公开(公告)号：US12017379B2

公开(公告)日：2024-06-25

申请号：US17645190

申请日：2021-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Andrew J. Lazur

IPC: B28B3/00 ,  B28B1/42 ,  B28B1/52 ,  B28B3/12 ,  B28B23/04

CPC classification number: B28B3/126 ,  B28B1/42 ,  B28B1/522 ,  B28B23/04

Abstract: A method of preparing a ceramic fabric for use in a ceramic matrix composite includes transforming a ceramic tow from a first tow geometry to a second tow geometry, thereby reducing a first dimension of the ceramic tow and increasing a second dimension of the ceramic tow orthogonal to the first dimension to produce a flattened tow. The method includes weaving or braiding the flattened ceramic tow to form a ceramic fabric.

公开(公告)号：US20230227366A1

公开(公告)日：2023-07-20

申请号：US17823313

申请日：2022-08-30

Applicant: Raytheon Technologies Corporation

Inventor： Evan Benjamin Callaway ,  Brendan M. Lenz ,  Kathryn S. Read ,  Sarah A. Frith ,  Olivier H. Sudre

IPC: C04B35/565 ,  C04B35/80 ,  C04B41/00 ,  C04B41/87 ,  C04B41/50

CPC classification number: C04B35/565 ,  C04B35/80 ,  C04B41/009 ,  C04B41/87 ,  C04B41/5025 ,  C04B2235/5436 ,  C04B2235/5244

Abstract: A method for manufacturing ceramic matrix composites (CMC) and CMCs made by the method are disclosed. The method can be a manual process or an automated process, such as using a robotic system, that is used for controlled delivery of ceramic particles in a CMC fabric. The method includes identifying voids present between adjacent tows of the CMC fabric and dispensing ceramic particles into the voids. Applying the ceramic particles in the center of the voids reduces the size and volume fraction of the voids/defects, improving the homogeneity of surface texture of the preform, homogeneity of microstructure, and part model shape conformity. The method for manufacturing CMCs creates CMCs having a homogenous distribution of small pores after matrix formation that improves the interlaminar mechanical and thermal properties of the CMCs.

公开(公告)号：US20230192563A1

公开(公告)日：2023-06-22

申请号：US18084002

申请日：2022-12-19

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Tyler G. Vincent ,  Richard Wesley Jackson, III

IPC: C04B35/80 ,  C23C16/04 ,  C23C16/32 ,  C04B35/628 ,  C04B35/657

CPC classification number: C04B35/80 ,  C23C16/045 ,  C23C16/325 ,  C04B35/62863 ,  C04B35/62894 ,  C04B35/62892 ,  C04B35/62884 ,  C04B35/62886 ,  C04B35/657 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5252 ,  C04B2235/404 ,  C04B2235/408 ,  C04B2235/614 ,  C04B2235/616 ,  C04B2235/9607

Abstract: Disclosed herein is a ceramic matrix composite comprising a preform comprising a plurality of plies; a ceramic matrix encompassing the plies and distributed through the plies; and thermally conducting particles distributed through the ceramic matrix. Disclosed herein is a method comprising distributing thermally conducting particles between plies in a preform; infiltrating chemical vapors of a ceramic precursor into the plies; and reacting the ceramic precursor to form a matrix.

公开(公告)号：US20230159397A1

公开(公告)日：2023-05-25

申请号：US17530953

申请日：2021-11-19

Applicant: Raytheon Technologies Corporation

Inventor： Shaun M. Enos ,  Kathryn S. Read ,  Zachary P. Konopaske

IPC: C04B35/80 ,  F02C7/00 ,  C04B35/628

CPC classification number: C04B35/80 ,  F02C7/00 ,  C04B35/62892 ,  C04B35/62886 ,  F05D2220/32 ,  F05D2300/6033 ,  C04B2235/5256 ,  C04B2235/5445 ,  C04B2235/5436 ,  C04B2235/616

Abstract: A method of making a ceramic matrix composite component includes forming a ceramic matrix composite component by infiltrating an array of ceramic-based reinforcements with a ceramic-based matrix, applying filler particles to a surface of the ceramic matrix composite component such that the filler particles fill in gaps between adjacent ones of the ceramic-based reinforcements, and infiltrating the filler particles with a filler matrix. A ceramic matrix composite component is also disclosed.

公开(公告)号：US20230145812A1

公开(公告)日：2023-05-11

申请号：US17556416

申请日：2021-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read

IPC: C04B35/80 ,  C04B35/628

CPC classification number: C04B35/80 ,  C04B35/62844 ,  C04B2235/5256 ,  C04B2235/5244 ,  C04B2235/6028

Abstract: A ceramic fiber preform includes a plurality of ceramic fiber plies arranged to define a wall, a void adjacent the wall, and an insert positioned within the void. The insert includes a first region having a first porosity and a second region in physical contact with the first region and having a second porosity. The first region and second region are formed from a woven ceramic material, the wall has a wall porosity, and the first porosity is less than at least one of the second porosity and the wall porosity.

