Abstract: In one embodiment, a flashing system is provided for fortifying seams between a first blast, ballistic, and forced entry resistant shelter module and a second blast, ballistic, and forced entry resistant shelter module. The system includes a first side flashing assembly for fortifying a first side seam between the first blast, ballistic, and forced entry resistant shelter module and the second blast, ballistic, and forced entry resistant shelter module, a top flashing assembly for fortifying a top seam between the first blast, ballistic, and forced entry resistant shelter module and the second blast, ballistic, and forced entry resistant shelter module, and a second side flashing assembly for fortifying a second side seam between the first blast, ballistic, and forced entry resistant shelter module and the second blast, ballistic, and forced entry resistant shelter module.

Abstract: The modular anti-ballistic shelter system includes two end units and, optionally, additional middle units for a wider structure. End and middle units may also stack atop each other for multi-story structures. Each unit is configured to comply with both ISO standards for size and weight, and with the U.S. Department of State Certification Standard for Forced Entry and Ballistic Resistance of Structural Systems. Each exterior wall of each end unit and each middle unit is reinforced with wall studs that penetrate the unit's structural framework of beams and frames. Even though these wall studs are welded into place, penetration of the wall studs into the beams and frames ensures acceptable blast, ballistic, and forced entry resistance even if the welds are flawed.

Abstract: Provided among other things is an electrical device comprising: a first component that is a semiconductor or an electrical conductor; a second component that is an electrical conductor; and a strong, heat stable junction there between including an intermetallic bond formed of: substantially (a) tin (Sn) or a mixture of Sn and indium (In) thereof, and (b) substantially nickel (Ni). The junction can have an electrical contact resistance that is small compared to the resistance of the electrical device.

Abstract: An ignition system for energetics including artillery charges includes a radio frequency transmitter and a radio frequency igniter. The radio frequency igniter receives and converts radio frequency energy into heat or electrical energy for the purpose of igniting energetics, such as propellants or pyrotechnics. The radio frequency igniter may be applied to the exterior of the energetic container or may be integral to the container.

Abstract: A liquid or powder filled cartridge is used to cool and lubricate the bore of gun barrels to eliminate cook off and improve barrel life. A primer is used to rupture the nose of the cartridge and propel the cooling material into the bore. The coolant absorbs heat from the bore of the barrel and is ejected from the muzzle of the weapon. The liquid or powder may include lubricants, preservatives, antifreeze, coolants, cleaners, or mixtures thereof, or other materials to enhance barrel performance. The liquid or powder filled cartridge is particularly well suited to externally powered weapons. Ammunition may be fed into the weapon using a mix of conventional cartridges and coolant filled cartridges. Internally cooling the barrel may be used to reduce or eliminate cook off and increase barrel life.

Abstract: A system and method for synthesizing a nanoparticle material includes dissolving a metal nitrate in deionized water, adding a hydrogel precursor in the deionized water containing the dissolved metal nitrate to create an aqueous solution, heating the aqueous solution, cooling the aqueous solution to create a solid gel, and calcinating the solid gel to create a metal oxide nanoparticle material. The metal oxide nanoparticle material may include a zinc oxide-based nanoparticle material. The hydrogel precursor may include an agarose gel. The solid gel may be calcinated at approximately 600° C. The solid gel may be calcinated for approximately five hours in the presence of air. The aqueous solution may be heated to a boil. The aqueous solution may be heated at a temperature of ?100° C.

Abstract: Pressure relief holes are sized and positioned on each fin of a projectile to allow high pressure from one side of the fin due to canard and fin interaction to bleed to a low pressure area on the opposite side of the fin. The location of the pressure relief holes target pressure differences due to canard roll control downwash while not affecting pressure differences due to projectile attitude. The fin planform area remains small enough to meet packaging and fire requirements for this type of munition and large enough to aerodynamically stabilize the airframe thereby enabling a more robust pitch and yaw autopilot design.

Abstract: A pistol with a magazine angle swept backward in relation to the barrel increases the barrel length for a given pistol length without deviating from the grip ergonomics of conventional modern pistols. By angling the magazine in this manner, the muzzle velocity of a pistol may be increased for a given pistol length. Alternatively, the pistol length may be minimized for a given muzzle velocity.

Abstract: Novel metallic systems and methods for their fabrication provide high temperature machine parts formed of a consolidated nano-crystalline metallic material. The material comprises a matrix formed of a solvent metal having a melting point greater than 1,250° C. with crystalline grains having diameters of no more than about 500 nm, and a plurality of dispersed metallic particles formed on the basis of a solute metal in the solvent metal matrix and having diameters of no more than about 200 nm. The particle density along the grain boundary of the matrix is as high as about 2 nm2 of grain boundary area per particle so as to substantially block grain boundary motion and rotation and limit creep at temperatures above 35% of the melting point of the consolidated nano-crystalline metallic material. The machine parts formed may include turbine blades, gears, hypersonics, radiation shielding, and other high temperature parts.

