公开(公告)号：US20240300141A1

公开(公告)日：2024-09-12

申请号：US18118448

申请日：2023-03-07

Applicant: Raytheon Technologies Corporation

Inventor： Brendan Lenz ,  Mary Colby ,  Andrew Joseph Lazur ,  Lane M. Thornton ,  Daniel P. Preuss

IPC: B28B7/00

CPC classification number: B28B7/0029

Abstract: A tooling fixture suitable for use in infiltrating a fibrous preform with a flow of reactant gas includes an outer surface and an inner surface defining a thickness therebetween, and a plurality of holes extending through the thickness of the tooling fixture. The plurality of holes includes a first hole having cylindrical geometry with a first pair of dimensions comprising a first length and a first diameter, a second hole having cylindrical geometry with a second pair of dimensions comprising a second length and a second diameter, and a third hole having cylindrical geometry with a third pair of dimensions comprising a third length and a third diameter. At least one dimension of the first pair of dimensions is different from at least one dimension of the second pair of dimensions, and at least one dimension of the second pair of dimensions is different from at least one dimension of the third pair of dimensions.

公开(公告)号：US20240109223A1

公开(公告)日：2024-04-04

申请号：US17957558

申请日：2022-09-30

Applicant: Raytheon Technologies Corporation

Inventor： Brendan Lenz

IPC: B28B11/00 ,  C04B35/634 ,  C04B35/638 ,  C04B35/80

CPC classification number: B28B11/00 ,  C04B35/63416 ,  C04B35/6342 ,  C04B35/638 ,  C04B35/80 ,  C04B2235/5244 ,  C04B2235/5252

Abstract: A tooling assembly for perforating a fibrous preform comprises a tooling fixture comprising a plurality of receiving holes, and a spiked array comprising a plate and a plurality of metallic spikes projecting away from the plate and toward the tooling fixture, each of the plurality of metallic spikes corresponding to and extending towards one of the plurality of receiving holes. The spiked array is engageable with the tooling fixture such that the plurality of spikes extend at least partially into respective ones of the plurality of receiving holes.

公开(公告)号：US12157704B2

公开(公告)日：2024-12-03

申请号：US18084932

申请日：2022-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Brendan Lenz ,  Evan B. Callaway

IPC: C04B35/628 ,  C04B35/80 ,  C04B41/00 ,  C04B41/45 ,  C04B41/48 ,  C04B41/50

Abstract: A method of forming a ceramic matrix composite (CMC) comprises applying a boron nitride (BN) aerogel to a fibrous material to form a pretreated fibrous material, depositing, using chemical vapor infiltration (CVI), a BN interface coating (IFC) on the pretreated fibrous material, and depositing a matrix on the BN IFC and the pretreated fibrous material.

公开(公告)号：US20240335978A1

公开(公告)日：2024-10-10

申请号：US18296633

申请日：2023-04-06

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Brendan Lenz ,  John D. Riehl

IPC: B28B1/42 ,  B28B11/04 ,  B28B11/14 ,  F01D5/28 ,  F01D11/08

CPC classification number: B28B1/42 ,  B28B11/04 ,  B28B11/14 ,  F01D5/282 ,  F01D11/08 ,  F05D2230/90 ,  F05D2300/6033

Abstract: A method includes laying-up a fabric made of ceramic tows to form a fiber preform that has a repeating pattern of seal arc sections, densifying the fiber preform with a ceramic matrix material to form a densified ceramic matrix composite body, and then either before or after the densifying, cutting the fiber preform or the densified ceramic matrix composite body, respectively, along boundaries between the seal arc sections to separate the seal arc segments from each other.

公开(公告)号：US20230407532A1

公开(公告)日：2023-12-21

申请号：US17842700

申请日：2022-06-16

Applicant: Raytheon Technologies Corporation

Inventor： Brendan Lenz

IPC: D03D15/242 ,  D03D15/40 ,  C04B35/10 ,  C04B35/565 ,  C04B41/45 ,  D06M11/74 ,  D06M11/58 ,  D06M11/46

CPC classification number: D03D15/242 ,  D03D15/40 ,  C04B35/10 ,  C04B35/565 ,  C04B41/4531 ,  D06M11/74 ,  D06M11/58 ,  D06M11/46 ,  C04B2235/3217 ,  C04B2235/3826

Abstract: A method of preparing a fibrous preform for use in a ceramic matrix composite comprises coiling a serving yarn around a ceramic tow to form a served tow, the serving yarn comprising a polymer material with embedded ceramic particles, incorporating the served tow into a woven fabric, the woven fabric comprising a plurality of served tows, and removing the polymer material of the serving yarn such that the embedded ceramic particles remain in the woven fabric.

