Abstract: An aerofoil having a leading edge and a trailing edge, the leading edge including a plurality of slits extending toward the trailing edge, such that the leading edge is defined by alternating peaks and troughs. Each peak extends in a generally spanwise direction and defines a peak width, each peak being separated from an adjacent peak in the spanwise direction by a trough. Each trough extends in the generally spanwise direction and is spaced in a chordwise direction from the peak, each trough defining a trough width. A ratio of the peak width to the trough width is between 4:1 and 10:1.

Abstract: Systems, methods, and storage media for optimizing automated modelling of resource allocation are disclosed. Exemplary implementations include operations for: receive or retrieve by a computer system, operational information associated with a plurality of users; allocate, by the computer system, at least a first time portion to at least a first task associated with a first user of the plurality of users based on analysis of the operational information; and dynamically modify, by the computer system, the first time portion responsive to receiving or retrieving additional operational information over time.

Abstract: An aerofoil component (10) defining an in use leading edge (16) and a trailing edge (18), the leading edge (16) comprising at least one serration (22) defining a sawtooth profile projecting in a generally upstream direction, each serration (22) comprising a plurality of rectangular-wave projections (26) extending in an upstream chordwise direction from the sawtooth profile.

Abstract: Rotor thrust balancing systems for turbomachines and methods of using the same are generally disclosed. For example, a rotor thrust balancing system for a turbomachine, wherein the turbomachine defines a centerline extending the length of the turbomachine. The system includes a rotating drive shaft, a thrust bearing, and a first waveguide sensor. The rotating drive shaft couples a turbine section and a compressor section of the turbomachine. The thrust bearing supports the rotating drive shaft of the turbomachine. The thrust bearing includes a plurality of ball bearings, an inner race coupled to the rotating drive shaft, and an outer race coupled to a fixed structure. The first waveguide sensor is coupled to the outer race at a first end of the waveguide sensor. The waveguide sensor communicates a vibrational frequency from the thrust bearing to a second end of the waveguide sensor.

Abstract: A power-subsystem-monitoring-based computing system includes a power subsystem coupled to a first computing component. A throttling engine throttles the first computing component when the power subsystem exceeds its maximum power consumption, and de-throttles the first computing component when the power subsystem no longer exceeds its maximum power consumption. The throttling engine also throttles the first computing component when the power subsystem exceeds its rated power consumption for a first time period, and de-throttles the first computing component when the power subsystem no longer exceeds its rated power consumption.

Abstract: An aerofoil component defines an in use leading edge and a trailing edge. The leading edge has at least one serration defining an apex and a nadir. The leading edge has a generally chordwise extending slot located at the nadir of each serration.

Abstract: An aerofoil component (32) defining an in use leading edge (38) and a trailing edge (40). At least one of the leading edge and the trailing edge (38, 40) comprises a plurality of first and second recesses (52, 56) projecting in a direction corresponding with an in use flow direction, the first and second recesses being spaced apart normal to the in use flow direction and having a different chordal extent.

Abstract: An aerofoil having a leading edge and a trailing edge, the leading edge including a plurality of slits extending toward the trailing edge, such that the leading edge is defined by alternating peaks and troughs. Each peak extends in a generally spanwise direction and defines a peak width, each peak being separated from an adjacent peak in the spanwise direction by a trough. Each trough extends in the generally spanwise direction and is spaced in a chordwise direction from the peak, each trough defining a trough width. A ratio of the peak width to the trough width is between 4:1 and 10:1.

Abstract: Establishing secure connections from a computing device to secure servers when the computing device starts with an incorrect system clock time that would ordinarily prohibit connection to the secure servers. A method includes attempting to access a plurality of secure servers. The method further includes, from each of the servers in the plurality of secure servers, receiving one or more certificates from the secure servers and metadata which includes a specification of time. The method further includes preventing secure applications from sending sensitive data to the plurality of secure servers until a system time has been approximated. The method further includes, from the secure specifications of time, approximating a current system time. The method further includes accessing another secure server using the approximated current system time and using the approximated current system time to validate a certificate from the other server.

Abstract: Systems for controlling concentric tube probes are disclosed. In some examples, the system includes a concentric tube position display interface and a control system. The concentric tube display interface includes a display for displaying visual feedback to a user indicating a position (and possibly orientation) of a tip of a concentric tube probe and a user input device for receiving user input from the user designating a goal position (and possibly orientation) for the tip of the concentric tube probe. The control system is configured for interactive-rate motion planning of the concentric tube probe by creating, in real-time or near real-time, a motion plan to move the tip of the concentric tube probe to the goal position (and possibly orientation) while avoiding contact by the concentric tube probe with one or more obstacles and for configuring the concentric tube probe as specified by the motion plan.

