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    • 71. 发明申请
    • Pivoting Ring Petal Actuation for Variable Area Fan Nozzle
    • 可变区域风扇喷嘴的旋转环花瓣致动
    • US20150000305A1
    • 2015-01-01
    • US13928407
    • 2013-06-27
    • The Boeing Company
    • Christopher T. Jasklowski
    • F02C7/00
    • F02K1/18F02K1/1207F02K1/72F05D2250/11F05D2260/56
    • A variable area fan nozzle comprising an array of rigid petals and a petal actuation system comprising left and right assemblies, each assembly comprising: a multiplicity of tracks attached to or integrally formed with respective petals; a curved pivoting ring segment; an actuator coupled to the ring segment; and a multiplicity of sets of cam followers spaced along the ring segment and aligned with respective tracks. Each ring segment is pivotable between first and second angular positions depending on how the state of the actuator changes. As one ring segment pivots in one direction, one set of cam followers exert inward forces on the tracks to deflect petals inward; as that ring segment pivots in the other direction, another set of cam followers exert outward forces on the tracks to deflect petals outward.
    • 一种可变区域风扇喷嘴,包括刚性花瓣阵列和包括左组件和右组件的花瓣致动系统,每个组件包括:多个轨道,其连接到或与其相应的花瓣一体形成; 弯曲的枢转环段; 耦合到所述环段的致动器; 以及沿着环形部分间隔开并与相应的轨道对准的多组凸轮从动件。 根据致动器的状态如何变化,每个环段可在第一和第二角位置之间枢转。 当一个环段在一个方向上枢转时,一组凸轮从动件在轨道上施加向内的力以使花瓣向内偏转; 当该环段沿另一方向枢转时,另一组凸轮从动件在轨道上施加向外的力以使花瓣向外偏转。