公开(公告)号：US20240391837A1

公开(公告)日：2024-11-28

申请号：US18200185

申请日：2023-05-22

Applicant: Raytheon Technologies Corporation

Inventor： Zachary Paul Konopaske ,  John D. Riehl ,  Andrew Joseph Lazur ,  Brendan Lenz

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/634 ,  C04B35/64 ,  D04C3/40

Abstract: A system for forming a braided preform includes a mandrel having a rotational axis, the mandrel being translatable along and rotatable about the rotational axis, a radial braider for winding fibers onto the mandrel to form a braided layer, an applicator for applying a polymer binder to the braided layer while mounted on the mandrel, and a debulking tool for debulking the braided layer while mounted on the mandrel.

公开(公告)号：US20240300863A1

公开(公告)日：2024-09-12

申请号：US18118460

申请日：2023-03-07

Applicant: Raytheon Technologies Corporation

Inventor： Daniel P. Preuss ,  Andrew Joseph Lazur ,  Brendan Lenz ,  Lane M. Thornton ,  Mary Colby

IPC: C04B41/45

CPC classification number: C04B41/4529 ,  C04B41/457 ,  C04B41/4584 ,  C04B2235/614

Abstract: A tooling fixture suitable for use in infiltrating a fibrous preform with a flow of reactant gas includes at least one wall. The at least one wall includes an outer surface and opposing inner surface defining a thickness therebetween, and a plurality of holes extending through the thickness. Each hole of the plurality of holes includes an inlet at the outer surface, an outlet at the inner surface, a transition point between the inlet and the outlet, and a first corner defined by the outer surface and the inlet. An angle of the first corner is less than 90 degrees, each hole of the plurality of holes has a first diameter at the inlet and a second diameter at the outlet, and the second diameter is less than the first diameter.

公开(公告)号：US20240199498A1

公开(公告)日：2024-06-20

申请号：US18084932

申请日：2022-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Brendan Lenz ,  Evan B. Callaway

IPC: C04B35/628 ,  C04B35/80 ,  C04B41/00 ,  C04B41/45 ,  C04B41/48 ,  C04B41/50

CPC classification number: C04B35/62868 ,  C04B35/80 ,  C04B41/0072 ,  C04B41/4584 ,  C04B41/4869 ,  C04B41/5059 ,  C04B2235/3826 ,  C04B2235/386 ,  C04B2235/614 ,  C04B2235/616

Abstract: A method of forming a ceramic matrix composite (CMC) comprises applying a boron nitride (BN) aerogel to a fibrous material to form a pretreated fibrous material, depositing, using chemical vapor infiltration (CVI), a BN interface coating (IFC) on the pretreated fibrous material, and depositing a matrix on the BN IFC and the pretreated fibrous material.

公开(公告)号：US20230391680A1

公开(公告)日：2023-12-07

申请号：US18202640

申请日：2023-05-26

Applicant: Raytheon Technologies Corporation

Inventor： Evan B. Callaway ,  Brendan Lenz

IPC: C04B35/80 ,  C04B35/628 ,  C04B41/00

CPC classification number: C04B35/80 ,  C04B35/62886 ,  C04B35/62884 ,  C04B41/009 ,  C04B2235/5256 ,  C04B2235/5244 ,  C04B2235/3826 ,  C04B2235/614

Abstract: A method of preparing a fibrous preform for use in a ceramic matrix composite comprises arranging the preform from a woven ceramic material, the preform comprising a pair of opposing outer surfaces and a midplane disposed between the pair of opposing outer surfaces, and perforating the preform with a spiked array to form a perforated preform. The perforated preform comprises a plurality of hourglass-shaped voids extending through a thickness of the preform.

公开(公告)号：US20240400467A1

公开(公告)日：2024-12-05

申请号：US18205079

申请日：2023-06-02

Applicant: Raytheon Technologies Corporation

Inventor： John D. Riehl ,  Brendan Lenz ,  Zachary Paul Konopaske ,  Olivier H. Sudre ,  Nil Parikh ,  Sarah Annette Frith

IPC: C04B41/87 ,  C04B35/622 ,  C04B41/45 ,  C04B41/50

Abstract: A method of forming a ceramic matrix composite includes preparing a plurality of fibrous ceramic plies by applying a binder solution loaded with ceramic particles to each of a first subset of plies, and applying the binder solution without ceramic particles to each of a second subset of plies. The method further includes arranging the plurality of plies to form a preform with a gradient along a thickness direction of the preform by stacking the first subset of plies to form a first zone of the preform, and stacking individual ones of the second subset of the plies on both sides of the first zone to form a second zone on each side of the first zone. Loading of the ceramic particles is higher in the first zone than in the second zones. The method further includes densifying the preform with a ceramic matrix.