Abstract: Embodiments of the present invention implement a novel methodology for processing radar image data from a radar system having one or more transmitter and receiver antenna pairs. The novel methodology deliberately operates on spectrally-notched radar data. It uses a specially-adapted version of the CLEAN algorithm to mitigate the effects of frequency-band notching. Following that, it performs a non-linear sidelobe-reduction algorithm to further eliminate artifacts and produce radar imagery of much higher quality. In some cases, it exploits a specific version of the recursive sidelobe minimization (RSM) algorithm which operates in the frequency and aperture (spatial) domain.

Abstract: The present invention relates to imidizo derivatives containing a plurality of imidizo moieties linked by aryl or heteroaryl groups. The resultant imidizo derivates may advantageously be used in organic electronic devices, such as multi-layer organic electroluminescent devices or organic photovoltaic devices, and in chemical sensing applications as a host material.

Abstract: A polymerizable monomer prepared by partial or complete acrylation or methacrylation of at least one epoxidized cardanol, wherein the epoxidized cardanol is formed by epoxidation of an unsaturation site of a cardanol having the formula (I) wherein R is selected from hydrogen and an alkyl, or alkenyl group having 1-6 carbon atoms, and n is 7, 10, or 13, a polymer and resin made form the polymerizable monomer, and a method of preparing such a polymer. The resin created from this monomer is suitable for moderate temperture composites and coatings applications.

Abstract: A Handle and Firing Mechanism Assembly (H&FMA) provides a robust and streamlined H&FMA for a mortar weapon system. The H&FMA is easier to assemble and eliminates jamming issues, and firing pin protrusion adjustment procedures. It also incorporates a lighter trigger squeeze in Trigger fire mode and locks the firing pin in Drop fire mode. The handle is easier and more cost effective to produce. The H&FMA can be used with, for example, a 60 mm mortar weapon system.

Abstract: A sensor system is disclosed, which includes a sensor configured to measure electromagnetic energy levels received from skin of a human subject not in contact with the sensor; a data processing unit configured to determine multiple heart rate metrics of the human subject from the electromagnetic energy levels measured by the sensor; and an output device. The output device is configured to indicate a physiological characteristic of the human subject determined from the multiple heart rate metrics of the human subject determined by the data processing unit.

Abstract: An antenna array comprising a plurality of concentric low frequency elements, where each low frequency element circumscribes a first high frequency element; and a plurality of second high frequency elements interleaved with the plurality of concentric low frequency elements to maintain optimal electrical spacing between both the low frequency elements and the high frequency elements at two disparate frequencies.

Abstract: Plasmonically enhanced electric fields are used to deposit particles at selected locations through decomposition or electron transfer reactions with precursor molecules in gas or liquid phase. The location of the enhanced electric fields is controlled through a combination of plasmonic substrate structure shape, material, incident light wavelength and polarization. The particles are deposited at designated locations only, whereby no deposition occurs at locations lacking enhanced electric fields. Many reaction variables can be used to change the rate of particle deposition such as precursor molecules, exposure time, precursor concentration, and temperature making for a highly customizable reaction space.

Abstract: The invention provides for lenses fabricated as planar thin film coatings with continuous structure. The lensing action is due to optical axis orientation modulation in the plane of the lens. The lenses of the current invention are fabricated using photoalignment of a liquid crystal polymer wherein the polarization pattern of radiation used for photoalignment is obtained by propagating the light through an optical system comprising a shape-variant nonlinear spatial light polarization modulators.

Abstract: A counter momentum generator is employed on a weapon system to manage horizontal recoil momentum of the weapon system. The counter momentum generator generates a counter momentum which that is not parallel to the recoil momentum. A horizontal component of the counter momentum negates a portion of the horizontal recoil momentum. A vertical component of the counter momentum combines with the vertical recoil momentum to aid in compression between the base of the weapon system and the ground.

Abstract: The rifle system comprises a rifle and an ammunition round for operation with the rifle. The high pressure ammunition round further comprises a cartridge case having an outer wall wherein prior to firing of the ammunition round, the outer wall geometry of the cartridge case is devoid of features configured for interfacing with a mechanical extractor. The rifle further comprising a barrel chamber which fully supports a chambered cartridge case and a rear extraction mechanism for extracting a spent cartridge case through the rear of the barrel chamber.