Abstract: A modular roundabout or traffic calming system with interlocking connectors and a method of installation utilize a plurality of boards arranged in a pattern on a ground surface at an intersection of vehicle roadways, the pattern including one or both of a central island and a splitter island. At least some of the boards forming a perimeter of the pattern are affixed to the ground surface. At least some of the boards forming interior boards are interconnected at adjacent edges with connectors. The connectors can include a hinge joint so that the interconnected boards can be folded or rolled. A kit for a modular roundabout or traffic calming system is also provided.

Abstract: A roundabout for vehicular traffic is provided from a plurality of modular blocks arranged in a generally circular roundabout pattern and affixed to a roadway or ground surface at an intersection of vehicle roadways. Roundabouts can be formed in any desired diameter. In some embodiments, the modular blocks can have a trapezoidal plan shape laid out in concentric rings. The trapezoidal shaped blocks can be cut from a length of board having a constant width and thickness. The modular blocks can be provided as a kit of parts delivered to worksite at an intersection of vehicle roadways where a roundabout is desired. Splitter islands, sidewalks, and curbing of blocks having appropriate shapes can also be provided.

Abstract: A roundabout for vehicular traffic is provided from a plurality of modular blocks arranged in a generally circular roundabout pattern and affixed to a roadway or ground surface at an intersection of vehicle roadways. Roundabouts can be formed in any desired diameter. In some embodiments, the modular blocks can have a trapezoidal plan shape laid out in concentric rings. The trapezoidal shaped blocks can be cut from a length of board having a constant width and thickness. The modular blocks can be provided as a kit of parts delivered to worksite at an intersection of vehicle roadways where a roundabout is desired. Splitter islands, sidewalks, and curbing of blocks having appropriate shapes can also be provided.

Abstract: A roundabout for vehicular traffic is provided from a plurality of modular blocks arranged in a generally circular roundabout pattern and affixed to a roadway or ground surface at an intersection of vehicle roadways. Roundabouts can be formed in any desired diameter. In some embodiments, the modular blocks can have a trapezoidal plan shape laid out in concentric rings. The trapezoidal shaped blocks can be cut from a length of board having a constant width and thickness. The modular blocks can be provided as a kit of parts delivered to worksite at an intersection of vehicle roadways where a roundabout is desired. Splitter islands, sidewalks, and curbing of blocks having appropriate shapes can also be provided.

Abstract: A modular roundabout or traffic calming system with interlocking connectors and a method of installation are provided. A plurality of boards is arranged in a pattern on a ground surface at an intersection of vehicle roadways, the pattern including one or both of a central island and a splitter island. At least some of the boards forming a perimeter of the pattern are affixed to the ground surface. At least some of the boards forming interior boards are interconnected at adjacent edges with connectors. The connectors can include a hinge joint so that the interconnected boards can be folded or rolled. A kit for a modular roundabout or traffic calming system is also provided.

Abstract: A roundabout for vehicular traffic is provided from a plurality of modular blocks arranged in a generally circular roundabout pattern and affixed to a roadway or ground surface at an intersection of vehicle roadways. Roundabouts can be formed in any desired diameter. In some embodiments, the modular blocks can have a trapezoidal plan shape laid out in concentric rings. The trapezoidal shaped blocks can be cut from a length of board having a constant width and thickness. The modular blocks can be provided as a kit of parts delivered to worksite at an intersection of vehicle road-ways where a roundabout is desired. Splitter islands, sidewalks, and curbing of blocks having appropriate shapes can also be provided.

Abstract: A composite penetrator or projectile is formed of a core of uniaxial tungsten wires embedded in a matrix material. The core may be overwrapped to improve hoop or radial strength. The core is mounted in a sabot for use as an ordnance projectile. The penetrator is frangible and can include a detonatable energetic resin to provide a self-destruct capability. A pultrusion process is provided to manufacture the penetrator.

Abstract: In a process for fabricating large structures, a composite material panel is continuously pultruded in a pultrusion die assembly and cut transversely to the process direction to provide panel sections. The panel sections can be sufficiently long to extend from one end to an opposite end of the structure. The panel sections are assembled with a joint along adjacent edges using steel-to-composite and composite-to-composite joining technology. The joints can be integrated into the panel longitudinal edges, or separate joint assemblies can be fabricated. In this manner, fewer joints are required. A variety of in-plane and out-of-plane joint assemblies are provided.

Abstract: A tiedown system foundation adapter system provides greater flexibility in spotting equipment on a support surface. An adapter module includes a plate assembly that drops into a slotted track system and is slid along the track system until it fits into an attachment point that restrains the plate assembly from vertical pullout and motion transverse to the track. The plate assembly is then locked into position to restrain it from further translation along the track. An equipment fitting is translatably mounted with respect to the upper surface and attaches to a complementary attachment fitting on the bottom of a piece of equipment. By locating a number of modules in desired locations along the tracks and locating the equipment fitting in each module, a piece of equipment can be oriented in virtually any position and location in the space to be furnished. A deck system for a flush floor is also provided.

