公开(公告)号：US20230191656A1

公开(公告)日：2023-06-22

申请号：US17645190

申请日：2021-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Andrew J. Lazur

IPC: B28B3/12 ,  B28B1/52 ,  B28B1/42 ,  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：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：US20230193772A1

公开(公告)日：2023-06-22

申请号：US17557224

申请日：2021-12-21

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  John D. Riehl ,  Andrew J. Lazur ,  Robin H. Fernandez ,  Paul F. Croteau ,  Gajawalli V. Srinivasan ,  Ashley A. Smith

IPC: F01D9/06 ,  B23K26/382 ,  B23K26/146 ,  B23B35/00 ,  G06F30/20

CPC classification number: F01D9/065 ,  B23K26/389 ,  B23K26/146 ,  B23B35/00 ,  G06F30/20 ,  F05D2220/32 ,  F05D2230/13 ,  B23K2103/52

Abstract: A method of machining cooling holes includes providing a workpiece in which a cooling hole is to be formed. The cooling hole, once formed, defines distinct first and second sections. The workpiece is secured in a fixture that is mounted in a first machine. In the first machine, a laser is used to drill a through-hole in a wall of the workpiece. The through-hole is spatially common to the first and second sections of the cooling hole. After drilling the through-hole, the fixture with the workpiece secured therein is removed from the first machine and mounted in a second machine. In the second machine, ultrasonic machining is used to expand a portion of the through-hole to form the second section. An abrasive slurry used in the process is drained through the through-hole during the ultrasonic machining.

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.

公开(公告)号：US20220388913A1

公开(公告)日：2022-12-08

申请号：US17339190

申请日：2021-06-04

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Andrew J. Lazur

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/634 ,  B05D1/32 ,  B05D1/12 ,  C23C16/02

Abstract: A method of forming a ceramic matrix composite component includes forming a fiber preform, the fiber preform including a plurality of ceramic fiber plies, a non-reduced fiber region having an areal weight, and a reduced fiber region characterized by a reduced areal weight less than the areal weight of the non-reduced fiber region by at least 5 percent. The method further includes selectively applying ceramic particles to the reduced fiber region in such manner as to avoid applying the ceramic particles to the non-reduced fiber region, and subsequently densifying the preform.

公开(公告)号：US20210276922A1

公开(公告)日：2021-09-09

申请号：US17328213

申请日：2021-05-24

Applicant: Raytheon Technologies Corporation

Inventor： Xia Tang ,  James T. Beals ,  Richard Wesley Jackson ,  Ying She ,  Andrew J. Lazur ,  Kathryn S. Read ,  Mary Colby

IPC: C04B35/571 ,  C04B35/628 ,  C04B41/50

Abstract: A method for forming a self-healing ceramic matrix composite (CMC) component includes depositing a first self-healing particulate material in a first region of a CMC preform of the CMC component and depositing a second self-healing particulate material having a different chemical composition than the first self-healing particulate material in a second region of the CMC preform distinct from the first region.