Abstract: A system includes a controller, a heating, ventilation, and air conditioning (HVAC) unit, first and second dampers, and first and second pressure sensors. The first damper is positioned at a first air duct that supplies air from an exterior of a premises. The second damper is positioned at a second air duct that supplies air from an interior of the premises. The first pressure sensor is configured to detect an air pressure exterior to the premises. The second pressure sensor is configured to detect an air pressure within the premises. The controller is configured to receive the detected exterior air pressure and the detected interior air pressure, and the controller is configured to change the air pressure within the premises by adjusting at least one of the first damper and the second damper based on the detected exterior and interior air pressures.

Abstract: A suturing device includes an elongated sheath and a suturing assembly. The elongated sheath has a working end for insertion through a working channel in an endoscope and has an inner passage. The suturing assembly includes an elongated flexible base member, a first suturing arm and a second suturing arm. The suturing arms each have a proximal end interconnected with the elongated base member and an opposite distal end. A needle receiver is disposed at the distal end of each suturing arm. The suturing arms are movable between an open position wherein the distal ends are spaced apart by a first distance and a closed position wherein the distal ends are spaced apart by a second distance less than the first distance.

Abstract: A suturing device includes an elongated sheath and a suturing assembly. The elongated sheath has a working end for insertion through a working channel in an endoscope and has an inner passage. The suturing assembly includes an elongated flexible base member, a first suturing arm and a second suturing arm. The suturing arms each have a proximal end interconnected with the elongated base member and an opposite distal end. A needle receiver is disposed at the distal end of each suturing arm. The suturing arms are movable between an open position wherein the distal ends are spaced apart by a first distance and a closed position wherein the distal ends are spaced apart by a second distance less than the first distance.

Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.

Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.

Abstract: A method providing fault isolation, in an air data system which uses artificial intelligence to generate an air data parameter, includes generating the air data parameter as a function of a plurality of measured values such as static pressures. Then, estimates of each of the plurality of measured values is generated as a function of the generated air data parameter. Each measured value can then be compared to its corresponding estimate to determine if a difference between the measured value and its corresponding estimate exceeds a threshold and therefore indicates a fault in a device which provides the measured value.

Abstract: The disclosure is directed to a process for purifying a titanium chloride-containing feedstock using an activated carbon bed, comprising: (a) providing the titanium chloride-containing feedstock comprising an impurity, such as arsenic, and at least one tracker species selected from the group consisting of phosgene, carbonyl sulfide, sulfur dioxide, carbon disulfide, thionyl chloride, sulfur chloride, SO2Cl2, carbon dioxide, and hydrochloric acid and combinations thereof; (b) feeding the titanium chloride-containing feedstock to the activated carbon bed; (c) contacting the titanium chloride-containing feedstock with the activated carbon by flowing the feedstock through the activated carbon bed to remove at least a portion of both the tracker species and the impurity from the feedstock to form a treated product; (d) continuing the flow of the titanium chloride-containing feedstock at least until the tracker species is detected in the treated product; and (e) regenerating the activated carbon bed.

Abstract: A method of calculating a system level air data parameter for an aircraft, for example aircraft angle-of-attack (AOA) and/or angle-of-sideslip (AOS), includes measuring a plurality of local static pressures pi. Next, a plurality of non-dimensional pressure ratios are each generated as a function of one of the plurality of local static pressures pi, a predicted system static pressure Pspredicted, and a predicted impact pressure qc predicted. Then, the system level air data parameter is calculated as a function of the generated plurality of non-dimensional pressure ratios. Air data systems having air data computers configured to implement the method are also disclosed. The air data systems can be Flush Air Data Systems (FADS), or other types of air data systems.

Abstract: A system for determining physical characteristics of an incident flow stream over a surface of a vehicle includes a plurality of acoustic sensors mounted to the surface and configured to sense pressure fluctuations caused by the incident flow stream. The plurality of acoustic sensors provide output signals indicative of the sensed pressure fluctuations. Processing circuitry coupled to the plurality of acoustic sensors, measures flow velocity in a first direction as a function of the output signals of at least two of the plurality of acoustic sensors, and measures flow velocity in a second direction as a function of the output signals of at least two of the plurality of acoustic sensors. The processing circuitry is configured to calculate an angular direction of flow as a function of the first and second measured flow velocities.

Abstract: The disclosure is directed to a process for purifying a titanium chloride-containing feedstock using an activated carbon bed, comprising: (a) providing the titanium chloride-containing feedstock comprising an impurity, such as arsenic, and at least one tracker species selected from the group consisting of phosgene, carbonyl sulfide, sulfur dioxide, carbon disulfide, thionyl chloride, sulfur chloride, SO2Cl2, carbon dioxide, and hydrochloric acid and combinations thereof; (b) feeding the titanium chloride-containing feedstock to the activated carbon bed; (c) contacting the titanium chloride-containing feedstock with the activated carbon by flowing the feedstock through the activated carbon bed to remove at least a portion of both the tracker species and the impurity from the feedstock to form a treated product; (d) continuing the flow of the titanium chloride-containing feedstock at least until the tracker species is detected in the treated product; and (e) regenerating the activated carbon bed.

Abstract: An ice detector for providing a signal indicating ice formation includes a probe protruding into an airflow. The probe extends into the airflow from a strut. The strut has one or more features which allow the probe to accrete ice at a higher temperature than would conventionally be possible. Strut features can include a notch formed therein in an upwind direction relative to the probe, and a curved surface adjacent a point of extension of the probe from the strut.

Abstract: The present invention is a process for reducing raw material yield losses resulting from the passivation aluminum chloride and vanadium chlorides in the chlorinator discharge in a carbochlorination process for making titanium tetrachloride.

Abstract: A system for providing independent and dissimilar aircraft parameter estimations includes first and second dual-channel electronic multi-function probes (MFPs) positionable adjacent an aircraft skin. Each dual-channel electronic MFP has pressure sensing ports and an electronics housing. Located within the electronics housing of each dual-channel electronic MFP are first and second electronics channels. The first electronics channel of the first dual-channel electronic MFP is electrically coupled with the first electronics channel of the second dual-channel electronic MFP can provide a first air data system providing aircraft parameter estimations. The second electronics channel of the first dual-channel electronic MFP can be electrically coupled with the second electronics channel of the second dual-channel electronic MFP to provide a second air data system providing aircraft parameter estimations. The first and second air data systems are independent and dissimilar from one another.

Abstract: This invention relates to a method of transfer printing in which a continuous length of strip is coated with a thermosetting material e.g. and alkyd, polyester, polyurethane or epoxy paint, and brought into contact immediately after curing with a continuous strip of printed material. The temperature of the strip at this time lies between 180.degree. C. and 280.degree. C. and the contact is effected during the passage of both strips between resiliently surfaced rollers at a pressure of at least 50 p.s.i., the ink print being transferred to the strip by sublimation.