Abstract: An irradiation device for additively manufacturing three-dimensional objects may include a beam generation device configured to generate an energy beam, an optical modulator including a micromirror array disposed downstream from the beam generation device, and a focusing lens assembly disposed downstream from the optical modulator. The micromirror array may include a plurality of micromirror elements configured to reflect a corresponding plurality of beam segment of the energy beam along a beam path incident upon the focusing lens assembly. The focusing lens assembly may include one or more lenses configured to focus the plurality of beam segments such that for respective ones of a plurality of modulation groups including a subset of micromirror elements, a corresponding subset of beam segments are focused to at least partially overlap with one another at a combination zone corresponding to the respective modulation group.

Abstract: An additive manufacturing apparatus includes a stage configured to hold a component. A radiant energy is device operable to generate and project radiant energy in a patterned image. An actuator is configured to change a position of the stage relative to the radiant energy device. A deposition assembly is upstream of the stage and configured to deposit a resin on a resin support. The deposition assembly includes a reservoir housing configured to retain a volume of resin between the upstream wall and the downstream wall. The deposition assembly also includes an application device operably coupled with the reservoir housing. A computing system is operably coupled with the application device. The computing system is configured to intermittently initiate a flush operation between successive layers of the component, wherein the application device is moved from a first position to a second position during the flush operation.

Abstract: An additive manufacturing apparatus can include a stage configured to hold one or more cured layers of resin that form a component. A radiant energy device can be operable to generate and project radiant energy in a patterned image. An actuator can be configured to change a relative position of the stage relative to the radiant energy device. A reclamation system can be downstream of the stage and can be configured to remove at least a portion of the resin from a resin support. The reclamation system can include a first collection structure configured to accept a resin support therethrough along a resin support movement direction. A first scraper is positioned within the first collection structure. The first scraper has an elongation axis that is offset from the resin support movement direction by an offset angle that is less than 90 degrees.

Abstract: An additive manufacturing apparatus includes a support plate and a stage configured to hold a component formed of one or more cured layers of a resin. An actuator assembly is configured to change a relative position of the stage relative the support plate. A radiant energy device is positioned opposite to the stage such that it is operable to generate and project radiant energy in a pattern. A peeling device is positioned downstream of the window. The actuator assembly is configured to move the stage simultaneously with a resin support over the peeling device in an X-axis direction.

Abstract: An additive manufacturing apparatus can include a stage configured to hold a component formed by one or more layers of resin. A support plate can be positioned above the stage. A radiant energy device can be positioned above the stage. The radiant energy device can be operable to generate and project energy in a predetermined pattern. A feed module can be configured to operably couple with a first end portion of a resin support and can be positioned upstream of the stage. A take-up module can be configured to operably couple with a second end portion of the resin support and can be positioned downstream of the stage.

Abstract: An additive manufacturing apparatus includes a support plate defining a window and a resin support configured to support an uncured layer of resin. A stage is configured to hold one or more cured layers of the resin to form a component positioned opposite a support plate. A radiant energy device is positioned on an opposite side of the resin support from the stage and is operable to generate and project radiant energy in a patterned image through the window. The stage is configured to move simultaneously with the resin support from a first position to a second position in an X-axis direction.

Abstract: An additive manufacturing apparatus includes a feed module and a take-up module that are configured to operably couple with a foil. A stage is configured to hold one or more cured layers of a resin that form a component. A radiant energy device is positioned opposite to the at least one stage. The radiant energy device is operable to generate and project radiant energy in a predetermined pattern. An actuator is configured to change a relative position of the at least one stage and the foil. An accumulator is positioned between the feed module and the take-up module. The accumulator is configured to retain an intermediate portion of the foil to allow a first portion of the foil upstream of the accumulator to move at a first speed and a second portion of the foil downstream of the accumulator to move at a second speed during a defined time period.

Abstract: A turbomachine airfoil element includes an airfoil having pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 0.60-0.70 inch (15.3-17.8 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span and is in a range of 0.90-1.00 inch (22.9-25.5 mm). The airfoil element includes at least two of a first mode with a frequency of 5327±10% Hz, a second mode with a frequency of 8393±10% Hz, a third mode with a frequency of 16289±10% Hz, a fourth mode with a frequency of 25049±10% Hz and a fifth mode with a frequency of 27423±10% Hz.

Abstract: An airfoil has pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 0.70-0.83 inch (17.8-21.1 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span is in a range of 0.34-0.45 inch (8.5-11.5 mm). The airfoil element includes at least three of a first mode with a frequency of 3748±15% Hz, a second mode with a frequency of 6416±15% Hz, a third mode with a frequency of 14418±15% Hz, a fourth mode with a frequency of 17417±15% Hz, a fifth mode with a frequency of 19326±15% Hz and a sixth mode with a frequency of 26648±15% Hz.

