的第一交流电压模式驱动第一电极,以产生第一等离子体放电,以及流动区域中的第一电场图案,并且以相对于第二电压模式的第二交流电压模式驱动第二电极 到接地电极以在流动区域中产生第二等离子体放电,并且在流动区域中产生第二电场图案。 第一电极和第二电极沿着流动方向偏移,并且第一电压图案和第二电压图案具有相位差,使得第一和第二电场在不同时间驱动流动区域的不同部分中的流动。

    SYSTEM AND METHOD OF COMBUSTION FOR SUSTAINING A CONTINUOUS DETONATION WAVE WITH TRANSIENT PLASMA
    9.
    发明申请
    SYSTEM AND METHOD OF COMBUSTION FOR SUSTAINING A CONTINUOUS DETONATION WAVE WITH TRANSIENT PLASMA 有权
    用于持续瞬态等离子体连续爆震波的燃烧系统和方法

    公开(公告)号:US20120151898A1

    公开(公告)日:2012-06-21

    申请号:US13392149

    申请日:2009-12-18

    申请人: Scott Claflin

    发明人: Scott Claflin

    IPC分类号: F02K7/075 F02K7/02

    摘要: An annular combustion (22) chamber and a transient plasma system (42) in communication with the annular combustion chamber (22) to sustain a spinning detonation wave. This system (42) is also called as “nanosecond pulsed plasma” system and a pulse generator (48) operates to generate by energy but intense high voltage pulses to provide tansient plasma (p); increasing the reactivity of the chemical species of the popelllants. The propulsion relies on constant pressure combustion (CDWE).

    摘要翻译: 与环形燃烧室(22)连通的环形燃烧室(22)和瞬态等离子体系统(42),以维持旋转爆震波。 该系统(42)也称为“纳秒脉冲等离子体”系统,脉冲发生器(48)通过能量而产生强烈的高电压脉冲以提供令人感觉的等离子体(p); 增加了大众化学品种的反应性。 推进力依赖于恒压燃烧(CDWE)。

    Apparatus and method for controlling a compressor
    10.
    发明授权
    Apparatus and method for controlling a compressor 有权
    用于控制压缩机的装置和方法

    公开(公告)号:US08096756B2

    公开(公告)日:2012-01-17

    申请号:US12261151

    申请日:2008-10-30

    申请人: Huu Duc Vo

    发明人: Huu Duc Vo

    IPC分类号: F01D11/08 F01D5/20

    摘要: A compressor comprises a casing having an inner surface surrounding a rotor assembly, the rotor assembly having a plurality of circumferentially spaced radially outwardly extending rotor blades, each blade having leading and trailing edges and a tip, the compressor further comprising at least one plasma actuator for suppressing rotating stall inception of the compressor, the at least one plasma actuator being mounted adjacent to the blade tips.

    摘要翻译: 压缩机包括壳体,其具有包围转子组件的内表面,转子组件具有多个周向间隔开的径向向外延伸的转子叶片,每个叶片具有前缘和后缘以及尖端,压缩机还包括至少一个等离子体致动器, 抑制压缩机的旋转失速开始,至少一个等离子体致动器被安装成与叶片尖端相邻。