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公开(公告)号：EP2983986A1
公开(公告)日：2016-02-17
申请号：EP14782143.3
申请日：2014-03-26
IPC分类号： B64C27/473
CPC分类号： B64C27/33
摘要： A rotor blade assembly includes one or more flex-beam members and a torque tube surrounding the one or more flex-beam members and extending at least partially along a rotor blade assembly length. A pitch bearing assembly is supportive of the torque tube relative to the one or more flex-beam members and includes at least two outer bearing members secured to the torque tube and an inner bearing member positioned at least partially within the at least two inner bearing members and secured to the one or more flex beam members. A change in a stiffness of the inner bearing member changes one or more dynamic characteristics of the rotor blade assembly.
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公开(公告)号：EP2983986B1
公开(公告)日：2020-05-06
申请号：EP14782143.3
申请日：2014-03-26
IPC分类号： B64C27/473 , B64C27/33
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公开(公告)号：EP2976259B1
公开(公告)日：2018-10-17
申请号：EP14798560.0
申请日：2014-03-18
发明人： THOMAS, Justin , NUSSENBLATT, Eric Lucien , PARSONS, Eric S. , CASEY, Ryan Thomas , HUNTER, David H.
IPC分类号： B64C27/33
CPC分类号： B64C27/33 , B64C27/473 , B64C27/48 , Y10T29/49332
摘要： A spar for a rotor blade assembly is provided including a generally hollow tubular body. A spacer protrudes from at least one surface of the body along a length of the body. A hole extends through the body and the spacer. The hole is configured to align with a through hole in an adjacent flexbeam assembly. The spacer is configured to contact a surface of the adjacent flexbeam assembly to create a match fit between the body and the flexbeam assembly.
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公开(公告)号：EP3052380B1
公开(公告)日：2019-11-06
申请号：EP14847515.5
申请日：2014-09-29
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公开(公告)号：EP3052380A1
公开(公告)日：2016-08-10
申请号：EP14847515.5
申请日：2014-09-29
IPC分类号： B64C27/35
摘要： A pitch bearing for connecting first and second articles is provided. The first article includes a first curved outer surface and the second article includes a second curved outer surface opposite the first curved outer surface. The pitch bearing includes an axisymmetric structure interposed between the first and second curved outer surfaces. The axisymmetric structure includes compliant layers and stabilizing layers interleaved between the compliant layers. The compliant layers and the stabilizing layers proximate to the first article haves a curvature matching that of the first curved outer surface. The compliant layers and the stabilizing layers proximate to the second article have a curvature matching that of the second curved outer surface. A shear stiffness of each of the stabilizing layers is greater than a shear stiffness of each of the compliant layers.
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公开(公告)号：EP2976259A2
公开(公告)日：2016-01-27
申请号：EP14798560.0
申请日：2014-03-18
发明人： THOMAS, Justin , NUSSENBLATT, Eric Lucien , PARSONS, Eric S. , CASEY, Ryan Thomas , HUNTER, David H.
IPC分类号： B64C27/33
CPC分类号： B64C27/33 , B64C27/473 , B64C27/48 , Y10T29/49332
摘要： A spar for a rotor blade assembly is provided including a generally hollow tubular body. A spacer protrudes from at least one surface of the body along a length of the body. A hole extends through the body and the spacer. The hole is configured to align with a through hole in an adjacent flexbeam assembly. The spacer is configured to contact a surface of the adjacent flexbeam assembly to create a match fit between the body and the flexbeam assembly.
摘要翻译： 提供了一种用于转子叶片组件的翼梁，包括大致中空的管状体。 间隔件沿着身体的长度从身体的至少一个表面突出。 孔延伸穿过主体和间隔件。 该孔构造成与相邻柔性梁组件中的通孔对准。 间隔件构造成接触相邻柔性梁组件的表面以在主体和挠性束组件之间形成匹配配合。
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