Abstract: A tool for providing a visualization of a system may reveal an interactive navigation environment for building performance observation and assessment. The tool may be associated with a processor. The environment may incorporate a treemap, a graph pane, a treemap filter, a graph pane selector, a selected units box and a date/time control mechanism. A visualization of the environment, among other things, may be presented on a display. The treemap may exhibit a building geometry and/or equipment units hierarchically, along with some data information. Units may be interactively selected from the treemap and placed in the box for analysis. The graph pane may show a configuration and display of unit analysis. Selection of detailed views for units in the box may be provided by the graph pane selector. Date and time intervals for analysis may be selected by the control mechanism.

Abstract: A wideband power amplifier is presented. The wideband power amplifier configured to be coupled to a load having an impedance ZL, where the wideband power amplifier comprises: a quadrature coupler; a carrier amplifier coupled to the quadrature coupler; a peak amplifier coupled to the quadrature coupler; wherein the carrier amplifier saturates at an input power level lower than the input power level at which the peak amplifier saturates; wherein each of the carrier amplifier and the peak amplifier has a termination impedance of approximately Ropt, where Ropt is the optimum impedance at which the carrier amplifier and the peak amplifier will deliver rated max powers; a impedance transformer, coupled to the carrier amplifier having a characteristic impedance of 2*Ropt; an impedance transformer, coupled to the peak amplifier and the impedance transformer; wherein the impedance transformer is configured transform a load impedance ZL to 2*Ropt.

Abstract: An air traffic command automation system for automating the process of listening to, interpreting, adhering to, and responding to air traffic command messages is disclosed. The system includes one or more processors configured by programming instructions on non-transient computer readable media. The system is configured to: receive an air traffic command message, from an entity other than the flight crew, that includes one or more tasks for the aircraft to perform; determine from the command message the one or more tasks for the aircraft to perform; generate a sequence of actions for each task that the aircraft can undertake to accomplish the task; verify the coherence, feasibility, and safety of the actions; relay an interpretation of the command message to the command message originator; preview the verified sequence of actions with the flight crew; and issue commands to execute actions at appropriate points during a mission.

Abstract: A liner for a combustor includes a first wall and a second wall extending around at least a portion of the first wall to form a liner cavity with the first wall. The first wall defines a first wall orifice and the second wall defines a second wall orifice. The liner further includes a first insert mounted on the second wall within the second wall orifice and extending through the first wall orifice. The first insert is configured to direct a first air jet through the second wall and the first wall. The first insert is formed by a tubular body portion extending through the first wall orifice and the second wall orifice, and a shoulder extending around the body portion that abuts the first side of the second wall. The shoulder has a first diameter and the first wall orifice has a second diameter, greater than the first diameter.

Abstract: Methods and systems are provided for optimizing aircraft operations using uplink weather data to identify predicted turbulent conditions. The method comprises uploading current weather data to a flight management system (FMS) of an aircraft. Areas of turbulence are identified according to the uploaded weather data including areas of turbulence along the client flight trajectory stored in the FMS of the aircraft. An optimal turbulence penetration speed is planned for each identified area of turbulence. The estimated time of arrival (ETA) and minimum and maximum estimate time of arrival (ETA min/max) for the aircraft is recalculated based on the optimal turbulence penetration speeds. The recalculated ETA and ETA min/max is automatically transmitted to an air traffic control (ATC) authority with the FMS of the aircraft.

Abstract: The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.

Abstract: Outflow valve (OFV) assemblies including non-metallic frames and enhanced attachment features are provided. In embodiments, the OFV assembly includes a non-metallic frame to which at least one valve door is pivotally mounted. The non-metallic frame may, in turn, include a generally rectangular frame body, a central opening through the frame body, an outer peripheral flange extending around at least a portion of the frame body. Frame attachment interfaces are distributed or spaced around the outer peripheral flange of the non-metallic frame. The frame attachment interfaces include fastener openings and elevated platform regions, which project from an inboard side of the outer peripheral flange and through which the fastener openings extend. Base plates seat against the elevated platform regions. Fasteners engage the base plates and extend through the fastener openings to an outboard side of the outer peripheral flange to attach the OFV assembly to an aircraft fuselage.

