Abstract: An aircraft is disclosed, including a fuselage having a compartment configured to house refueling apparatus. An auxiliary power unit is mounted in the compartment.

Abstract: An aircraft is disclosed, including a fuselage having a compartment configured to house refueling apparatus. An auxiliary power unit is mounted in the compartment.

Abstract: An aircraft is disclosed, including a fuselage having a compartment configured to house refueling apparatus. An auxiliary power unit is mounted in the compartment.

Abstract: Various screening systems are disclosed, including a system including a radiation detection component, a toxic chemical detection component, a toxic chemical agent sampling component, a bio-threat detection component, a puffer-based bio-threat sampling component, an explosive detection component, and an X-ray based imager, such that it automatically screens mail for the presence of multiple threat agents, such as chemical, biological, radiological, nuclear and explosive threats. An automated sample arm collects a sample when a sampling substrate contacts a portion of the item of mail while there is relative motion between the automated sample arm and the item of mail. The sample is conveyed to a detector and the sampling substrate is regenerated by heating it.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: A hide-behind bunker system and kit for enabling a user to take cover behind at least one stand-alone, impact dampening structure. The system comprises at least one inflatable hide-behind structure cooperatively associated with an impact dampening anchor system. The hide-behind structure comprises an inferior bunker end, an opaque outer bunker surface, a matter-retaining inner bunker surface, and air inlet-outlet structure. The inner bunker surface defines an inner structure volume for receiving and retaining structure-erecting air. The impact dampening anchor system or assembly is attached to and extends outwardly from the outer bunker surface adjacent the inferior bunker end. The anchor system comprises at least three elastic link anchor assemblies, which assemblies each comprise a looped elastic member. The elastic member functions to absorb certain bodily impact when users collide therewith. The system and kit thus enable a user to take cover behind at least one stand-alone, impact dampening structure.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: An apparatus for axially retaining a shaft comprises a shaft having an axis of rotation and an axially-affixed member having a bore therethrough coaxial with the shaft and having an inside diameter, the shaft passing through the bore. The apparatus also includes a retainer mounted about the shaft in a first groove, the retainer having an outside diameter larger than the diameter of the bore. The apparatus further comprises a retaining ring mounted about the shaft in a second groove, the retaining ring having a compressed outside diameter less than the inside diameter of the bore and an uncompressed outside diameter larger than the diameter of the bore. The first groove and the second groove are located on first and second axial sides of the member, respectively, and the retainer and the retaining ring cooperate to substantially prevent axial movement of the shaft with respect to the member. A method for assembling an apparatus having a shaft comprises placing a retaining ring about the shaft in a groove.

Abstract: A multilayered, light-scattering back reflector for a photovoltaic device, said back reflector including a first relatively hard, textured layer atop a substrate and a second highly reflective layer conformally disposed atop the first layer. The back reflector may further include a third light scattering layer formed atop said second layer, said third layer adapted to further provide a barrier layer between the body of semiconductor material from which the photovoltaic device is formed and the multilayered back reflector.