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    • 4. 发明申请
    • A TIP CAP FOR A FAN BLADE
    • 风扇叶片的提示
    • WO2015015207A1
    • 2015-02-05
    • PCT/GB2014/052342
    • 2014-07-30
    • COMPOSITE TECHNOLOGY AND APPLICATIONS LIMITED
    • GRAINGER, Philip Stanley
    • F01D5/20F01D5/16F01D25/06
    • F01D5/20F01D5/16F01D25/06F05D2230/30F05D2260/96Y02T50/672Y02T50/673
    • A tip cap (22), (32), (44), (52), (62), (70) for a fan blade (8) of a gas turbine engine comprises: a tip portion (24); and an insert portion (26), (34), (46), (54), (64), (72) arranged to be received in a recess (20) of an aerofoil (10) of a fan blade (8), wherein the insert portion comprises regions of different density. An alternative fan blade 8 for a gas turbine engine comprises: an aerofoil (10) having a tip recess (20) for receiving an insert portion of a tip cap; a tip cap (22), (32), (44), (52), (62), (70) having a tip portion (24) and an insert portion (26), ((34), 46), (54), (64), (72), the insert portion having at least one cut-out (28), (36), (38), (48), (80); wherein the insert portion of the tip cap is disposed within the tip recess of the aerofoil, and wherein a void is defined by the cut-out within the recess.
    • 用于燃气涡轮发动机的风扇叶片(8)的顶盖(22),(32),(44),(52),(62),(70)包括:尖端部分(24) 以及布置成被容纳在风扇叶片(8)的机翼(10)的凹部(20)中的插入部分(26),(34),(46),(54),(64) ,其中所述插入部分包括不同密度的区域。 用于燃气涡轮发动机的替代风扇叶片8包括:机翼(10),其具有用于接收尖端盖的插入部分的末端凹部(20) 具有尖端部分(24)和插入部分(26)的尖端帽(22),(32),(44),(52),(62),(70),((34),46) (64),(72),插入部分具有至少一个切口(28),(36),(38),(48),(80) 其中所述顶盖的插入部分设置在所述机翼的末端凹部内,并且其中,所述凹部内的所述切口限定空隙。
    • 8. 发明申请
    • RECONFIGURABLE SWITCHED MODE CONVERTER
    • 可重新切换模式转换器
    • WO2016166356A1
    • 2016-10-20
    • PCT/EP2016/058470
    • 2016-04-16
    • CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LIMITED
    • KING, Eric J.MARU, SiddharthMELANSON, John L.
    • H03F1/02
    • H02M3/158H02M1/44H02M2003/1566H03F1/0227
    • A switching power stage for producing an output voltage to a load may include a configurable switched mode power converter and a controller. The power converter may include a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, and an output for producing the output voltage, the output comprising a first output terminal and a second output terminal. The controller may be configured to, for at least one range of magnitudes of the output voltage, control the plurality of switches to operate in at least three switching phases per switching cycle of the power converter in order to generate the output voltage, wherein switching cycles of the power converter are substantially approximately equal in period and control the plurality of switches to apply for each of the at least three switching phases a respective switch configuration of the plurality of switch configurations.
    • 用于产生负载的输出电压的开关功率级可以包括可配置开关模式功率转换器和控制器。 功率转换器可以包括功率电感器,多个开关,被布置为依次操作多个开关配置,以及用于产生输出电压的输出,该输出包括第一输出端子和第二输出端子。 控制器可以被配置为,对于输出电压的大小的至少一个范围,控制多个开关以在功率转换器的每个开关周期的至少三个开关阶段中工作,以便产生输出电压,其中开关周期 功率转换器的周期基本上近似相等,并且控制多个开关以向至少三个开关阶段中的每一个应用多个开关配置的相应开关配置。
    • 10. 发明申请
    • A TORSIONAL VIBRATION DAMPER
    • 扭转振动阻尼器
    • WO2015128595A1
    • 2015-09-03
    • PCT/GB2014/050565
    • 2014-02-25
    • WALTERS, Christopher Paulet Melmoth
    • WALTERS, Christopher Paulet Melmoth
    • F16F15/121
    • B64C27/001B64C27/82B64C2027/003F16F15/124F16F2230/0064
    • A torsional vibration damper, for example for damping lead lag vibrations in the blades of a helicopter tail rotor, comprises a damping unit having first and second members (20, 22) which are rotatable relatively to one another about a central axis (12). The first member (20) carries cam blocks (30) provided with cam follower surfaces (42, 44, 46, 48). The cam follower surfaces (42, 44, 46, 48) are contacted by contact faces (70, 72, 74, 76) on flexible fingers (38, 40). Relative rotational movement between the first and second members (20, 22) is accompanied by displacement of the contact faces (70, 72, 74, 76) over the cam follower surfaces (42, 44, 46, 48) and resulting deflection of the fingers (38, 40). The resulting frictional forces and bending stresses serve to damp lead lag blade oscillations.
    • 例如用于阻尼直升机尾部转子的叶片中的牵引滞后振动的扭转振动阻尼器包括阻尼单元,该阻尼单元具有围绕中心轴线(12)可相对于彼此旋转的第一和第二构件(20,22)。 第一构件(20)承载设置有凸轮从动件表面(42,44,46,48)的凸轮块(30)。 凸轮从动件表面(42,44,46,48)在柔性指状物(38,40)上与接触面(70,72,74,76)接触。 第一和第二构件(20,22)之间的相对旋转运动伴随着凸轮从动件表面(42,44,46,48)上的接触面(70,72,74,76)的位移,并且导致 手指(38,40)。 所产生的摩擦力和弯曲应力用于阻尼前置叶片振荡。