Abstract: Methods, systems, and computer readable media for transoral lung access. In some examples, the system includes a bronchoscope, a concentric tube probe deployable from within the bronchoscope, and a steerable needle nested deployable from within the concentric tube probe. The system can include a control system for deploying the concentric tube probe from the bronchoscope into a lung to a location where a target is within a range of the steerable needle and for deploying the steerable needle from the location to the target.

Abstract: A multilayer electronics assembly and associated method of manufacture are provided. The multilayer electronics assembly includes a plurality of stacked substrate layers. Each of the substrate layers is fusion bonded to at least an adjacent one of the plurality of substrate layers. A first discrete electrical circuit component is bonded to a first layer of the plurality of layers. A bonding material is interposed between the discrete electrical circuit component and the first layer. The bonding material has a reflow temperature at which the bonding material becomes flowable that is higher than a fusion bonding temperature of the substrate layers.

Abstract: A blade for a rotating machine, particularly for a gas turbine engine, has a leading edge and a trailing edge joined by pressure and suction surfaces. The trailing edge has a serrated form including a first periodic variation and a second periodic variation of higher frequency and lower amplitude than the first periodic variation.

Abstract: A vehicle includes an accelerator pedal moveable across a plurality of predefined positions and a controller programmed to, responsive to the pedal reaching a tip-in position, command a downshift to a downshift gear from an initial gear. A difference between the initial and downshift gears exceeds a number of predefined positions crossed upon moving to the tip-in position when a rate of change of pedal position exceeds a predefined threshold.

Abstract: Products manufactured from a structural laminate generally include a first elongate portion and a second elongate portion fixedly coupled together such that the layers of the structural laminate are visible on at least one surface of the products. The second elongate portion is divided to produce a cut at an intermediate position such that at least one layer of the structural laminate is removed by the cut and an intermediate layer is exposed such that it is visible on an edge of the products. Additionally, a substrate is fixedly coupled to the elongate portions in an orthogonal orientation to layers in the structural laminate of the elongate portions. In some products, portions of the structural laminate are removed to produce voids in the surface, exposing intermediate features of the structural laminate.

Abstract: A multilayer electronics assembly and associated method of manufacture are provided. The multilayer electronics assembly includes a plurality of stacked substrate layers. Each of the substrate layers is fusion bonded to at least an adjacent one of the plurality of substrate layers. A first discrete electrical circuit component is bonded to a first layer of the plurality of layers. A bonding material is interposed between the discrete electrical circuit component and the first layer. The bonding material has a reflow temperature at which the bonding material becomes flowable that is higher than a fusion bonding temperature of the substrate layers.

Abstract: An aerofoil component defines an in use leading edge and a trailing edge. The leading edge has at least one serration defining an apex and a nadir. The leading edge has a generally chordwise extending slot located at the nadir of each serration.

Abstract: Establishing secure connections from a computing device to secure servers when the computing device starts with an incorrect system clock time that would ordinarily prohibit connection to the secure servers. A method includes attempting to access a plurality of secure servers. The method further includes, from each of the servers in the plurality of secure servers, receiving one or more certificates from the secure servers and metadata which includes a specification of time. The method further includes preventing secure applications from sending sensitive data to the plurality of secure servers until a system time has been approximated. The method further includes, from the secure specifications of time, approximating a current system time. The method further includes accessing another secure server using the approximated current system time and using the approximated current system time to validate a certificate from the other server.

Abstract: One or more controller may extract voice commands from retrieved web content, format the web content according to vehicle computing system (VCS) specific formatting information, provide the formatted web content for display by the VCS, and update the recognized voice commands of the VCS according to the extracted voice commands. A server may identify whether a received web request for web content is directed to a vehicle sub-domain for providing an in-vehicle-specific version of the content, identify whether the received web request is for presentation of web content via a VCS, and redirect the web request to the vehicle sub-domain when the request is not directed to the vehicle sub-domain and is for presentation via the VCS.

Abstract: An aerofoil component (32) defining an in use leading edge (38) and a trailing edge (40). At least one of the leading edge and the trailing edge (38, 40) comprises a plurality of first and second recesses (52, 56) projecting in a direction corresponding with an in use flow direction, the first and second recesses being spaced apart normal to the in use flow direction and having a different chordal extent.