Abstract: An electrochemical H2S sensor comprises a housing, an electrolyte disposed within the housing, and a plurality of electrodes in contact with the electrolyte within the housing. The plurality of electrodes comprises a working electrode and a counter electrode. A surface area of the working electrode in contact with the electrolyte is less than a surface area of the counter electrode in contact with the electrolyte.

Abstract: Methods, systems and apparatuses for scheduling a plurality of Virtual Links (VLs) in a Time-Triggered Ethernet (TTE) network by a network scheduling and configuration tool (NST) by establishing a collection of bins that corresponds to the smallest harmonic period allowing full network traversal of a time-triggered traffic packet in the network for determining available bin sets for sending the VL data by the NST; processing by a scheduling algorithm the VLs to be sent in accordance with a strict order comprising scheduling all the highest rate VLs prior to scheduling lower rate VLs; and scheduling reservations for the VLs in bins by tracking the available time available in each bin and optionally spreading the VL data across available bin sets by sorting a list of available bins by ascending bin utilization and by specifying a left-to-right or right-to-left sort order when searching for available bins based on a position in the timeline between the transmitter and receiver end stations.

Abstract: In some examples, a radar system includes phase-locked loop (PLL) circuitry configured to generate a control voltage signal and processing circuitry configured to generate a reference signal to drive the PLL circuitry to generate the control voltage signal. In some examples, the radar system also includes voltage-controlled oscillator (VCO) circuitry configured to generate radio-frequency (RF) signals based on the control voltage signal and one or more antennas configured to transmit the RF signals and receive returned RF signals. In some examples, the radar system further includes receiver circuitry configured to generate intermediate-frequency (IF) signals based on the returned RF signals, wherein the processing circuitry is further configured to detect an object based on the IF signals.

Abstract: Techniques are provided for correcting for time varying changes to a gyroscope incorporating a resonator and/or to an environment in which the gyroscope is located, and which affect the resonator. Free spectral range of the gyroscope, which varies with such changes, is determined and is used to correct at least one of gyroscope bias and scale factor.

Abstract: In some examples, a collision awareness system includes a receiver configured to receive a first clearance for a first vehicle, receive a first image of the first vehicle, and receive a second clearance for a second vehicle. The collision awareness system also includes processing circuitry configured to determine that the first vehicle is positioned incorrectly based on the first clearance and the first image. The processing circuitry is also configured to generate an alert based on the second clearance and in response to determining that the first vehicle is positioned incorrectly.

Abstract: A bichromatic grating coupler comprises a two-dimensional diffraction grating structure, including a first sub-grating having a first periodic structure and a second sub-grating having a second periodic structure. The first and second sub-gratings are superimposed with respect to each other in the diffraction grating structure. A first optical port is coupled to the diffraction grating structure along a first direction, and a second optical port is coupled to the diffraction grating structure along a second direction. The first optical port is configured to direct a first light beam having a first wavelength to the diffraction grating structure, such that the first light beam is diffracted in a first direction by the first sub-grating. The second optical port is configured to direct a second light beam having a second wavelength to the diffraction grating structure, such that the second light beam is diffracted in a second direction by the second sub-grating.

Abstract: A compressor includes a rotor platform; a rotor blade; and a casing having an inner surface surrounding the tip and spaced radially outwardly from the tip to define a gap. A secondary air flow system includes a bleed inlet configured to remove secondary air flow from the primary air flow; an injection opening disposed in the inner surface of the casing upstream of the bleed inlet; an accessory conduit; and a plenum fluidly coupled to the bleed inlet, the injection opening, and the accessory conduit. The bleed inlet and plenum at least partially define a secondary air flow path such that a first portion of the secondary air flow is directed in through the bleed inlet, through the plenum, and out through the injection opening and a second portion of the secondary air flow is directed in through the bleed inlet, through the plenum, and out through the accessory conduit.