Abstract: A buckling restrained brace includes a deformable core contained within an outer casing. Ends of the core protrude from the casing for connection to a frame or other structure. A length of the deformable core between its ends, referred to as the gauge or yielding section, is capable of deforming during an earthquake or blast loading. The gauge section is differentially heat treated from the ends so that the gauge section has a lower yield strength than the ends. The casing provides containment of the core to prevent buckling of the core. A metal foil interface or unbonding layer is provided between the deformable core and the casing so that the deformable core does not bind to the casing. The buckling restrained brace provides significant performance improvements over prior art BRBs coupled with simplified assembly.

Abstract: A buckling restrained brace includes a deformable core contained within an outer casing. Ends of the core protrude from the casing for connection to a frame or other structure. A length of the deformable core between its ends, referred to as the gauge or yielding section, is capable of deforming during an earthquake or blast loading. The gauge section is differentially heat treated from the ends so that the gauge section has a lower yield strength than the ends. The casing provides containment of the core to prevent buckling of the core. A metal foil interface or unbonding layer is provided between the deformable core and the casing so that the deformable core does not bind to the casing. The buckling restrained brace provides significant performance improvements over prior art BRBs coupled with simplified assembly.

Abstract: Continuous pultrusion of prepreg material systems is provided. A prepreg material, comprising fibers infiltrated with a partially cured resin, is introduced into a pultrusion die with a barrier layer between surfaces of the prepreg material and facing inner surfaces of the die. The prepreg material and the barrier layers are continuously pulled through the pultrusion die. The barrier layer is removed from each surface of the prepreg material after exiting the die.

Abstract: A shock and vibration isolator device has one or more connecting elements of a superelastic shape memory alloy composite material extending between a base member, configured to mount to a structure or ground, and a mounting member, configured to support equipment or machinery. The superelastic shape memory alloy composite material is formed of a plurality of superelastic wires embedded in an elastomeric matrix material.

Abstract: A buckling restrained brace includes a deformable core contained within an outer casing. Ends of the core protrude from the casing for connection to a frame or other structure. A length of the deformable core between its ends, referred to as the gauge or yielding section, is capable of deforming during an earthquake or blast loading. The gauge section is differentially heat treated from the ends so that the gauge section has a lower yield strength than the ends. The casing provides containment of the core to prevent buckling of the core. A metal foil interface or unbonding layer is provided between the deformable core and the casing so that the deformable core does not bind to the casing. The buckling restrained brace provides significant performance improvements over prior art BRBs coupled with simplified assembly.

Abstract: A modular packaging system of containers each having a generally tubular, hollow container body of a fiber-reinforced composite material with cooperative mating interlocking elements extending axially along its length. The interlocking elements allow the containers to be stacked and palletized in a stable manner. An interface between a closure mechanism and the container body provides a good seal and prevents fraying or brooming of the fiber-reinforced composite material at the end face of the body.

Abstract: A buckling restrained brace includes a deformable core contained within an outer casing. Ends of the core protrude from the casing for connection to a frame or other structure. A length of the deformable core between its ends, referred to as the gauge or yielding section, is capable of deforming during an earthquake or blast loading. The gauge section is differentially heat treated from the ends so that the gauge section has a lower yield strength than the ends. The casing provides containment of the core to prevent buckling of the core. A metal foil interface or unbonding layer is provided between the deformable core and the casing so that the deformable core does not bind to the casing. The buckling restrained brace provides significant performance improvements over prior art BRBs coupled with simplified assembly.

Abstract: An unmanned aerial vehicle mounts a payload section to an air delivery vehicle. The air delivery vehicle includes deployable wings and tail fins for gliding or powered flight. A set of propeller blades are provided for powered flight. The propeller blades are mounted for movement from a stowed position to deployed position extending radially from the fuselage for powered flight.

Abstract: A grid fin control system for a fluid-borne body includes a nozzle extension, an optional stabilization device, and a plurality of grid fins. The grid fins are stowable folded against the nozzle extension and deployable to extend radially outwardly.

Abstract: A joiner panel system is formed from a composite material and includes a panel attached to a deck by a coaming or shoe and attached at its upper edge by a curtain plate that fits around obstructions at the ceiling area. The shoe can be readily installed to an uneven steel deck by stud welding to reduce installation time or attached to a composite material deck. A curtain plate fabrication method uses a laser scan or close range photogrammetry of the overhead area to optimize and automate the cutting of curtain plate sections. The curtain plate sections can then be readily installed in the overhead area. A composite material panel to provide good flame, smoke and toxicity properties and good mechanical properties is formed from a phenolic resin foam material, micro-balloons to reduce the weight and density, and reinforcing fibers and powder material to improve the mechanical properties. The panel can be formed by a method in which the core and face skins are co-cured to provide a good bond.

Abstract: A thermal management system includes a base element and a heat producing element disposed for heat transfer from the heat producing element to the base element. An adherent zone includes an adherent element in physical attachment between the heat producing element and the base element. A heat transfer zone, separate from the adherent zone, includes a heat pipe between the heat producing element and the base element. The heat pipe includes a circulatory flow path between an evaporator section and a condenser section, and a working fluid on the circulatory flow path.