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公开(公告)号：US10717261B2
公开(公告)日：2020-07-21
申请号：US15788506
申请日：2017-10-19
Applicant: Bell Helicopter Textron Inc.
Inventor： Thomas S. Chiang , Jared Mark Paulson
IPC: B32B43/00 , B32B38/00 , B32B37/12 , B64C11/20 , B64D15/12 , B29C65/00 , B32B7/06 , C09J163/00 , B29C65/48 , B64F5/40 , B29C65/76 , B29C65/50 , B64C27/473 , B64D45/00 , B29L31/08 , B29K105/16
Abstract: An intentionally activated frangible bonding system comprises a frangible adhesive, adhesive primer, composite material matrix, and/or the like, having a polydispersion of at least one additive spread throughout the frangible bonding material. The additive degrades a bond provided by the frangible bonding material, upon application of a specific energy to the frangible bonding material. An energy emitter is configured to selectively direct the specific energy toward a structure or assembly comprising components bonded by the frangible bonding material to degrade the frangible bonding material bonding the components for disassembly.
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公开(公告)号：US20190118523A1
公开(公告)日：2019-04-25
申请号：US15788506
申请日：2017-10-19
Applicant: Bell Helicopter Textron Inc.
Inventor： Thomas S. Chiang , Jared Mark Paulson
Abstract: An intentionally activated frangible bonding system comprises a frangible adhesive, adhesive primer, composite material matrix, and/or the like, having a polydispersion of at least one additive spread throughout the frangible bonding material. The additive degrades a bond provided by the frangible bonding material, upon application of a specific energy to the frangible bonding material. An energy emitter is configured to selectively direct the specific energy toward a structure or assembly comprising components bonded by the frangible bonding material to degrade the frangible bonding material bonding the components for disassembly.
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公开(公告)号：US20190032491A1
公开(公告)日：2019-01-31
申请号：US15658928
申请日：2017-07-25
Applicant: Bell Helicopter Textron Inc.
Inventor： Jeffrey Nissen , Jared M. Paulson , Thomas S. Chiang
IPC: F01D5/14 , F01D5/00 , B64C11/26 , B33Y50/02 , B22F3/00 , B29C64/386 , B33Y10/00 , B29C73/04 , B22F5/04 , B33Y80/00 , B23P6/00 , B23K15/00 , B23K26/342
Abstract: In a first aspect, there is a method of making a rotor blade, including designing at least one of an upper skin, a lower skin, a support network, and components therefor; and forming at least one of the upper skin, the lower skin, a support network, and components therefor using an additive manufacturing process. In a second aspect, there is an airfoil member having a root end, a tip end, a leading edge, and a trailing edge, the airfoil member including an upper skin; a lower skin; and a support network having a plurality of interconnected support members in a lattice arrangement and/or a reticulated arrangement, the support network being configured to provide tailored characteristics of the airfoil member. Also provided are methods and systems for repairing an airfoil member.
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公开(公告)号：US20200269556A1
公开(公告)日：2020-08-27
申请号：US16281960
申请日：2019-02-21
Applicant: Bell Helicopter Textron Inc.
Inventor： Thomas S. Chiang , Jared M. Paulson
Abstract: A thermally conductive curing process adds conductive additives to create pathways for dissipating heat during a curing process, thereby reducing the cure time, increasing the output capability, and reducing cost. Conductive particles or short fibers can be dispersed throughout the resin system or composite fiber layers in pre-impregnated or RTM-processed composite material. By disposing conductive particles or short fibers in a resin as part of the curing process, heat generated during the curing process can dissipate more quickly from any type of composite, especially thick composites. Conductive additive examples include multi-walled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWCNTs), graphene/graphite powder, buckyballs, short fibrous particulate, nano-clays, nano-particles, and other suitable materials.
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