Abstract: A method and system may include receiving a sample gas from an ambient environment on a first surface of a selective isolation device within an inlet assembly, dispersing the sample gas in substantially a first direction along the first surface, and circulating a carrier gas through a main assembly coupled to the inlet assembly, the main assembly defining a carrier gas environment. The method and system also may include selectively passing analytes from the sample gas through the selective isolation device to a second surface of the selective isolation device, the selective isolation device separating the ambient environment from the carrier gas environment, dispersing the carrier gas in substantially a second direction along the second surface, and obtaining the analytes in the carrier gas from the second surface.

Abstract: Fire-resistant structural composites are comprised of a phenolic resin system, reinforcing fibers and alumina tri-hydrate. The composites may be formed into structural or load-bearing parts, and are particularly suited for applications requiring high strength and a high degree of fire-resistance, such as in the automotive, aircraft, or ship-building industry. Optionally, a siloxane modifier may be added to the resin system to improve the flexibility and impact resistance of the composite.

Abstract: A method of manufacturing a hollow section grid-stiffened panel comprises providing a tool (10) having a surface (12). The stiffened skin composite panel is preassembled comprising laminating a composite outer skin (14) on the surface, placing a separator outer layer (16) on the composite outer skin (14), and laminating a composite stiffener (20) on the mandrel (18), the mandrel being positioned on the separator layer (16), wherein the separator layer (16) separates the stiffener (20) and the mandrel (18) from the outer composite skin (14). The preassembled outer skin composite panel is cured on the tool. The separator layer (16) and mandrel (18) are removed from the preassembled stiffened skin composite panel. The stiffened skin composite panel is reassembled, comprising applying an adhesive between the composite outer skin (14) and the composite stiffener (20). The reassembled stiffener skin composite panel is cured on the tool to bond the stiffener skin to the outer skin.

Abstract: The invention relates to a seam bracket for providing electrical contact between a first structural wall member and a second structural wall member. The seam bracket includes a flexible channel portion have a first wall and a second wall, the first wall having a first interior surface and a first exterior surface, the second wall having a second interior surface and a second exterior surface, a first plurality of barb members flexibly protruding outwardly from the first exterior surface, and a second plurality of barb members flexibly protruding outwardly from the second exterior surface. The seam bracket further includes a first side mount portion adjacent the first wall, the first side mount portion including a first plurality of fastener holes, and a second side mount portion adjacent the second wall, the second side mount portion including a second plurality of fastener holes.

Abstract: A carrier assembly for a gun comprises a gun bolt carrier disposed to reciprocate axially with respect to the central axis of the gun, and a gun bolt disposed to reciprocate axially within the carrier. The gun bolt has a locking groove therein. The assembly also comprises a bolt locking mechanism extending through a portion of the bolt carrier to selectively engage the locking groove and thereby prevent the bolt from moving with respect to the carrier. The assembly further comprises a generally axial groove in a non-reciprocating portion of the gun that engages and selectively rotates the rotatable bolt locking mechanism to selectively lock the bolt to the carrier.

Abstract: A launcher platform including a support structure and a number of rails mounted on the support structure for supporting missiles thereon, each adjacent rail elevated above the other rails to accommodate additional missiles and different type missiles while maintaining low center of gravity.

Abstract: A system and method for absorbing a recoil force in a weapon is provided. A recoil mechanism includes a housing that contains a hydraulic fluid and has an inner wall defining a first chamber and a second chamber within the housing. The inner wall has at least one orifice that connects the first and second chambers. A piston is slidably disposed within the first chamber of the housing. A shuttle valve is slidably disposed within the first chamber of the housing and has at least one orifice configured to align with the at least one orifice in the inner wall of the housing to define a fluid passageway between the first and second chambers. A shuttle valve control is operable to generate a magnetic field in response to an applied current to control the movement of the shuttle valve to thereby control the size of the fluid passageway between the first and second chambers.

Abstract: A friction restraint and latching assembly for a charge unit storage chamber defined by an elongated casing having an open end, and including a friction restraint bar of a length approximating that of the elongated casing, and supported at the periphery of the casing for axial and radial movement between a retracted position out of contact with charge units in the storage chamber and an engaged position in frictional contact with the charge units in the storage chamber and so that axial movement of the friction restraint bar toward the open end of the casing results in radial movement of the friction restraint bar to the engaged position. The friction restraint bare is biased yieldably to the engaged position.