Abstract: Hydrofluorocarbon refrigerant compositions enable the use of existing compressor technologies in heat pump water heaters in a reliable (low discharge temperatures and pressures) and efficient (high capacity and efficiency) manner. The refrigerant comprises blends of pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a) and tetrafluoropropene (HFO-1234ze).

Abstract: Methods and apparatus are provided for a fan containment system for a gas turbine engine having a plurality of fan blades includes a cylindrical casing with an inner surface surrounding the plurality of fan blades and an opposing outer surface; a first layer of fabric material positioned on the exterior surface of the cylindrical casing; and a shear thickening fluid impregnated within the first layer of fabric material.

Abstract: The invention is a detection system that provides for background removal from a field of view (FOV) of spectra. A panoramic field of regard may be partitioned into a large number of FOV's. An FOV may include spectra including that of a target substance. Such detection may require removing the spectra other than that of the target. This may amount to removal of the background with an estimated background developed from spectra of one or more FOV's which may be similar to the background of the FOV with the target. An estimation of the background may be a sum of a number of FOV spectra where each spectrum is assigned a weight, the total amount of the weights being one.

Abstract: Systems and methods for improving the reception and delivery of an In-Trail Procedures (ITP) altitude change request. An example system located on board a host aircraft includes a communication component, a display device and a processor unit that is in signal communication with the communication component and the display device. The processor unit presents a user interface on the display device. The user interface includes a plurality of fields for receiving In-Trail Procedures (ITP) altitude change request information. The processor sends the ITP altitude change request information received within the plurality of fields to an Air Traffic Control (ATC) facility via the communication component. An ITP unit having a display receives an altitude selection and presents ITP altitude change request information if the received altitude selection is determined to be valid.

Abstract: A corrosion resistant flow sensor apparatus includes a flow sensor including a micromachinable substrate mounted on a package substrate that includes electrically conductive traces and substrate bond pads. The flow sensor includes a MEMS sensing structure for sensing a mass flow parameter and sensor bond pads coupled to the sensing structure. The sensor bond pads include a top metal layer on a metal diffusion barrier layer including a metal diffusion barrier layer sidewall. Bond wires couple the sensor bond pads to the substrate bond pads. A housing including sides and a top portion is around the flow sensor and includes a flow channel having an inlet and an outlet. A multi-layer corrosion protection coating includes a nm scale adhesion layer and a self assembled monolayer (SAM) is on the adhesion layer. The protection coating covers the sensor bond pads including the metal diffusion barrier layer sidewall.

Abstract: A launch and capture system for capturing a vertical take-off and landing (VTOL) vehicle having a thruster and a duct configured to direct airflow generated by the thruster includes a capture plate and an extension. The capture plate is configured to alter the airflow and generate a force attracting the duct to the capture plate. The extension is coupled to the capture plate, and is configured to at least facilitate holding the VTOL vehicle against the capture plate.

Abstract: The present invention relates to a gas-monitoring assembly (100) and method for selectively determining the presence of a target gas in a gaseous environment that potentially comprises one or more interfering gases. Such gas-monitoring assembly and method specifically employ one or more gas sensors (S1) one or more getters (G1) arranged and constructed to reduce cross-interference caused by potential presence of the interfering gases in such gaseous environment to be monitored. The gas-monitoring assembly and method of the present invention are capable of monitoring a gaseous environment with respect to potential presence of multiple target gases that may interfere with one another.

Abstract: Method for fabricating a conductive elastomeric seal, which includes a set of springs plated with an electrically conductive material. Initially, the set of springs can be held in a z-axis position in a mold cavity shaped like a seal. A liquid elastomer can be injected into the mold cavity in such a manner that the elastomer can be over molded around and through coils of each spring. Finally, the elastomer seal with the springs can be removed from the mold cavity, when the elastomer is cured. Ends of each spring can be kept free from the elastomer during over-molding such that the elastomeric seal can provide an electrical contact with a pressure sensor die and electrical leads molded into a sensor housing. Such a conductive elastomeric seal can prevent a die-edge shorting with the sense die in order to achieve long-term sensor reliability and performance.

