公开(公告)号：US09120246B2

公开(公告)日：2015-09-01

申请号：US13782127

申请日：2013-03-01

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  James D. Hethcock, Jr. ,  David B. McNeill

IPC: B29C33/04 ,  B29C43/02 ,  B29C53/82 ,  B32B3/12 ,  B29C33/02 ,  B29C33/76 ,  B29C65/00 ,  B29C70/34 ,  B29C33/48 ,  B29D99/00 ,  B31D3/02 ,  B29C43/32 ,  B29L31/60 ,  B29C35/04

CPC classification number: B29C33/02 ,  B29C33/046 ,  B29C33/485 ,  B29C33/76 ,  B29C35/045 ,  B29C53/821 ,  B29C53/824 ,  B29C66/8284 ,  B29C70/347 ,  B29C2035/046 ,  B29C2043/3261 ,  B29D99/0089 ,  B29L2031/608 ,  B31D3/0223 ,  B32B3/12 ,  B32B2305/024

Abstract: A method of making a composite core can include configuring a plurality of mandrels to have a desired thermal expansion characteristic, placing a composite material around each mandrel, placing the plurality of mandrels in a tool, the tool being configured to constrain the plurality of mandrels as the mandrels experience a thermal expansion, heating the mandrels so that the mandrels thermally expand, thereby applying a pressure to the composite material during a cure cycle, and then cooling and separating the mandrels from the composite core. The mandrel is configured as an internal form for making a tube member of a composite core.

Abstract translation: 制造复合芯的方法可以包括配置多个心轴以具有期望的热膨胀特性，将复合材料放置在每个心轴周围，将多个心轴放置在工具中，该工具被配置为将多个心轴约束为 心轴经历热膨胀，加热心轴使得心轴热膨胀，从而在固化循环期间对复合材料施加压力，然后冷却并将复合芯分离。 心轴被构造成用于制造复合芯的管构件的内部形式。

公开(公告)号：US10604226B2

公开(公告)日：2020-03-31

申请号：US15488217

申请日：2017-04-14

Applicant: Bell Helicopter Textron Inc.

Inventor： Carl May ,  James D. Hethcock, Jr. ,  John R. McCullough

IPC: B64C1/12 ,  B32B3/12 ,  B32B5/18 ,  B32B5/24

Abstract: An aircraft includes a composite structure, comprising an outer skin formed from a composite material and having a first thickness, an inner skin formed from a composite material and having a second thickness, the second thickness being greater than the first thickness, and a core structure positioned between the inner and outer skins to increase bending stiffness of the composite structure. During use a structural load carried by the inner skin exceeds a structural load carried by the outer skin.

公开(公告)号：US10669021B2

公开(公告)日：2020-06-02

申请号：US14022524

申请日：2013-09-10

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  Wei-Yueh Lee ,  James D. Hethcock, Jr. ,  John R. McCullough ,  Patrick R. Tisdale

IPC: B64C27/473 ,  B64C3/20

Abstract: An airfoil member can have a root end, a tip end, a leading edge, and a trailing edge. The airfoil member can include an upper skin, a lower skin, and a composite core member having a plurality of cells, an upper surface network of the cells can be bonded to the upper skin, a lower surface network of the cells can be bonded to the lower skin. The composite core can have a septum layer embedded in the cells that form the composite core, the septum layer being configured to provide tailored characteristics of the airfoil member.

公开(公告)号：US09120255B2

公开(公告)日：2015-09-01

申请号：US13835649

申请日：2013-03-15

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  James D. Hethcock, Jr. ,  Mark E. Tohlen ,  Phillip A. Kendrick

IPC: B29C53/58 ,  B29C41/08 ,  B29C70/32 ,  B29C70/34 ,  B29D99/00 ,  B29C53/82 ,  B29C41/52 ,  B29C33/48 ,  B29C33/52 ,  B29L31/60 ,  B29K105/08

CPC classification number: B29C41/085 ,  B29C33/485 ,  B29C33/52 ,  B29C41/52 ,  B29C53/821 ,  B29C53/828 ,  B29C70/32 ,  B29C70/345 ,  B29C2793/0027 ,  B29D99/0089 ,  B29K2105/0872 ,  B29L2031/608

Abstract: A method of wrapping a plurality of mandrels with a composite material can include rotating each mandrel at a rotational speed; translating each mandrel at a translation speed; positioning each mandrel back to back such that an aft face of a preceding mandrel is approximate to a forward face of a trailing mandrel; and sequentially wrapping each mandrel with the composite material in a helical orientation.

Abstract translation: 用复合材料包裹多个心轴的方法可以包括以一转动速度旋转每个心轴; 以平移速度平移每个心轴; 将每个心轴背靠背定位，使得前一个心轴的后表面接近拖尾心轴的前面; 并且顺序地将每个心轴与复合材料缠绕成螺旋方向。

公开(公告)号：US20140265043A1

公开(公告)日：2014-09-18

申请号：US13835649

申请日：2013-03-15

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  James D. Hethcock, Jr. ,  Mark E. Tohlen ,  Phillip A. Kendrick

IPC: B29C41/08 ,  B29C41/52

CPC classification number: B29C41/085 ,  B29C33/485 ,  B29C33/52 ,  B29C41/52 ,  B29C53/821 ,  B29C53/828 ,  B29C70/32 ,  B29C70/345 ,  B29C2793/0027 ,  B29D99/0089 ,  B29K2105/0872 ,  B29L2031/608

Abstract: A method of wrapping a plurality of mandrels with a composite material can include rotating each mandrel at a rotational speed; translating each mandrel at a translation speed; positioning each mandrel back to back such that an aft face of a preceding mandrel is approximate to a forward face of a trailing mandrel; and sequentially wrapping each mandrel with the composite material in a helical orientation.

Abstract translation: 用复合材料包裹多个心轴的方法可包括以一转动速度旋转每个心轴; 以平移速度平移每个心轴; 将每个心轴背靠背定位，使得前一个心轴的后表面接近拖尾心轴的前面; 并且顺序地将每个心轴与复合材料缠绕成螺旋方向。