公开(公告)号：US20230026977A1

公开(公告)日：2023-01-26

申请号：US17385271

申请日：2021-07-26

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Kathryn S. Read ,  Raymond Surace

IPC: F01D5/08 ,  F01D5/28

Abstract: An assembly for a gas turbine engine according to an example of the present disclosure includes at least one platform having a main body extending between a first mate face and a second mate face to establish a gas path surface. The main body has an internal passage extending circumferentially between a first opening along the first mate face and a second opening along the second mate face relative to an assembly axis. A perimeter of the first mate face establishes a first area, a perimeter of the second opening establishes a second area, and the second area is greater than the first area. An airfoil section extends radially from the at least one platform.

公开(公告)号：US20240376017A1

公开(公告)日：2024-11-14

申请号：US18196594

申请日：2023-05-12

Applicant: Raytheon Technologies Corporation

Inventor： Christian X. Campbell ,  Kathryn S. Read ,  James T. Roach ,  Robert A. White, III ,  Daniel Josiah Whitney

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/64 ,  C04B35/657

Abstract: A method of forming a ceramic matrix composite includes fabricating a space filling insert by assembling the space filling insert from a fibrous ceramic material, placing the space filling insert into a tooling fixture, the tooling fixture having an internal shape complementary to a shape of the insert, and infiltrating the space filling insert with a first ceramic material. The method further includes forming a preform by laying up a plurality of fibrous ceramic plies and inserting the infiltrated space filling insert into a void defined by the plurality of plies. The method further includes infiltrating the preform with a second ceramic material.

公开(公告)号：US20230373872A1

公开(公告)日：2023-11-23

申请号：US18105003

申请日：2023-02-02

Applicant: Raytheon Technologies Corporation

Inventor： Ying She ,  Andrew J. Lazur ,  Kathryn S. Read

IPC: C04B41/87 ,  C04B35/565

CPC classification number: C04B41/87 ,  C04B35/565 ,  C04B2235/5212 ,  C04B2235/5244

Abstract: A method for forming ceramic matrix composite (CMC) component includes forming a fiber preform, positioning the fiber preform into a chemical vapor infiltration reactor chamber, and densifying the fiber preform. Densification includes infiltrating the fiber preform with a first gas comprising precursors of silicon carbide and infiltrating the fiber preform with a second gas comprising a first rare earth element, wherein the steps of infiltrating the fiber preform with the first gas and infiltrating the fiber preform with the second gas are conducted simultaneously to produce a first rare earth-doped silicon carbide matrix in a first region of the component.

公开(公告)号：US11820715B2

公开(公告)日：2023-11-21

申请号：US17239310

申请日：2021-04-23

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Kathryn S. Read

IPC: B33Y10/00 ,  C04B35/565 ,  B33Y80/00 ,  B28B1/00 ,  F01D5/18 ,  F01D9/04 ,  F01D25/12 ,  C04B35/111 ,  C04B35/48 ,  C04B35/80 ,  C04B38/08 ,  B33Y40/20

CPC classification number: C04B35/565 ,  B28B1/001 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  C04B35/111 ,  C04B35/48 ,  C04B35/80 ,  C04B38/08 ,  F01D5/186 ,  F01D9/041 ,  F01D25/12 ,  F05D2220/32 ,  F05D2230/20 ,  F05D2240/12 ,  F05D2240/301 ,  F05D2240/55 ,  F05D2300/2112 ,  F05D2300/2118 ,  F05D2300/2261 ,  F05D2300/6033 ,  C04B38/00 ,  C04B35/80

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.

公开(公告)号：US20230151740A1

公开(公告)日：2023-05-18

申请号：US18097397

申请日：2023-01-16

Applicant: Raytheon Technologies Corporation

Inventor： Thomas E. Clark ,  Daniel J. Whitney ,  Kathryn S. Read ,  Andrew J. Lazur ,  William M. Barker

IPC: F01D11/12 ,  B28B1/00 ,  F01D25/12

CPC classification number: F01D11/12 ,  B28B1/002 ,  F01D25/12 ,  F05D2230/20 ,  F05D2240/11 ,  F05D2260/20 ,  F05D2300/20

Abstract: A fiber-reinforced component for use in a gas turbine engine includes a first braided fiber sleeve forming a cooling channel and a plurality of fiber plies enclosing the first braided fiber sleeve, with the plurality of fiber plies forming first and second walls separated by the first braided fiber sleeve. The fiber-reinforced component further includes a matrix material between fibers of the braided fiber sleeve and the plurality of fiber plies.