公开(公告)号：CA2786533A1

公开(公告)日：2011-08-11

申请号：CA2786533

申请日：2010-02-05

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： HETHCOCK JAMES D JR ,  NUNN KENNETH E JR ,  MAY CARL A

IPC: B32B1/00 ,  B32B37/00

Abstract: A method of making a core-stiffened structure includes the steps of providing a honeycomb core having an adhesive disposed on first and second surfaces thereof, providing a first skin and a second skin, and assembling the first skin, the second skin, and the honeycomb core to form the core-stiffened structure. The method further includes the steps of curing the core-stiffened structure and inhibiting at least one of the first skin and the second skin from protruding into at least one cell of the honeycomb core during the step of curing the core-stiffened structure.

公开(公告)号：CA2843930A1

公开(公告)日：2014-09-01

申请号：CA2843930

申请日：2014-02-21

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  HETHCOCK JAMES D JR ,  MCNEILL DAVID B

IPC: B29C53/60

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.

公开(公告)号：CA2843930C

公开(公告)日：2017-06-20

申请号：CA2843930

申请日：2014-02-21

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  HETHCOCK JAMES D JR ,  MCNEILL DAVID B

IPC: B29C53/60

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.

公开(公告)号：CA2786533C

公开(公告)日：2016-03-22

申请号：CA2786533

申请日：2010-02-05

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： HETHCOCK JAMES D JR ,  NUNN KENNETH E JR ,  MAY CARL A

IPC: B32B3/12 ,  B32B7/12 ,  B32B37/12

Abstract: A method of making a core-stiffened structure includes the steps of providing a honeycomb core having an adhesive disposed on first and second surfaces thereof, providing a first skin and a second skin, and assembling the first skin, the second skin, and the honeycomb core to form the core-stiffened structure. The method further includes the steps of curing the core-stiffened structure and inhibiting at least one of the first skin and the second skin from protruding into at least one cell of the honeycomb core during the step of curing the core-stiffened structure.

公开(公告)号：CA2844210C

公开(公告)日：2016-09-06

申请号：CA2844210

申请日：2014-02-26

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  HETHCOCK JAMES D JR ,  TOHLEN MARK E ,  KENDRICK PHILLIP A

IPC: B29C53/50

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.

公开(公告)号：CA2826997C

公开(公告)日：2016-02-23

申请号：CA2826997

申请日：2013-09-13

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  LEE WEI-YUEH ,  HETHCOCK JAMES D JR ,  MCCULLOUGH JOHN R ,  TISDALE PATRICK R

IPC: B64C27/473 ,  B29C70/68 ,  B64C3/20 ,  B64C11/26 ,  F01D5/14

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：CA2844210A1

公开(公告)日：2014-09-15

申请号：CA2844210

申请日：2014-02-26

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  HETHCOCK JAMES D JR ,  TOHLEN MARK E ,  KENDRICK PHILLIP A

IPC: B29C53/50

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.

公开(公告)号：CA2826997A1

公开(公告)日：2014-03-14

申请号：CA2826997

申请日：2013-09-13

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： OLDROYD PAUL K ,  LEE WEI-YUEH ,  HETHCOCK JAMES D JR ,  MCCULLOUGH JOHN R ,  TISDALE PATRICK R

IPC: B64C27/473 ,  B29C70/68 ,  B64C3/20 ,  B64C11/26 ,  F01D5/14

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：EP2516147A4

公开(公告)日：2013-07-31

申请号：EP10845381

申请日：2010-02-05

Applicant: BELL HELICOPTER TEXTRON INC

Inventor： HETHCOCK JAMES D JR ,  NUNN KENNETH E JR ,  MAY CARL A

IPC: B32B3/12 ,  B29C70/08 ,  B29C70/34 ,  B29C70/86 ,  B32B37/10 ,  B32B37/14

CPC classification number: B32B37/146 ,  B29C70/086 ,  B29C70/342 ,  B29C70/86 ,  B29D24/007 ,  B29K2105/0097 ,  B32B3/12 ,  B32B7/06 ,  B32B7/12 ,  B32B15/08 ,  B32B27/06 ,  B32B37/0007 ,  B32B37/12 ,  B32B2262/00 ,  B32B2307/546 ,  B32B2307/732 ,  Y10T428/236 ,  Y10T428/24149 ,  Y10T428/24157

Abstract: A method of making a core-stiffened structure includes the steps of providing a honeycomb core having an adhesive disposed on first and second surfaces thereof, providing a first skin and a second skin, and assembling the first skin, the second skin, and the honeycomb core to form the core-stiffened structure. The method further includes the steps of curing the core-stiffened structure and inhibiting at least one of the first skin and the second skin from protruding into at least one cell of the honeycomb core during the step of curing the core-stiffened structure.