Abstract: A payload quick release mechanism for an unmanned aerial vehicle is provided. This mechanism is affixed to a structure on the unmanned aerial vehicle, and allows for quick attachment and removal of a payload from the unmanned aerial vehicle. The attachment device includes a body with a perimeter and a plurality of arms that extend from the body perimeter. Each arm includes an indented section, within which a tab extending from the payload top may be placed. When the payload tab rests within the indented section, the payload is prevented from translation and is attached to the mechanism.

Abstract: A polyvinylidene difluoride copolymer with a fluoroolefin selected from 2,3,3,3-tetrafluoropropene, 1,1,3,3,3-pentafluoropropene, 2-chloro-pentafluoropropene, hexafluoropropylene, trifluoroethylene, chlorotrifluoroethylene, 3,3,3-trifluoro-2-trifluoromethylpropene and a mixture thereof, wherein the stoichiometry of the co-monomers defines the barrier properties of the copolymer. Such polymers include moisture barrier copolymers and oxygen barrier copolymer. Processes for preparing such moisture barrier copolymers and oxygen barrier copolymers are also provided.

Abstract: A combustor includes a first liner; and a second liner forming a combustion chamber with the first liner. The combustion chamber is configured to receive an air-fuel mixture for combustion therein, and the first liner is a first dual wall liner having a first hot wall facing the combustion chamber and a first cold wall. The first cold wall has a first cold wall orifice and the first hot wall has a first hot wall orifice. A first insert is mounted in the first hot wall orifice and is configured to receive a first air jet of pressured air from the first cold wall orifice, and guide the first jet through the first hot wall orifice and into the combustion chamber.

Abstract: Provided are azeotrope-like compositions comprising difluoromethane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.

Abstract: A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust gas recirculation (EGR) control on the engine. The amount of particulate matter in or loading of the filter may be determined by the upstream filter. The working condition of the filter may be determined by the downstream sensor. The filter may have a heater and control for providing operational and particulate matter burn-off temperatures to the filter. A processor may be connected to the sensors, the EGR control and the filter heater control.

Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a C1-C3 alcohol, a C5-C6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.

Abstract: An energy savings water heater is described. The water heater is controlled by an energy savings algorithm that uses one or more of a variable setpoint differential, a variable setback threshold, additional setback thresholds, and an adjustable minimal setpoint to improve the operation of an energy efficient water heater. Additionally or alternatively, a different setback control algorithm may be used that obtains additional data to adjust the setpoint. As a result, the operating cost of the water heater is reduced, while minimizing user complaints of cold water.

Abstract: A display device is provided for selecting a plurality of selectable symbols on an electronic display. The display device comprises an electronic display that displays a plurality of selectable symbols, a user input control device, and a processor coupled to the electronic display and the user input control device. The processor is configured to select one of the plurality of selectable symbols based on a comparison of at least two of the plurality of selectable symbols according to a predetermined priority scheme in response to a single activation of the user input control device. In addition, the processor is further configured to select an additional selectable symbol from the plurality of selectable symbols in accordance with a predetermined sequence upon further activation of the input control device.

Abstract: A functional architecture is provided for decentralizing the authorization function of an access control system that incorporates user carried access devices, such as smart cards, and door controllers that interact so as to make access decisions. Access to individual rooms is guarded by parameters partially carried by the user carried access devices and partially included in the door controllers.

Abstract: A method and apparatus are provided for operating a security system. The method includes providing a security system having at least one sensor, coupling a detected state of the at least one sensor to a web server, the web server publishing the detected state and a remotely located user subscribing to receive the detected state of the at least one sensor via the publication by the web server.

Abstract: A method and apparatus are provided for identifying wireless devices within a security system. The method includes the steps of providing a security system monitoring a secured area for an intruder, the security system detecting an intrusion of the secured area, the security system detecting a mobile device within the secured area, the security system retrieving an identifier of the intruder from the mobile device and the security device saving the identifier along with a record of the intrusion.

Abstract: Yellow and yellow-green fluorescent compounds are provided herein that can be incorporated into carriers (e.g., inks) and applied (e.g., printed) as security features on substrates (e.g., documents). The compounds can be selected based upon their resistance to humidity, and preferably exhibit a high initial fluorescence intensity, and a relatively high fluorescence intensity as well as a low relative intensity loss after prolonged humidity exposure.