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    • 8. 发明公开
    • CONTROLLING NOZZLE AREAS OF VARIABLE AREA FAN NOZZLES
    • 维多利亚·德·史密斯
    • EP3073101A1
    • 2016-09-28
    • EP16161346.8
    • 2016-03-21
    • The Boeing Company
    • JACKOWSKI, Jason JCARPENTER, Matthew AKARNOFSKI, Kent E
    • F02K1/12F02K1/15F02K3/02
    • F02K1/18F02K1/12F02K1/1207F02K1/15F02K3/025F05D2270/821Y02T50/671Y02T50/677
    • Provided are methods and systems for measuring and controlling nozzle areas of variable area fan nozzles. A control system attached to a nozzle includes a cable having one end connected to a linear displacement measuring device, such as a string potentiometer. The other end of the cable is connected to a petal. A reference portion of the cable extends across multiple petals of the nozzle and substantially parallel to the nozzle circumference. The linear displacement measuring device measures any changes in the length of this reference portion as the petals actuate outwardly or inwardly during operation of the nozzle. The output of the linear displacement measuring device may be used to control actuators that move the petals. In some embodiments, potentiometer's output may be combined with one or more outputs from other sensors, such as a linear variable differential transducer and/or thermocouple.
    • 提供了用于测量和控制可变区域风扇喷嘴的喷嘴区域的方法和系统。 附接到喷嘴的控制系统包括具有连接到诸如串电位计的线性位移测量装置的一端的电缆。 电缆的另一端连接到花瓣。 电缆的参考部分延伸穿过喷嘴的多个花瓣并且基本上平行于喷嘴圆周。 线性位移测量装置在喷嘴操作期间花瓣向外或向内致动时,测量该参考部分长度的任何变化。 线性位移测量装置的输出可用于控制移动花瓣的致动器。 在一些实施例中,电位器的输出可以与来自其它传感器(例如线性可变差分换能器和/或热电偶)的一个或多个输出组合。