Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for a variable bleed valve assembly. An example variable bleed valve assembly a variable bleed valve (VBV) door corresponding to a bleed port and a first unison ring, the VBV door coupled to the first unison ring, the first unison ring to move in a circumferential direction between a first position and a second position causing the VBV door to move between the first position and the second position.

Abstract: A method of manufacturing a composite storage tank for liquid hydrogen. The method includes placing a port on a layup tool. The port includes a flange portion and a conduit portion projecting from the flange portion. The conduit portion includes a passage extending through the conduit portion. The method also includes laying up a plurality of reinforcing fiber tows on the layup tool to integrate the flange portion of the port with the plurality of reinforcing fiber tows. The plurality of reinforcing fiber tows is laid up to form at least a portion of a preform including the port for the composite storage tank. The method further includes introducing a matrix material to the preform and curing the preform including the matrix material to generate the composite storage tank.

Abstract: Airfoil vibration damping apparatus are disclosed. An example apparatus includes a metallic airfoil including a cavity, and a dilatant material disposed in the cavity to dampen vibrations of the metallic airfoil.

Abstract: A composition is provided. The composition includes a metal ion source and a leveling agent shown in Formula (I): R1—S—(R3—O)m—(R2—O)n—R2—(O—R3)m—S—R1. In Formula (I), two pieces of R1 are independently selected from a substituted or unsubstituted nitrogen-containing heterocyclic group, two pieces of R2 are independently substituted or unsubstituted chain alkylene, two pieces of R3 are independently substituted or unsubstituted chain alkylene, m is 0 or 1, and n is an integer greater than or equal to 2. The composition is applied to metal filling of a through hole on an electronic substrate, to uniformly fill through holes with different apertures, and lower a thickness of a surface metal layer and a dimple value.

Abstract: Techniques for implementing application-assisted VM provisioning operations, and in particular application-assisted live migration, are provided. In one set of embodiments, a hypervisor of a source host system can notify a guest application that the VM within which the guest application runs will be imminently live migrated from the source host system to a destination host system, prior to actually carrying out the live migration. In response, the guest application can execute one or more remedial actions that mitigate or avoid issues which may arise with respect to its runtime operation when the VM is stunned and switched over to the destination host system.

Abstract: A fluid flow sensor assembly for detecting material deposits in a fluid flow conduit includes a body and an array of pairs of temperature sensors disposed within the body, where each pair of temperature sensors is spaced a distance apart along a primary flow direction of the fluid flow conduit.

Abstract: This disclosure provides a semiconductor package including a chip, a drain lead frame assembly, a source lead frame assembly, and an insulation layer. The chip includes an opposite drain surface and source surface. The drain lead frame assembly includes a drain contact plate, a drain connecting section, and drain leads integrally formed into one piece. The drain contact plate is physically connected to the drain surface. An area of the drain contact plate is larger than that of the drain surface. The source lead frame assembly includes a source contact plate, a source connecting section, and source leads integrally formed into one piece. The source contact plate is physically connected to the source surface. An area of the source contact plate is smaller than that of the source surface. The insulation layer encapsulates the chip and surrounds the drain contact plate and the source contact plate.

Abstract: The present invention relates to the field of installation detection, in particular to an automatic detection system for installation of an intelligent door lock.

Abstract: A substance component detection apparatus and a method are provided to reduce absorption of an infrared signal by a window medium, thereby obtaining abundant fingerprint region signals. The apparatus includes: a sample pool, an infrared optical window, an infrared light source, and a detector. The infrared optical window has a first surface that faces an inner side of the sample pool and that is configured to be in contact with a to-be-detected substance, and a second surface exposed on an outer side of the sample pool. A protruding portion is formed between two adjacent grooves on the second surface, and any protruding portion has an incident surface and an emergent surface. An infrared signal emitted by the infrared light source is irradiated on the incident surface. The detector determines a component of the to-be-detected substance and/or content of the component.

Abstract: A sensor for detecting material deposits in a fluid flow conduit includes a body and an array of pairs of temperature sensors disposed within the body, where each pair of temperature sensors is spaced a distance apart along a primary flow direction of the fluid flow conduit.

Abstract: An indication box used with an electronic smart lock indicates if a public service room is in use. A color plate partially shown in a window moves vertically up and down with door handle motion. Unlike other indicators, the door handle and not lock actives use indication to avoid mishaps from forgetting to lock the door. The color plate is spring loaded with a V-shaped bottom. The color plate vertically moves by a cam having two L-shaped portions forming a V-shaped recess to initially secure the color plate's V-shaped bottom. Cam activation is through a dial head that moves with the door handle. When the color plate indicates use, the V-Shaped bottom rests on one of the cam's L-shaped portions. The color plate may also include braille markings. The indication box is used on a door's front portion with any electronic smart lock design and operates without electrical power.

Abstract: A gas turbine engine is provided. The gas turbine engine includes: a turbomachine; a fan including a plurality of fan blades rotatably driven by the turbomachine; a nacelle surrounding at least in part the plurality of fan blades of the fan; and a clearance control system including a control ring positioned at least partially within the nacelle, coupled to the nacelle, or both for control of a clearance gap between the plurality of fan blades and the nacelle.

Abstract: Morphable rotor blades for a turbine engine systems include a root portion and an airfoil portion having a morphable portion including a morphable material that changes shape in response to a stimulus.

Abstract: This application discloses a polymer, a leveling agent, and preparation methods thereof, an electroplating solution, and an electroplating method, and pertains to the field of electroplating technologies. The polymer includes a plurality of repeating units, and the repeating unit includes: a binary epoxy compound residual group and a nitrogen-containing group. The binary epoxy compound residual group is a residue formed after an epoxy bond of a binary epoxy compound is ring-opened. The nitrogen-containing group includes: an alkyl group, and a dimethylamine group and a nitrogen-containing heterocyclic group that are respectively connected to two ends of the alkyl group, where the dimethylamine group is further connected to the binary epoxy compound residual group through a single bond. The polymer is conducive to obtaining a high-coplanarity plating at a high current density, and is especially suitable for being used as a leveling agent in an electroplating solution.

Abstract: The present invention relates to the technical field of intelligent locks, and particularly to an intelligent lock management system, comprising an intelligent lock unit, wherein the intelligent lock unit comprises an intelligent lock, a lock control module and an identification terminal, and the intelligent lock unit is used for controlling the usage states of the intelligent lock; a server unit, wherein the server unit is communicatively connected with the intelligent lock unit, and the server unit is used for processing the receiving and sending of user information and control information. The server unit comprises an information writing module, a permission management module, an information deletion module and a data recording module. The permission management module is used for classifying and managing user permission data, and the user permission levels are at least 2. In the present invention, the permission management of the lock is divided into at least two levels.

Abstract: Cover plate connections for a hollow fan blade are disclosed. An example fan blade includes a hollow body including a first surface defining a cavity, the hollow body including an aperture extending through the first surface, the first surface including a notch, and a cover plate including a rib protruding from a second surface of the cover plate, the notch enclosing the rib to couple the cover plate to the first surface such that the cover plate encloses the aperture.