Abstract: A propulsive engine, has: a core having a compressor section and a turbine section, the turbine section drivingly engaging the compressor section via a shaft, the compressor section having a bleed outlet for extracting compressed air at a bleed pressure; a support structure including an engine case surrounding the core, the support structure defining bearing cavities; bearings located inside the bearing cavities and disposed radially between the engine case and the shaft for rollingly supporting the shaft; and a lubricant tank having an inlet operatively connected to the bleed outlet of the compressor section and an outlet fluidly connected to the bearing cavities for lubricating the bearings, the bleed pressure being greater than a pressure inside the bearing cavities for inducing a lubricant flow from the lubricant tank to the bearing cavities.

Abstract: In accordance with at least one aspect of this disclosure, there is provided a fuel control system for gaseous fuel in an aircraft. The system includes a control module operatively connected to a metering device in a fuel flow conduit, the control module operable to control the flow of fuel through the fuel flow conduit. The control module includes an input line operable to receive a command input indicative of a requested engine state. In embodiments, the control module includes a compressibility logic and machine readable instructions. The machine readable instruction can be configured to cause the control module to control the metering device to achieve the requested engine state based on a compressibility factor input from the compressibility logic.

Abstract: There are describes methods and systems for operating an engine coupled to a fuel system having a fuel manifold configured to supply fuel to a combustor of the engine. The method comprises receiving a gaseous fuel flow request indicative of a change in demand for gaseous fuel to the engine; applying a fuel loss bias to the gaseous fuel flow request to obtain a biased fuel flow request, the fuel loss bias associated with a change in mass flow rate of the gaseous fuel from the fuel manifold to the combustor in response to the change in demand; and causing the gaseous fuel to flow into the combustor in accordance with the biased fuel flow request.

Abstract: There are describes methods and systems for operating an engine coupled to a fuel system having a fuel manifold configured to supply fuel to a combustor of the engine. The method comprises receiving a gaseous fuel flow request indicative of a change in demand for gaseous fuel to the engine; applying a fuel loss bias to the gaseous fuel flow request to obtain a biased fuel flow request, the fuel loss bias associated with a change in mass flow rate of the gaseous fuel from the fuel manifold to the combustor in response to the change in demand; and causing the gaseous fuel to flow into the combustor in accordance with the biased fuel flow request.

Abstract: Methods and systems for starting an engine are described. The method comprises a manifold purging phase where the at least one fuel manifold is filled with an inert gas; a manifold fuel filling phase, where fuel flows into the at least one manifold and blends with the inert gas as the engine rotates, and the inert gas is subsequently turned off; and an ignition phase, where the fuel flowing from the at least one manifold into the combustor is ignited and light-up is detected.

Abstract: In accordance with at least one aspect of this disclosure, there is provided a fuel control system for gaseous fuel in an aircraft. The system includes a control module operatively connected to a metering device in a fuel flow conduit, the control module operable to control the flow of fuel through the fuel flow conduit. The control module includes an input line operable to receive a command input indicative of a requested engine state. In embodiments, the control module includes a compressibility logic and machine readable instructions. The machine readable instruction can be configured to cause the control module to control the metering device to achieve the requested engine state based on a compressibility factor input from the compressibility logic.

Abstract: Methods and systems for operating an engine coupled to a fuel system having at least one fuel manifold configured to supply fuel to a combustor of the engine are described. The method comprises, when the engine is active, supplying fuel to the combustor by supplying gaseous fuel from a gaseous fuel supply to the at least one fuel manifold, and when the engine is inactive, purging the at least one fuel manifold by supplying inert gas from an inert gas supply to the at least one fuel manifold.

Abstract: Systems, methods, and computer-readable storage media facilitating blockchain-based management a portfolio of traded assets are disclosed. In embodiments, a primary authorized participant server may maintain a blockchain comprising blocks storing data associated with holdings of a portfolio of traded assets. Authorized participants may access the holdings files recorded to the blockchain and execute the holdings files against one or more rules engines to manage trading activities and initiate operations to align the portfolio of traded assets with one or more goals. The immutable records recorded to the blockchain may facilitate enhanced transparency and auditing while mitigating front-running and free-riding which could potentially have a negative impact on the portfolio.

Abstract: Embodiments provide systems, methods, and computer-readable storage media for concealing a makeup of a portfolio of traded assets via an optimized holdings file distributed to the public. In embodiments, a holdings file is received that identifies an actual makeup of a portfolio and an obfuscation engine is executed against the holdings file to produce an optimized holdings file. The optimized holding file approximates the portfolio over time but does not include information that reflects the actual makeup of the portfolio at any particular instance in time. The optimized holdings file may be publicly distributed to users while the holdings file is encrypted and distributed to authorized participant servers only, where the encrypted holdings file is ingested by a trading engine of the authorized participant server for use in market making operations with respect to the traded assets held in the portfolio of traded assets.

