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公开(公告)号：US20140338324A1
公开(公告)日：2014-11-20
申请号：US13893372
申请日：2013-05-14
申请人： The Boeing Company
IPC分类号： F03G7/06
CPC分类号： F03G7/065 , F02K1/1207 , F02K1/805 , F05D2300/505 , Y02T50/672
摘要： A variable area fan nozzle comprising an array of hinged rigid petals and a petal actuation system in which the principle of actuation is realized by changes in shape (i.e., deformation) of the actuators rather than by movement of cooperating mechanical parts. Because these actuators have no rotating or sliding mechanical components, wear and associated maintenance are reduced. Each deformable actuator has a portion made of shape memory alloy that has been trained to change shape in a specific manner when heated to a temperature above a transition temperature. In addition, each shape memory alloy actuator is shaped to act as a fairing to reduce aerodynamic drag.
摘要翻译： 一种可变区域风扇喷嘴，包括铰接的刚性花瓣和花瓣致动系统的阵列，其中致动原理通过致动器的形状（即变形）的变化而不是由配合的机械部件的移动来实现。 因为这些致动器没有旋转或滑动的机械部件，因此减少了磨损和相关的维护。 每个可变形的致动器具有由形状记忆合金制成的部分，当被加热到高于转变温度的温度时，它已被训练成以特定方式改变形状。 另外，每个形状记忆合金致动器被成形为作为整流罩以减小气动阻力。
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公开(公告)号：US11155343B2
公开(公告)日：2021-10-26
申请号：US16222613
申请日：2018-12-17
申请人： The Boeing Company
摘要： Braking systems for aircraft are disclosed. An example braking system includes a fan cowl having a leading edge and a trailing edge. The braking system includes a hinge assembly coupled between the leading edge and a fan cage of an aircraft engine to enable the fan cowl to move between a stowed position and a deployed position. An actuator is coupled to the leading edge of the fan cowl, and the actuator is to move the fan cowl via the hinge from the stowed position to the deployed position in a direction away from the aircraft engine and toward a fore end of the aircraft to provide an air brake during a braking event.
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公开(公告)号：US20180162541A1
公开(公告)日：2018-06-14
申请号：US15379101
申请日：2016-12-14
申请人： The Boeing Company
CPC分类号： B64D27/26 , B64D27/18 , B64D29/02 , B64D2027/262 , B64D2027/264
摘要： Variable incident nacelle apparatus and methods are disclosed herein. An apparatus for varying an incident angle of a nacelle of an aircraft engine relative to an aircraft wing comprises a pylon frame member to be rigidly coupled to the aircraft engine. The pylon frame member is to be pivotable about a first axis of rotation. The apparatus further comprises a diagonal brace including a first end defining an aperture to receive a portion of a drive member. The portion of the drive member is to be rotatable relative to the aperture about a second axis of rotation. The drive member includes a pin positioned eccentrically relative to the second axis of rotation. The pin is to be coupled to the pylon frame member to pivot the pylon frame member in response to rotation of the portion of the drive member.
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公开(公告)号：US09581145B2
公开(公告)日：2017-02-28
申请号：US13893372
申请日：2013-05-14
申请人： The Boeing Company
CPC分类号： F03G7/065 , F02K1/1207 , F02K1/805 , F05D2300/505 , Y02T50/672
摘要： A variable area fan nozzle comprising an array of hinged rigid petals and a petal actuation system in which the principle of actuation is realized by changes in shape (i.e., deformation) of the actuators rather than by movement of cooperating mechanical parts. Because these actuators have no rotating or sliding mechanical components, wear and associated maintenance are reduced. Each deformable actuator has a portion made of shape memory alloy that has been trained to change shape in a specific manner when heated to a temperature above a transition temperature. In addition, each shape memory alloy actuator is shaped to act as a fairing to reduce aerodynamic drag.
摘要翻译： 一种可变区域风扇喷嘴，包括铰接的刚性花瓣和花瓣致动系统的阵列，其中致动原理通过致动器的形状（即变形）的变化而不是由配合的机械部件的移动来实现。 因为这些致动器没有旋转或滑动的机械部件，因此减少了磨损和相关的维护。 每个可变形的致动器具有由形状记忆合金制成的部分，当被加热到高于转变温度的温度时，它已被训练成以特定方式改变形状。 另外，每个形状记忆合金致动器被成形为作为整流罩以减小气动阻力。
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公开(公告)号：US11186362B2
公开(公告)日：2021-11-30
申请号：US16222633
申请日：2018-12-17
申请人： The Boeing Company
摘要： Braking systems for aircraft are disclosed. An example braking system includes a brake pad movably coupled to a lower section of a fuselage of the aircraft. The brake pad is movable between a stowed position and a deployed position. An actuator is configured to deploy the brake pad from the fuselage during an emergency braking event. The brake pad to engage a surface of a runway and increase frictional force to reduce a speed of the aircraft during the emergency braking event.
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公开(公告)号：US09650991B2
公开(公告)日：2017-05-16
申请号：US13928407
申请日：2013-06-27
申请人： The Boeing Company
CPC分类号： F02K1/18 , F02K1/1207 , F02K1/72 , F05D2250/11 , F05D2260/56
摘要： 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.
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公开(公告)号：US20150000305A1
公开(公告)日：2015-01-01
申请号：US13928407
申请日：2013-06-27
申请人： The Boeing Company
IPC分类号： F02C7/00
CPC分类号： F02K1/18 , F02K1/1207 , F02K1/72 , F05D2250/11 , F05D2260/56
摘要： 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.
摘要翻译： 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。
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