Abstract: The present invention relates generally to a method and apparatus for deploying and/or retrieving an object (e.g., a vena cava filter) in a cavity (e.g., a vena cava) using a system configured to: (i) maintain grip of the unsheathed object in the cavity until deliberately released, (ii) prevent premature release of the object in the cavity, and/or (iii) facilitate retrieval by first everting said object, then withdrawing the object through a guiding catheter (e.g., retrieval via eversion).

Abstract: An authorized user obtains a packaging license that grants permission to use a particular recording device to generate multimedia content in accordance with specified license terms. The packaging license includes a content key that is used to encrypt the multimedia content at the point of capture on the recording device. The encrypted multimedia content can be transmitted via unsecure channels (for example, via electronic mail) to a networked content repository or an intended recipient. For playback, an authorized user obtains a playback license that grants permission to decrypt and playback the multimedia content using a particular playback device. An authorization server and a key management server are used to manage which users are entitled to receive a license, and to define the terms of the granted licenses. A record of the granted authorizations and licenses is maintained, thereby allowing access to a given content item to be audited.

Abstract: The present disclosure is directed toward systems and methods for identifying and abating padding oracle attacks. One or more embodiments described herein identify and abate padding oracle attacks without necessitating any changes or upgrades to an existing encryption system by providing an intermediate service that can intercept communications from a client-computing device intended for a padding oracle.

Abstract: The present disclosure includes airfoils for use in gas turbine engines. The airfoils comprise a fillet having a height of greater than 20% of the airfoil body span length. The airfoil may be a blade or a vane. Further, such airfoils may be used in the high pressure compressor section, as well as other gas turbine engine sections.

Abstract: An authorized user obtains a packaging license that grants permission to use a particular recording device to generate multimedia content in accordance with specified license terms. The packaging license includes a content key that is used to encrypt the multimedia content at the point of capture on the recording device. The encrypted multimedia content can be transmitted via unsecure channels (for example, via electronic mail) to a networked content repository or an intended recipient. For playback, an authorized user obtains a playback license that grants permission to decrypt and playback the multimedia content using a particular playback device. An authorization server and a key management server are used to manage which users are entitled to receive a license, and to define the terms of the granted licenses. A record of the granted authorizations and licenses is maintained, thereby allowing access to a given content item to be audited.

Abstract: An authorized user obtains a packaging license that grants permission to use a particular recording device to generate multimedia content in accordance with specified license terms. The packaging license includes a content key that is used to encrypt the multimedia content at the point of capture on the recording device. The encrypted multimedia content can be transmitted via unsecure channels (for example, via electronic mail) to a networked content repository or an intended recipient. For playback, an authorized user obtains a playback license that grants permission to decrypt and playback the multimedia content using a particular playback device. An authorization server and a key management server are used to manage which users are entitled to receive a license, and to define the terms of the granted licenses. A record of the granted authorizations and licenses is maintained, thereby allowing access to a given content item to be audited.

Abstract: A printer apparatus and a method for continuously printing a three-dimensional (3D) object. The printer apparatus has an elongated container for containing build fluid comprising a monomer from which the 3D object is made. A means for continuous conveying a build platform has a build surface that descending down into the build fluid. A matrix of light emitting elements are disposed above the elongated container, and emit a predetermined pattern of a reactive light toward the continuously conveyed build surface and at the upper surface of the build fluid. The reactive light has a predetermined pattern that polymerizes and/or agglomerates a portion of the upper surface of the build fluid into a build material having a build pattern comprising the build material. The build platform can have a plurality of build surface segments attached in series along a continuous conveyor.

Abstract: The present invention relates generally to a method and apparatus for deploying and/or retrieving an object (e.g., a vena cava filter) in a cavity (e.g., a vena cava) using a system configured to: (i) maintain grip of the unsheathed object in the cavity until deliberately released, (ii) prevent premature release of the object in the cavity, and/or (iii) facilitate retrieval by first everting said object, then withdrawing the object through a guiding catheter (e.g., retrieval via eversion).

Abstract: The present invention relates generally to a method and apparatus for deploying and/or retrieving a vena cava filter in a vena cava using a system configured to: (i) maintain grip of the unsheathed filter in the vena cava until deliberately released, (ii) prevent premature release of the filter in the vena cava, and/or (iii) facilitate retrieval by first everting the filter, then withdrawing the filter through a guiding catheter (e.g., retrieval via eversion).