Abstract: Herein provided are sensing systems, methods, sensors, and methods of manufacturing a sensor for a rotating element in an engine. A magnetic core having first and second ends is positioned with the first end proximate the rotating element. A permanent magnet is positioned proximate the second end of the magnetic core and is configured for subjecting the magnetic core and the rotating element to a magnetic field. A bifilar winding comprising a first wire and a second wire electrically insulated from one another is wrapped around at least a portion of the magnetic core, the bifilar winding configured to generate a first signal in the first wire and a second signal in the second wire in response to rotation of the rotating element relative to the sensor.

Abstract: An intraoral x-ray imaging sensor includes an electronic interface substrate which has a first surface and a second surface and is substantially rectangular with a mesial end and a distal end and a semiconductor imager which is mechanically and electrically coupled to the electronic interface substrate and which has a first surface and a second surface. The semiconductor imager consists of a silicon layer having an array of detector elements formed on its the first surface and is substantially rectangular with a mesial end and a distal end. The electronic interface substrate and the semiconductor imager have a first cut corner and a second cut corner at its the distal end. The second surface of the semiconductor imager is disposed adjacent and contiguous to the first surface of the electronic interface substrate. The intraoral x-ray imaging sensor also includes a plurality of first electrical pads, a plurality of second electrical pads and a plurality of bond wires.

Abstract: An intraoral x-ray imaging sensor includes an electronic interface substrate which has a first surface and a second surface and is substantially rectangular with a mesial end and a distal end and a semiconductor imager which is mechanically and electrically coupled to the electronic interface substrate and which has a first surface and a second surface. The semiconductor imager consists of a silicon layer having an array of detector elements formed on its the first surface and is substantially rectangular with a mesial end and a distal end. The electronic interface substrate and the semiconductor imager have a first cut corner and a second cut corner at its the distal end. The second surface of the semiconductor imager is disposed adjacent and contiguous to the first surface of the electronic interface substrate. The intraoral x-ray imaging sensor also includes a plurality of first electrical pads, a plurality of second electrical pads and a plurality of bond wires.

Abstract: The present invention generally relates to a method and system for retrieving search results. More particularly, the present invention relates to a method and system for retrieving search results concurrently from multiple disparate databases, whether such databases be available through the Web, or other proprietary internal networks. In an exemplary embodiment, the system includes a user interface, a control engine, and a number of translators which are used to communicate with a number of corresponding databases. During exemplary operation, a user uses the user interface to enter search term(s) and other pertinent information relating to his/her search and specify which ones of the databases are to be searched. The search term(s) and other pertinent information are then relayed to the control engine which, in turn, forwards them to the appropriate translators which correspond to the specified databases to be searched.

Abstract: A crowd sourced estimation system provides crowd sourced estimates from one or more estimators that are selected based on one or more predefined criteria. In operation, a user may request and estimate for a property identified by a property identifier. The estimation system may then transmit estimate requests to the selected estimators and generate an aggregate estimate from the estimates received from the estimators as a result. The aggregate estimate is then communicated to the user. The predefined criteria may include location or distance from the property for which an estimate is to be generated.

Abstract: Systems and methods enable remote (or “off-campus”) users complete authorized access to full-record content of 3rd-party databases subscribed to by the user's institution. More particularly, the present invention relates to a method and system that acts as a transparent conduit between the user and a remote database, managing relevant session/context information without the user's awareness and without the need for users to install plug-ins or configure browser proxies.

Abstract: A system and method for automatically adapting digital message traffic flow evaluates message delivery disposition, latency and performance metrics such that the system operates more optimally in terms of both overall throughput as well as with respect to system sending reputation. Reputation is in the context of maintaining message flow within limits that are acceptable for a given destination, such that the sender behavior avoids being flagged as abusive or otherwise undesirable.

Abstract: An instrument panel assembly and method of installing an instrument panel assembly is provided. The instrument panel assembly includes a base having a side portion. The side portion includes a first mounting aperture. A side panel is dimensioned to cover the side portion. The side panel is configured to be angled relative to the side portion so as to preventing other tabs from scratching the exterior surface of the instrument panel assembly.

Abstract: A flexible manufacturing system for an article of footwear includes a printing system for printing graphics onto the footwear. The flexible manufacturing system also includes a projection system for aligning a projected graphic with a predetermined portion of the article prior to printing the graphic to the article. The graphic can include a masked portion that corresponds to a design element on the article.