Abstract: Advanced environmental barrier coating bond coat systems with higher temperature capabilities and environmental resistance are disclosed. These bond coat systems can be applied to ceramic substrates such as SiC/SiC ceramic matrix composite substrates, and can provide protection from extreme temperature, mechanical loading and environmental conditions, such as in high temperature gas turbines. Example bond coat systems can include either an advanced silicon/silicide component, an oxide/silicate component, or a combination thereof.

Abstract: The invention consists of radiation shielding materials for shielding in the most structurally robust combination against galactic cosmic radiation (GCR), neutrons, and solar energetic particles (SEP). Materials for vehicles, space structures, habitats, landers, rovers, and spacesuits must possess functional characteristics of radiation shielding, thermal protection, pressure resistance, and mechanical durability. The materials are tailored to offer the greatest shielding against GCR, neutrons, and SEP in the most structurally robust combination, also capable of shielding against micrometeoriod impact. The boron nitride nanotube (BNNT) is composed entirely of low Z atoms (boron and nitrogen).

Abstract: A capsulation satellite module for transferring a payload by an earth-launch vehicle to an outer space. The capsulation satellite module comprises a casing defining a hermetically sealed inner cavity therewithin. The casing includes a continuous sidewall and first and second cover assemblies mounted to axially opposite sides of the sidewall so as to delimit the hermetically sealed inner cavity within the casing. The first cover assembly defines a first gas chamber therein extending over the inner cavity of the casing. The second cover assembly defines a second gas chamber therein extending over the inner cavity of the casing. Each of the first gas chamber and the second gas chamber are fluidly connected to the sealed inner cavity and to each other through the sealed inner cavity to maintain predetermined pressure and temperature within the cavity.

Abstract: A system and method of analyzing an engine model is disclosed. The system and method include performing a Dynamic Systems Analysis on the engine model that includes modifying a transient allowance of the engine model to determine an optimal balance between performance and operability and assessing the conservatism level of the engine model.

Abstract: An engineered matrix is provided to blunt and self-heal matrix cracks to reduce oxygen ingress into a fiber reinforced composite.

Abstract: Aerogels, aerogel composites and methods of making the same are discussed. One example method can include the act of creating a boehmite colloid and adding a hydrolyzed silicon precursor to form a sol. A reinforcement can be infused with the sol and dried to form an aerogel composite. Such a method can also include the acts of performing one or more solvent exchanges and subjecting the gel composite to supercritical drying. Additionally, such a method can include the act of heat treating the aerogel composite. The aerogel composite can be used in high temperature, flexible seals capable of withstanding temperatures, pressures, and compression levels associated with aerodynamic heating generated during flight and in aerospace applications.

Abstract: A double-fed oscillating linear alternator is provided that includes two concentric Halbach type arrays, one stationary and one movable, that do not require magnets or iron laminations to create a strong magnetic field between the two arrays where the movable array oscillates in a linear motion with respect to the stationary array. The two arrays are manufactured from magnet-less and iron-less conductive material using additive manufacturing techniques.

Abstract: The present invention relates to a slot clock generator for high data rate pulse position modulation (PPM), including: a set of clocks with predetermined frequencies that are mutually prime in pairs, the set of clocks which synthesizes and accumulates changes in clock states at a rate corresponding to a slot rate that is greater than a slot rate of any single clock in the set.

Abstract: An axially sealing plug may not require modification of a hole being sealed in a tube or pipe. The plug may only require an axial load for activation (not torque), work independently of temperature, require no explosives, and be lightweight and compact. The plug may include a housing or a seal cup that includes at least one tooth on an outer surface and a ramp on an inner surface. The plug may also include a ferrule including a beveled, curved, or chamfered lower end. The ferrule is configured to be inserted inside the housing or seal cup.

Abstract: A radio frequency identification (RFID) system includes an RFID interrogator configured for generating an RFID signal, wherein a channel frequency of the RFID signal changes over time; at least one single feed patch antenna; and at least one single feed line configured for feeding the signal to the corresponding at least one single feed patch antenna. The single feed patch antenna is configured to transmit an electromagnetic wave in response to and at the channel frequency of the RFID signal such that the electromagnetic wave exhibits (1) a polarization tilt angle that varies depending on the channel frequency of the signal, (2) a substantially linear polarization at all channel frequencies of the signal within the given operational bandwidth, and (3) a range of polarization tilt angles across the given operational bandwidth that spans at least 70 degrees within a single quadrant. A method for frequency multiplexing includes similar components.

