The Boeing Company

Hrl Laboratories, LLC

Mark O'Masta

Christopher Stephen Roper

Tobias A Schaedler

Jacob Michael Hundley

Phuong Bui

Zak C Eckel

Eddie Kwon

Darrin Michael Hansen

Jason Scott Damazo

Philipp Andreas Boettcher

Randall C Schubert

Tiffany A Stewart

Tony Koung

Morgan A Stilke

Florian G Herrault

Kevin Geary

Minh B Nguyen

Haftom Y Dessalegn

Kenneth Cante

Kayleigh A Porter

Alvin Escobar

Some variations provide a pre-ceramic matrix composite comprising: a precursor pre-ceramic matrix; reinforcing elements disposed within the precursor pre-ceramic matrix; and a compressible material disposed on the surface of the reinforcing elements and interposed between the reinforcing elements and the precursor pre-ceramic matrix. Other variations provide a ceramic matrix composite comprising: a ceramic matrix; reinforcing elements disposed within the ceramic matrix; and a compressed material disposed on the surface of the reinforcing elements and interposed between the reinforcing elements and the matrix. The coating of compressible material prevents cracking during processing because the coating absorbs stresses associated with volumetric shrinkage of the ceramic matrix during densification, thereby reducing the stresses at the interface between the reinforcing elements and the ceramic matrix. Methods of fabricating ceramic matrix composites using the principles of the invention are disclosed. Methods include pyrolysis of pre-ceramic polymers, sintering of pre-ceramic materials, and sol-gel processing.

Compressible coating reinforcements for ceramic matrix composites, and methods of making the same

A device which is attachable to a fastener stack, the device comprising: an attachment element made of shape memory material; and a cap comprising a base having an aperture and a shell having an interior space in fluid communication with the opening, wherein the base supports the shell and is coupled to the attachment element.

Attachment of ignition suppression or quenching device to a fastener stack

An interposer for a curved detector. In some embodiments a system includes a curved array photodetector; a first readout integrated circuit, the first readout integrated circuit being substantially flat; and an interposer, between the photodetector and the first readout integrated circuit. The photodetector and the first readout integrated circuit may each have a plurality of electrical contacts. The interposer may include a first conductor connecting a first contact, of the plurality of electrical contacts of the photodetector, and a second contact, of the plurality of electrical contacts of the first readout integrated circuit.

Interposer for curved detector

An ignition-suppressing device () for shielding fasteners () comprises a ribbon () and receptacles () that are spaced apart from one another along the ribbon ().

Ignition-suppressing devices for shielding fasteners, aircraft fuel tanks having fasteners shielded by ignition-suppressing devices, and methods of installing ignition-suppressing devices in aircraft fuel tanks

Some variations provide a leading-edge heat pipe comprising: (a) an envelope fabricated from a shell material, wherein the envelope includes at least one edge with a radius of curvature of less than 3 mm, and wherein the envelope includes, or is in thermal communication with, at least one heat-rejection surface; (b) a porous wick fabricated from a ceramic or metallic wick material, wherein the porous wick is configured within a first portion of the interior cavity, wherein at least a portion of the porous wick is adjacent to the inner surface, and wherein the porous wick has a bimodal pore distribution comprising an average capillary-pore size from 0.2 microns to 200 microns and an average high-flow pore size from 100 microns to 2 millimeters (the average high-flow pore size is greater than the average capillary-pore size); and (c) a phase-change heat-transfer material contained within the porous wick.

Method of making hypersonic leading-edge heat pipe with porous wick

Hypersonic leading-edge heat pipe with porous wick, and methods of making and using the same

A fire retardant (FR) composite composition, including a liquid polymer, wherein the liquid polymer includes a photopolymer including at least two of a first molecule, a second molecule, and a third molecule, a FR thermoset, and a photoinitiator.

FR composite composition for light-based additive manufacturing

An ignition-suppressing tape for sealing cut edges of polymer panels, the tape having a backing strip and a sealant strip that is disposed on a portion of a surface of the backing strip, and a pressure sensitive adhesive is disposed on other portions of the same surface of the backing strip.

Ignition-suppressing tape and method of installation

A sandwich structure configured to be secured with a mechanical fastener includes a core assembly, which includes a polymer component configured for supporting a mechanical fastener connector insert. The core assembly further includes an open cellular component formed from a plurality of self-propagating photopolymer waveguides positioned around the polymer component, wherein a first portion of the plurality of self-propagating photopolymer waveguides is secured to and extends from the polymer component. Further included is a first face sheet secured to a first side of the core assembly, wherein the first portion of the plurality of self-propagating photopolymer waveguides has a distal end spaced apart from the polymer component and secured to the second face sheet.

Integrated fastener insert for open cellular sandwich structure and method to install

A cover that extends over a fastener and methods of installing the cover over the fastener. The cover includes an open end positioned at a member from which the fastener extends. The cover also includes a closed end that extends over the fastener and shields the fastener from the exterior environment that can be combustible. A plurality of holes extend through the cover from the interior space to an exterior environment external to the cap.

Combustion quenching fastener caps with holes

A cover that extends over a fastener and methods of installing the cover over the fastener. The cover includes an open end positioned at a member from which the fastener extends. The cover also includes a closed end that extends over the fastener and shields the fastener from the exterior environment that can be combustible. The cover includes an outer shell with one or more windows. An inner shell is positioned within the outer shell. The inner shell includes one or more windows that are offset from the windows of the outer shell. One or more flow paths extend through the windows for gas, liquid, and/or some particles to flow through the cover while removing the thermal and/or kinetic energy that may ignite the combustible exterior environment.

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Oak Park, CA, United States of America

Mark O'Masta