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公开(公告)号：US20220177378A1
公开(公告)日：2022-06-09
申请号：US17110945
申请日：2020-12-03
Applicant: RAYTHEON TECHNOLOGIES CORPORATION
Inventor： Kathryn S. Read , Andrew J. Lazur , Afshin Bazshushtari
Abstract: A ceramic matrix composite includes at least one ply of ceramic fibers and a a ceramic matrix material deposited on the ceramic fibers. A fiber volume fraction is between about 35-45% and an areal weight fibers is between about 150-450 g/m2. A method of fabricating a ceramic matrix composite component is also disclosed.
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公开(公告)号：US11858861B2
公开(公告)日：2024-01-02
申请号：US17460686
申请日：2021-08-30
Applicant: Raytheon Technologies Corporation
Inventor： Kathryn S. Read , John D. Riehl
IPC: C04B35/80 , C04B35/628 , C04B35/634 , C04B35/638
CPC classification number: C04B35/80 , C04B35/62863 , C04B35/638 , C04B35/6342 , C04B2235/3826 , C04B2235/5256 , C04B2235/616
Abstract: A method of forming a ceramic matrix composite includes applying a tackifier of ethanol and 3% to 12% polyvinyl butyral to a ceramic material, removing the ethanol from the ceramic material, and removing the polyvinyl butyral. The step of applying the tackifier includes one of a spraying, pipetting, painting, and immersing technique.
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公开(公告)号：US11725522B2
公开(公告)日：2023-08-15
申请号：US17149944
申请日：2021-01-15
Applicant: RAYTHEON TECHNOLOGIES CORPORATION
Inventor： Jonas S. Banhos , Kathryn S. Read , Raymond Surace , Olivier H. Sudre
CPC classification number: F01D5/282 , F01D5/147 , F01D5/18 , F05D2200/11 , F05D2240/301 , F05D2240/304 , F05D2250/75 , F05D2300/6033 , F05D2300/6034
Abstract: An airfoil includes an airfoil wall that defines a leading end, a trailing end, and pressure and suction sides that join the leading end and the trailing end. The airfoil wall includes a wishbone-shaped fiber layer structure that has a pair of arms that merge into a single leg. The pair of arms are formed by first and second S-shaped fiber layers each of which is comprised of a network of fiber tows. The first and second S-shaped fiber layers merge to form the single leg. The single leg comprises fiber tows from each of the first and second S-shaped fiber layers that are interwoven, and the single leg forms at least a portion of the trailing end of the airfoil wall.
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公开(公告)号：US20230193541A1
公开(公告)日：2023-06-22
申请号：US17645194
申请日：2021-12-20
Applicant: Raytheon Technologies Corporation
Inventor： Kathryn S. Read , Brendan M. Lenz
CPC classification number: D06B1/04 , C04B35/80 , D10B2101/08 , C04B2235/614 , C04B2235/786
Abstract: A method of preparing a ceramic fabric and ceramic matrix composite components constructed from the ceramic fabric include transforming ceramic tows, or ceramic fabrics, to varying degrees from a first tow geometry to a second tow geometry, thereby reducing a first dimension of the ceramic tows and increasing a second dimension of the ceramic tows orthogonal to the first dimension. Plies constructed with flattened tows, or as-received tows, have various inter-tow pore sizes that are arranged with increasing inter-tow pore size towards exterior surfaces of the preform structure.
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公开(公告)号：US20230193527A1
公开(公告)日：2023-06-22
申请号：US17556443
申请日：2021-12-20
Applicant: Raytheon Technologies Corporation
Inventor： Kathryn S. Read
IPC: D03D15/242 , D06M11/84 , D06M23/00
CPC classification number: D03D15/242 , D06M11/84 , D06M23/00 , D10B2101/08
Abstract: A method of preparing a ceramic fabric for use in a ceramic matrix composite includes arranging a plurality of tows to form a ceramic fabric with a first inter-tow spacing, applying a binder material to the ceramic fabric, and applying pressure to the ceramic fabric to form a pressure stabilized ceramic fabric. Each of the plurality of tows of the ceramic fabric has a first thickness, and each of at least a subset of the plurality of tows of the pressure stabilized ceramic fabric has a second thickness less than the first thickness.
