Abstract: A photo-curable liquid composition for additive manufacturing of silicon-containing carbide ceramic includes a polymethylvinylsilane (PMVS) resin that has photo-reactivity over a first photo-wavelength absorption range and a photo-initiator additive mixed with the PMVS resin. The photo-initiator additive has photo-reactivity over a second photo-wavelength absorption range that has an overlapping wavelength range with the first photo-wavelength absorption range. The PMVS and the photo-initiator additive are reactive to polymerize upon exposure to radiation having a wavelength in the overlapping wavelength range.

Abstract: A brake component is disclosed. In various embodiments, the brake component includes a ceramic matrix composite (CMC) structure including a plurality of nominally dense plies, interleaved with a plurality of interlayers, wherein the plurality of nominally dense plies and the plurality of interlayers are bonded by at least one of a Field Assisted Sintering Technique (FAST), a Spark Plasma Sintering (SPS) process, or a localized heating process. In various embodiments, the brake component is a rotor disk or a stator disk.

Abstract: Disclosed is a method of making high temperature fiber including chemically bonding high temperature material to a fiber template at a first temperature to form a precursor fiber and processing the precursor fiber at a second temperature to form the high temperature fiber. The first temperature does not equal the second temperature. Also disclosed are high temperature fibers made by the method.

Abstract: Disclosed is a modified preceramic polymer having a polymer backbone consisting of silicon or a combination of silicon and carbon; and a pendant modifier bonded to the backbone wherein the modifier includes silicon, boron, aluminum, a transition metal, a refractory metal, or a combination thereof. The modified preceramic polymer can be used to form a ceramic matrix composite.

Abstract: Methods, systems, apparatuses, and computer program products for providing malware protection on a UAV are disclosed. In a particular embodiment, a method of providing malware protection on a UAV includes a malware defense controller initiating, on an unmanned aerial vehicle (UAV) in response to a malware defense event, a malware defense scan of at least one file stored on the UAV. In this embodiment, the malware defense controller also implements, in dependence upon a result of a malware detection analysis, a malware defense operation.

Abstract: Cellular base station antenna concealments, such as palm and tree concealments, utilize artificial branches with nonmetallic (e.g., polymeric) interfaces to avoid loose metal-to-metal connections to mitigate the generation of passive intermodulation (PIM) interference by the branches. Representative embodiments include “palm concealments” with low-PIM artificial palm fronds, and “tree concealments” with low-PIM artificial tree branches. That is, “low-PIM fronds” and “low-PIM tree branches” are two representative examples of “low-PIM branches” illustrating representative embodiments of the invention. The low-PIM palm frond includes a nonmetallic (e.g., polymeric) sleeve positioned between a metal frond shaft and a metal frond receiver. A first example of the low-PIM tree branch includes nonmetallic (e.g., polymeric) fastener isolators positioned between metal fasteners and a metal tree branch receiver. A second example of the low-PIM tree branch includes a nonmetallic (e.g.

Abstract: In a particular embodiment, coordinating an aerial search among unmanned aerial vehicles is disclosed that includes receiving, by a server in a UAV transportation ecosystem, search area data, accessing, by the server, UAV parameters for a type of UAV, determining, by the server in dependence upon the search area data and the UAV parameters, a number of UAVs needed to complete a coordinated aerial search of a search area within a time limit, and partitioning, by the server, the search area into a plurality of partitions, wherein the number of partitions is equal to the number of UAVs.

Abstract: Methods, systems, apparatuses, and computer program products for automated preflight evaluation of an unmanned aerial vehicle (UAV) configuration are disclosed. In a particular embodiment, automated preflight evaluation of an UAV configuration includes a preflight controller retrieving information about a UAV configuration selected to perform a mission in accordance with one or more mission parameters. In this embodiment, the preflight controller uses the retrieved information to assess an ability of the UAV configuration to perform the mission in accordance with the one or more mission parameters.

Abstract: Methods, systems, apparatuses, and computer program products for fulfilling a request associated with operational aspects of an unmanned aerial vehicle (UAV) mission are disclosed. In a particular embodiment, fulfilling a request associated with operational aspects of a UAV mission includes a fulfillment controller presenting to a first set of providers of a plurality of providers, a request for offers to perform a first set of operational aspects of a UAV mission. In this embodiment, the fulfillment controller also includes receiving from each provider of a second set of providers of the plurality of providers, an offer to perform a second set of operational aspects of the first set of operational aspects of the UAV mission. In addition, the fulfillment controller also selects from a first set of offers received from the second set of providers, a first offer to accept.

