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    • 3. 发明申请
    • GAS TURBINE ENGINE WITH IMPROVED FUEL EFFICIENCY
    • 具有改进燃油效率的燃气涡轮发动机
    • US20120124964A1
    • 2012-05-24
    • US13361987
    • 2012-01-31
    • Karl L. HaselPeter G. SmithStuart S. Ochs
    • Karl L. HaselPeter G. SmithStuart S. Ochs
    • F02K3/02
    • F01D17/162F04D29/563F05D2220/36
    • A turbofan engine includes a fan driven by a low pressure turbine through a gear reduction. The gear reduction has a gear ratio of greater than or equal to about 2.4. The low pressure turbine has an expansion ratio greater than or equal to about 5. The fan has a bypass ratio greater than or equal to about 8. In other features, a turbofan engine includes a variable geometry fan exit guide vane (FEGV) system having a multiple of circumferentially spaced radially extending fan exit guide vanes. Rotation of the fan exit guide vanes between a nominal position and a rotated position selectively changes a fan bypass flow path to permit efficient operation at various flight conditions.
    • 涡轮风扇发动机包括由低压涡轮机通过齿轮减速器驱动的风扇。 齿轮减速器具有大于或等于约2.4的齿轮比。 低压涡轮机具有大于或等于约5的膨胀比。风扇具有大于或等于约8的旁通比。在其它特征中,涡轮风扇发动机包括可变几何风扇出口导叶(FEGV)系统,其具有 周向间隔开的径向延伸的风扇出口导叶的多个。 风扇出口导向叶片在标称位置和旋转位置之间的旋转选择性地改变风扇旁路流动路径以允许在各种飞行条件下的有效操作。
    • 5. 发明授权
    • Active flow control for nacelle inlet
    • 机舱入口的主动流量控制
    • US09157368B2
    • 2015-10-13
    • US11850300
    • 2007-09-05
    • Wayne HurwitzStuart S. Ochs
    • Wayne HurwitzStuart S. Ochs
    • F02C7/057B64D33/02F01D17/02
    • F02C7/057B64D33/02B64D2033/0226B64D2033/0286F01D17/02F05D2270/301F05D2270/44F05D2270/62
    • The disclosed turbine engine includes a fan nacelle surrounding a fan and including an inlet arranged upstream from the fan. The inlet includes an inlet surface having a boundary layer flow. A flow control actuator is in fluid communication with the inlet surface. A boundary layer sensing device is associated with the inlet surface for detecting a boundary layer condition at the inlet surface. A controller is in communication with the flow control actuator and the boundary layer sensing device. The controller is programmed to command the flow control actuator in response to the boundary layer sensing device detecting an undesired boundary layer condition. In this manner, the flow control actuator generates a desired boundary layer condition.
    • 所公开的涡轮发动机包括围绕风扇并包括布置在风扇上游的入口的风扇机舱。 入口包括具有边界层流的入口表面。 流量控制致动器与入口表面流体连通。 边界层感测装置与入口表面相关联,用于检测入口表面处的边界层状态。 控制器与流量控制致动器和边界层感测装置通信。 控制器被编程为响应于边界层感测装置检测不期望的边界层条件来命令流量控制致动器。 以这种方式,流量控制致动器产生期望的边界层条件。
    • 8. 发明申请
    • ACTIVE FLOW CONTROL FOR NACELLE INLET
    • 主动流量控制为NACELLE进口
    • US20090060704A1
    • 2009-03-05
    • US11850300
    • 2007-09-05
    • Wayne HurwitzStuart S. Ochs
    • Wayne HurwitzStuart S. Ochs
    • F02B27/02
    • F02C7/057B64D33/02B64D2033/0226B64D2033/0286F01D17/02F05D2270/301F05D2270/44F05D2270/62
    • The disclosed turbine engine includes a fan nacelle surrounding a fan and including an inlet arranged upstream from the fan. The inlet includes an inlet surface having a boundary layer flow. A flow control actuator is in fluid communication with the inlet surface. A boundary layer sensing device is associated with the inlet surface for detecting a boundary layer condition at the inlet surface. A controller is in communication with the flow control actuator and the boundary layer sensing device. The controller is programmed to command the flow control actuator in response to the boundary layer sensing device detecting an undesired boundary layer condition. In this manner, the flow control actuator generates a desired boundary layer condition.
    • 所公开的涡轮发动机包括围绕风扇并包括布置在风扇上游的入口的风扇机舱。 入口包括具有边界层流的入口表面。 流量控制致动器与入口表面流体连通。 边界层感测装置与入口表面相关联,用于检测入口表面处的边界层状态。 控制器与流量控制致动器和边界层感测装置通信。 控制器被编程为响应于边界层感测装置检测不期望的边界层条件来命令流量控制致动器。 以这种方式,流量控制致动器产生期望的边界层条件。