Abstract: A multi-tone multi-band tunable millimeter-wave synthesizer is provided. In some embodiments, the multi-tone multi-band tunable millimeter-wave synthesizer is configured to simultaneously generate multiple frequency tones for space-borne beacon transmitter for atmospheric radio wave propagation studies. The apparatus includes a comb generator, which puts out evenly spaced harmonic frequencies of the input signal, which are coherent, tunable, and the number of tones or combs is scalable over a wide range of frequencies. These harmonics or tones are amplified to the power level needed for radio wave propagation studies. The amplified signals are transmitted as beacon signals from a satellite to a ground receiving station.

Abstract: A thin micro-multilayer electrical insulator having a plurality of layers of polymeric materials is high performance and lightweight. The insulator provides a structured material with improved dielectric strength and partial corona discharge resistance that can be used in high voltage and high temperature applications. The durable insulator is well suited for use in insulating high voltage aircraft wiring and power transmission composites in hybrid and all electric airplanes. The insulator can have multiple layers of different polymeric materials such as fluorine-containing polymers and polyimides.

Abstract: Use of a single alloy conductor to form simultaneous ohmic contacts (SOC) to n- and p-type 4H—SiC. The single alloy conductor also is an effective diffusion barrier against gold (AU) and oxygen (O2) at high temperatures (e.g., up to 800° C.). The innovation may also provide an effective interconnecting metallization in a multi-level metallization device scheme.

Abstract: A contactless radio frequency (RF) probe. The RF probe includes a dielectric substrate, at least one waveguide comprising an electric field configured to increase the coupling between the dielectric substrate and the at least one waveguide, and an air gap separating the dielectric substrate and the at least one waveguide to prevent thermal loading, thermal expansion, and material deformity.

Abstract: A thermal management system for an aircraft is provided that includes thermo-acoustic engines that remove and capture waste heat from the aircraft engines, heat pumps powered by the acoustic waves generated from the waste heat that remove and capture electrical component waste heat from electrical components in the aircraft, and hollow tubes disposed in the aircraft configured to propagate mechanical energy to locations throughout the aircraft and to transfer the electrical component waste heat back to the aircraft engines to reduce overall aircraft mass and improve propulsive efficiency.

Abstract: Systems, methods, and other embodiments associated with multi-phase ceramic composites are described herein. Specifically, a multi-phase ceramic composite having a microstructure having at least one solid-state lubricant phase and at least one wear resistant material phase.

Abstract: A process of fabrication and the resulting microelectronic device that realizes metal features with larger lateral areas to maintain damage-free integrity over larger temperature ranges. The process and device enable the realization of highly durable extreme-environment microelectronic integrated circuits with increased functional capability, including realization of larger-area on-chip integrated metal-insulator-metal capacitor devices.

Abstract: The present invention relates to a high resolution additive manufacturing method, including: creating a rigid shell of a stable material on all surfaces except for a sprue of a three dimensional (3D) polymer part using a chemical vapor deposition (CVD) process which includes: depositing the stable material at a process temperature of 100° C. or less, and operating at, or near, atmospheric pressure; and removing the 3D polymer part by accessing the inside of the rigid shell through the sprue to allow dissolution of the 3D polymer part, thereby leaving a replicated rigid shell of the stable material.

Abstract: An electro hydrodynamic pump apparatus includes a cartridge body member that includes an interior cavity portion and openings on either end of the cartridge body member. A first electrode member is disposed within the interior cavity portion of the cartridge body member. The first electrode member includes a conductive bar member which has a plurality of spaced apart elements extending therefrom. A second electrode member is also disposed within the interior cavity portion of the cartridge body member. The second electrode member also includes a conductive bar with a plurality of spaced apart elements extending therefrom. The elements of the first electrode member are configure to be interspersed with the elements of the second electrode member when the first electrode member and the second electrode member are disposed within the interior cavity portion of the cartridge body member.

Abstract: Broadband acoustic absorbers may be capable providing good absorption performance between 0 and 3,000 Hz, and particularly below 1,000 Hz. Reeds may be incorporated in a single layer, multiple layers, or bundles. Such broadband acoustic absorbers may be applied for acoustic absorption in aircraft, spacecraft, residential and commercial buildings, vehicles, industrial environments, wind tunnels, or any other suitable environment or application where noise reduction is desired.