Abstract: A method of making an electrocaloric article is disclosed. The method includes mounting a supported electrocaloric film to a frame. The supported electrocaloric film includes an electrocaloric film and a first support film disposed on a first side of the electrocaloric film. An active area of the electrocaloric film is provided, which is not covered by the first support film on the first side of the electrocaloric film. Electrical connections are provided to electrodes disposed on opposing sides of the electrocaloric film in the active area.

Abstract: A process of forming a Si-containing ceramic comprises forming a Si-based polymeric composition. The process includes neutralizing a charge of said Si-based polymeric composition. The process includes adding thermal energy under a controlled atmosphere to the Si-based polymeric composition. A turbine engine component comprises an airfoil and the airfoil comprises a Ceramic Matrix Composite (CMC) material.

Abstract: A remote temperature measurement system for a gas turbine engine includes an optical emitter/receiver in communication with the control system and a probe system embedded within a component of the gas turbine engine, the probe system within a line-of-sight of the optical emitter/receiver, the control system operable to determine a local temperature of the component in response to optical communication with the probe system.

Abstract: A fabrication apparatus for fabricating ceramic structures of controlled size and composition is provided. The fabrication apparatus includes an additive manufacturing machine configured to dispense preceramic materials in a printed pattern, the printed pattern corresponding to the ceramic structures of the controlled size and composition, a radiation emitter configured to emit curing radiation toward the printed pattern to cure the preceramic materials and a lamp element configured to shine light on the preceramic materials to convert the preceramic materials to ceramics.

Abstract: A method of forming a bulk product includes the step of coating a particulate conductive phase material with a binder phase, and forming the coated conductive phase material into at least one of sheet stock, tape formed into a bulk material. A method of forming a bulk product includes the step of coating a particulate conductive phase material with a binder phase and forming the coated conductive phase material into a bulk material. The conductive phase material includes at least one of two dimensional materials, single layer materials, carbon nanotubes, boron nitride nanotubes, aluminum nitride and molybdenum disulphide (MoS2). A component is also disclosed.

Abstract: A lightguide comprised of a transmission medium having a first curved outer surface and a second curved outer surface and in at least one cross-section of the lightguide. The first curved outer surface and the second curved outer surface are substantially concentric around a point. The transmission medium having a gradient index of refraction that decreases as function of increasing distance from the point, the gradient index extending from the first curved surface to the second curved surface. At least one light extraction element disposed to extract light from the transmission medium and direct the light generally toward the point. Both the lightguide and the gradient index profiles may be spherical or cylindrical.

Abstract: In a particular embodiment, blockchain-based hybrid authentication is disclosed that includes receiving, by a smart contract controller, an invocation of a smart contract and accessing, by the smart contract controller, one or more parameters associated with a client account. In this embodiment, the smart contract determines whether the one or more parameters fulfill the smart contract. In response to determining that the one or more parameters fulfill the smart contract, the smart contract provides an attestation of an identity associated with the client account.

Abstract: An article includes a ceramic-based substrate and a barrier layer on the ceramic-based substrate. The barrier layer includes a matrix of barium-magnesium alumino-silicate or SiO2, a dispersion of silicon oxycarbide particles in the matrix, and a dispersion of particles, of the other of barium-magnesium alumino-silicate or SiO2, in the matrix.

Abstract: In a socket assembly having a housing with a closed end and an open end and an axially slidable and rotatable bearing, a spring washer seated on the axially slidable and rotatable bearing with a protrusion or a recess on the external periphery for engagement with a cooperating recess or protrusion on an inner cavity of the housing to effectively stop movement of spring washer with the axially slidable and rotatable bearing during driving conditions.

Abstract: A fabrication apparatus for fabricating ceramic structures of controlled size and composition is provided. The fabrication apparatus includes an additive manufacturing machine configured to dispense preceramic materials in a printed pattern, the printed pattern corresponding to the ceramic structures of the controlled size and composition, a radiation emitter configured to emit curing radiation toward the printed pattern to cure the preceramic materials and a lamp element configured to shine light on the preceramic materials to convert the preceramic materials to ceramics.

Abstract: A GRIN optic having an optical axis (z-direction) and a GRIN profile varying in the x and y-directions, the profile having one or more discontinuities extending in the x-y direction. The discontinuities may form a non-closed shape or have a non-smooth rectilinear shape. The GRIN optic may have plane-parallel surfaces. A method of designing a GRIN optic which includes mapping discretized elements in the light output specification to array elements of a linear GRIN array elements, identifying for each array element, a base refractive index n0, a gradient magnitude ?, and a gradient direction ?G capable of directing a beamlet from the light source to a corresponding location in the light output specification, and constructing a piecewise-continuous freeform GRIN profile of the GRIN optic by integrating the discrete linear GRIN array elements into a continuous refractive index profile.