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Patent Agency Ranking
公开(公告)号：US20230192560A1
公开(公告)日：2023-06-22
申请号：US18082770
申请日：2022-12-16
Applicant: Raytheon Technologies Corporation
Inventor： Shaun M. Enos , Kathryn S. Read , James T. Beals , Robin H. Fernandez , John E. Holowczak
IPC: C04B35/80 , F26B5/06 , D06M23/00 , D06M13/248 , D06M13/432 , C04B35/626 , C04B35/638
CPC classification number: C04B35/80 , C04B35/638 , C04B35/62655 , C04B35/62675 , D06M13/248 , D06M13/432 , D06M23/00 , F26B5/06 , D06M2200/00
Abstract: A method of spreading fiber tows includes assembling a fibrous composite from a plurality of tows, applying an aqueous solution to the fibrous composite, freezing the fibrous composite after applying the aqueous solution, freeze drying the fibrous composite to remove water from the fibrous composite, and heating the fibrous composite after freeze drying to remove a cryoprotectant from the fibrous composite. The aqueous solution comprises water and the cryoprotectant and freezing the fibrous composite spreads filaments within the plurality of fiber tows.
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公开(公告)号：US11591920B2
公开(公告)日：2023-02-28
申请号：US17504627
申请日：2021-10-19
Applicant: RAYTHEON TECHNOLOGIES CORPORATION
Inventor： Jon E. Sobanski , Kathryn S. Read
Abstract: A vane arc segment includes an airfoil piece that defines first and second platforms and a airfoil section that extends between the first and second platforms. The airfoil section has a trailing edge, a leading edge, a pressure side, and a suction side. The platforms each define first and second circumferential mate faces, forward and aft sides, a gaspath side, a non-gaspath side, and a radial flange that projects from the non-gaspath side. Each radial flange extends continuously and includes a first leg portion that extends adjacent the trailing edge, a second leg portion that extends from the first leg portion and curves around the suction side, and a third leg portion that extends from the second leg portion toward the forward side.
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公开(公告)号：US20220154587A1
公开(公告)日：2022-05-19
申请号：US17504627
申请日：2021-10-19
Applicant: RAYTHEON TECHNOLOGIES CORPORATION
Inventor： Jon E. Sobanski , Kathryn S. Read
Abstract: A vane arc segment includes an airfoil piece that defines first and second platforms and a airfoil section that extends between the first and second platforms. The airfoil section has a trailing edge, a leading edge, a pressure side, and a suction side. The platforms each define first and second circumferential mate faces, forward and aft sides, a gaspath side, a non-gaspath side, and a radial flange that projects from the non-gaspath side. Each radial flange extends continuously and includes a first leg portion that extends adjacent the trailing edge, a second leg portion that extends from the first leg portion and curves around the suction side, and a third leg portion that extends from the second leg portion toward the forward side.
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公开(公告)号：US20210239008A1
公开(公告)日：2021-08-05
申请号：US17239310
申请日：2021-04-23
Applicant: Raytheon Technologies Corporation
Inventor： Kathryn S. Read
Abstract: A space filler for forming a fibrous preform may comprise an additively manufactured ceramic material. The additively manufactured ceramic material may define a plurality of pores. A shape of the additively manufactured ceramic material may complement a shape of a void formed by fibrous regions of the fibrous preform.
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公开(公告)号：US20210053882A1
公开(公告)日：2021-02-25
申请号：US17092541
申请日：2020-11-09
Applicant: Raytheon Technologies Corporation
Inventor： Richard Wesley Jackson , Kathryn S. Read , Jeremy R. Hart , Andrew J. Lazur
IPC: C04B35/515 , C04B35/589 , C04B35/571 , C04B35/583 , C04B35/117 , C04B35/83 , C04B35/634 , C04B35/01 , C04B35/584 , C04B35/628 , C04B35/565 , C04B35/488 , C04B35/626 , C04B35/532 , C04B35/64 , C04B35/638
Abstract: A method of producing an enhanced ceramic matrix composite includes applying a tackifier compound to a fiber preform. The tackifier compound includes inorganic filler particles. The method further includes modifying the tackifier compound such that the inorganic filler particles remain interspersed throughout the fiber preform, and occupy pores of fiber preform.
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