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    • 2. 发明授权
    • Wireless sensor for an aircraft propulsion system
    • 用于飞机推进系统的无线传感器
    • US08482434B2
    • 2013-07-09
    • US12884803
    • 2010-09-17
    • Sanjay BajekalPeter G. SmithVijaya Ramaraju LakamrajuNicholas C. Soldner
    • Sanjay BajekalPeter G. SmithVijaya Ramaraju LakamrajuNicholas C. Soldner
    • G08B21/00
    • B64C27/008B64D2045/0085F01D21/003F05D2260/80
    • A method is provided for wirelessly monitoring an aircraft propulsion system having a plurality of rotor blades, at least some of which rotor blades have an internal compartment. The method includes: providing a primary transducer having a primary coil, and one or more secondary transducers, each secondary transducer having a secondary coil connected to a sensor, wherein the secondary transducers are respectively disposed within the internal compartments; wirelessly powering the secondary transducers using a magnetic field generated by the primary transducer; monitoring at least one operational parameter from within each internal compartment using a respective sensor; and transmitting output signals from the secondary transducers to the primary transducer through the magnetic field, wherein the output signals are indicative of the monitored parameters.
    • 提供了一种用于无线监测具有多个转子叶片的飞机推进系统的方法,其中至少一些转子叶片具有内部隔室。 该方法包括:提供具有初级线圈和一个或多个次级换能器的主换能器,每个次级换能器具有连接到传感器的次级线圈,其中所述次级换能器分别设置在所述内部隔间内; 使用由主换能器产生的磁场无线地为次级换能器供电; 使用相应的传感器监测来自每个内部隔室内的至少一个操作参数; 以及通过所述磁场将来自所述次级换能器的输出信号发送到所述主换能器,其中所述输出信号指示所监视的参数。
    • 7. 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。