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    • 3. 发明授权
    • Aircraft propeller with improved electrically de-icer leads
    • 具有改进的电除冰器导线的飞机螺旋桨
    • US5020741A
    • 1991-06-04
    • US447410
    • 1989-12-07
    • David E. ZieglerArthur J. Bowser
    • David E. ZieglerArthur J. Bowser
    • B64D15/12H01B7/22H02G11/00
    • B64D15/12H01B7/223H02G11/00
    • A multiple blade aircraft propeller hub has a bulkhead supporting concentric slip rings connected by slide blocks to the aircraft electrical system. Electrical conducting flexible leads connect the slip rings to electrical heating elements or de-icing boots carried by the propeller blades. Each of the leads includes an elongated flexible braided copper tube for conducting electricity and which loosely surrounds a flexible multiple strand stainless steel cable, and an extruded flexible vinyl insulating tube loosely surrounds the braided tube. The leads provide for minimizing stresses and metal fatigue in the electrical conducting braided tube with changes in blade pitch and thereby provide for a substantially extended service life.
    • 多叶片飞机螺旋桨轮毂具有支撑通过滑块与飞机电气系统连接的同心滑环的舱壁。 导电柔性引线将滑环连接到由螺旋桨叶片承载的电加热元件或除冰靴。 每个引线包括用于导电的细长柔性编织铜管,并且松动地围绕柔性多股不锈钢电缆,并且挤出的柔性乙烯基绝缘管松散地围绕编织管。 这些引线用于使导电编织管中的应力和金属疲劳最小化,同时叶片间距发生变化,从而提供大大延长的使用寿命。