Abstract: A turbine shroud assembly includes a shroud support and a shroud segment. The shroud support structure includes a forward support rail and an aft support rail. The forward support rail includes forward first engagement structures and the aft support rail includes aft first engagement structures. The shroud segment includes a forward segment rail and an aft segment rail. The forward segment rail includes forward second engagement structures positioned on a forward segment rail periphery and the aft segment rail includes second engagement structures positioned on an aft segment rail periphery. The forward first engagement structures radially and circumferentially engage with the forward second engagement structures and the aft first engagement structures radially and circumferentially engage with the aft second engagement structures to radially and circumferentially interlock the shroud segment to the shroud support structure.

Abstract: A method and system for identifying and displaying alerts of air traffic by receiving input data to a processor of an aircraft wherein the input data comprises: distress, emergency, and special traffic data; generating, by a graphic device coupled to the processor, restricted and unrestricted airspace about the aircraft based the input data; displaying, by the graphic device, the restricted and unrestricted airspace on a display of the aircraft to view on a traffic map the restricted and unrestricted airspace for navigating the aircraft; and generating, by a graphic device coupled to the processor, restricted and unrestricted airspace about the aircraft based on the input data from an aircraft transponder, an emergency locator beacon and an ADS-B emitter.

Abstract: A method includes identifying one or more proxy limit variables to be used to define an operating envelope associated with an industrial process controller. The industrial process controller is associated with a number of process variables including the proxy limit variable(s). The method also includes maximizing and minimizing at least one of the proxy limit variable(s). The method further includes presenting maximum and minimum values of the at least one of the proxy limit variable(s) as the operating envelope in a graphical user interface to at least one user. A single proxy limit variable could be used, and maximum and minimum values of the single proxy limit variable can be presented in a one-dimensional representation of the operating envelope. Multiple proxy limit variables could also be used, and maximum and minimum values of the proxy limit variables can be presented in a multi-dimensional representation of the operating envelope.

Abstract: Refrigerant systems for conditioning air and/or items located within a dwelling including a high temperature refrigerant circulation loop located substantially outside of the dwelling and a low temperature transfer circuit, which contains HCFO-1233zd(E) substantially inside of the dwelling and at least one intermediate heat exchanger which permits exchange of heat between the high temperature circuit and the HFCO-1233zd(E) in the low temperature heat transfer circuit.

Abstract: A ring laser gyroscope is provided. A light source is configured to generate light of a first wavelength. A plurality primary cavity mirrors are configured to route light of a second wavelength around a primary cavity to a readout device. One primary cavity mirror of the plurality of primary cavity mirrors includes a gain medium. The pumping mirror and the one primary cavity mirror including the gain medium is positioned and configured to reflect the light of the first wavelength back and forth in a pumping cavity through the gain medium, wherein the light of the first wavelength stimulates the gain medium to generate the light of the second wavelength that are reflected around the primary cavity to the readout device.

Abstract: In one embodiment, a radio altimeter tracking filter is provided. The filter comprises: a wireless radio interface; a processor coupled to the wireless radio interface; a memory coupled to the wireless radio interface; wherein the wireless radio interface is configured to wirelessly receive a radio altimeter signal and convert the radio altimeter signal to a baseband frequency signal, wherein the a radio altimeter signal sweeps across a first frequency spectrum between a first frequency and a second frequency; wherein the processor is configured to pass the baseband frequency signal through a filter executed by the processor, the filter comprising a passband having a first bandwidth, and wherein the filter outputs a plurality of spectral chirps in response to the baseband frequency signal passing through the first bandwidth; wherein the processor is configured to process the plurality of spectral chirps to output characteristic parameters that characterize the radio altimeter signal.