Abstract: Contact tips for a wire arc additive manufacturing (WAAM) system can include guide portions. Guide portions can include elongated portions with a first end and a second end; guide terminal parts attached to the first end of the elongated portion with terminal grooves. Terminal grooves can be formed between two protrusions. Terminal grooves can be configured to accommodate WAAM wires. Contact tips can further include inset portions. Inset portions can be configured to nest within the guide portion to hold the WAAM wire. When the inset portion is nested within the guide portion there can be a gap between the guide portion and the inset portion such that wire shavings generated during WAAM can be discharged.

Abstract: An internal conductor device for a waveguide radiator, in particular for a waveguide radiator has at least one slotted waveguide, at least one support rail, at least one dielectric unit that is arranged on the at least one support rail and comprises at least one dielectric element, and has at least one internal conductor that is arranged on the at least one dielectric unit, wherein the at least one internal conductor is fixed at least substantially mechanically on the at least one dielectric element and/or that the at least one dielectric element is fixed at least substantially mechanically on the at least one support rail.

Abstract: An expanding dowel-pin comprises an upper-collet, inside-conical bore with one or more upper-collet slits. The expanding dowel pin further includes a double-tapered cylinder with tapered cones tapering more narrowly from its middle. The expanding dowel pin further includes a lower collet with a lower-collet, inside-conical bore which has one or more lower-collet slits. The lower collet further includes a lower-collet, inside-straight bore with lower-collet internal screw threads. The upper collet, the double-tapered cylinder, and the lower collet are, in that order, configured to have a bolt pass therethrough. The lower-collet internal screw threads are configured to engage the bolt, such that, when the bolt is rotated a first direction relative to the lower collet, the upper collet and the lower collet are configured to be compressed together by the bolt. The compression by the bolt results in the expansion of the upper-collet and the lower-collet.

Abstract: A passively damped mechanical system is disclosed, for example for use in aerospace applications where vibration can adversely affect navigational and operational instruments. In one example, the passively damped mechanical system includes an end fitting of a strut used to connect a structural element to a payload. The end fitting may include outer and inner cylindrical hubs, with a space between the outer and inner cylindrical hub at least partially filled with a viscoelastic material. In a further example, the passively damped mechanical system includes legs used to connect a structural element to a bracket configured to support a payload. Each leg may include a hollow interior having a lattice structure to add strength and a viscoelastic material to provide passive damping.

Abstract: The present disclosure relates to a technology for providing high-quality treatment recipes that are optimized to the cultivation environment and to the disease or pest problem that has occurred. A platform server and method for providing disease and pest treatment recipes according to an embodiment of the present disclosure includes: an information collector configured to receive the image of a crop and information on the cultivation environment; an image analyzer configured to identify the disease or pest problem based on the image of the crop; and a recipe recommender configured to search a multiple number of treatment recipes from a recipe database based on the identified disease or pest problem and the information on the cultivation environment and provide the searched treatment recipes together with suitability ratings to a user.

Abstract: An antenna calibration system for a phased array antenna in accordance with one embodiment of the present disclosure generally includes: a beamformer corresponding to a subset of antenna cells of a plurality of antenna cells, wherein the beamformer includes a calibration section for comparing a reference signal to a non-reference signal and a first operating antenna within the subset of antenna cells corresponding with the beamformer. In some implementations, the first operating antenna is configured to deliver a first reference signal (mTx) from the beamformer to be received by a second operating antenna for comparison with a first non-reference signal (Rx) in the beamformer, and/or the first operating antenna is configured to deliver a second non-reference signal (Tx) from a third operating antenna for comparison with a second reference signal (mRx) in the beamformer.

Abstract: An optical flow odometer to determine the position of an object movable relatively to a surface is provided that includes a cluster of digital image sensors intended to be arranged on the movable object at respective reference positions and an electronic processing and control unit electrically connected with the digital image sensors and configured to: operate the digital image sensors in subsequent time instants during movement of the movable object so as to carry out a sequence of multiple digital image capture operations, in each of which the digital image sensors are operated to simultaneously capture respective digital images, and receive from the digital image sensors and process the digital images captured in the multiple digital image capture operations to compute either the positions of the individual digital image sensors or the position of the cluster of digital image sensors at one or more of the multiple digital image capture operations, and compute the position of the movable object at one or m

Abstract: A redundant system and a redundancy method of a fronthaul network are provided. The redundant system includes a first fronthaul multiplexer. The first fronthaul multiplexer includes a first group port, a second group port, a first cascade port, a first protect port, a first active port, and a first uplink circuit. The first uplink circuit includes a first summation circuit and a second summation circuit. A plurality of input terminals of the first summation circuit are coupled to the first group port and the second group port respectively, and an output terminal of the first summation circuit is coupled to the first protect port. A plurality of input terminals of the second summation circuit are coupled to the first cascade port and the output terminal of the first summation circuit respectively, and an output terminal of the second summation circuit is coupled to the first active port.

Abstract: A system aligns a 3D model of an environment with image frames of the environment and generates a visualization interface that displays a portion of the 3D model and a corresponding image frame. The system receives LIDAR data collected in the environment and generates a 3D model based on the LIDAR data. For each image frame, the system aligns the image frame with the 3D model. After aligning the image frames with the 3D model, when the system presents a portion of the 3D model in an interface, it also presents an image frame that corresponds to the portion of the 3D model.

Abstract: A process for the acquisition, by a spacecraft in terrestrial orbit, of a useful image of a space object in terrestrial orbit that is gradually approaching the spacecraft from an upstream distal region towards a proximal region is disclosed including controlling the orientation of an array-type detection sensor in order to orient it towards the space object located in the upstream distal region, acquiring, via the array-type detection sensor, a so-called detection image of the space object located in the upstream distal region, determining trajectory-tracking information on the basis of the detection image, controlling the orientation of an array-type acquisition sensor on the basis of trajectory-tracking information, in order to orient it towards the space object located in the proximal region, acquiring, via the array-type acquisition sensor, a useful image of the space object located in the proximal region.

Abstract: The system 100 can include a balloon system 110 and a set of spools 120. The system can optionally include a set of actuators 130. However, the system 100 can additionally or alternatively include any other suitable set of components. The system can function to facilitate balloon launch preparation and/or launch of a balloon vehicle system. The system can additionally function to facilitate controlled stand-up of a balloon.

Abstract: A system includes a plurality of satellites orbiting around a celestial body in a plurality of orbital planes. Each satellite includes an imaging device having a field of view (FOV) to capture an image of a sky that includes celestial image features of resident space object (RSO), stars, and/or planets. The satellite processor is configured to input the image data for each image into a pre-processing software pipeline to generate for each image a contrast-enhanced image data replica of each image, and an enhanced image data replica of each image, to receive from an output of a known-unknown RSO split data processing pipeline, a determination that a candidate RSO is a known RSO stored in an RSO catalog, or an unknown RSO, and to assign to the candidate RSO based on the determination, an RSO ID of the known RSO listed in the RSO catalog, or a new RSO ID.

Abstract: An orbital satellite has a pair of multi-axis booms including both thrusters for course/attitude adjustment and an end effector for grappling payloads and manipulating other tools and objects. The satellite may launch with a primary payload affixed to a bus and one or more secondary payloads affixed to an ESPA ring. Once in orbit, the end effector may be used to grapple the primary and/or secondary payloads and rearrange them on the bus. In further aspects, the end effector may be used to make bus repairs or take measurements, or hold tools that are used to make bus repairs or take measurements.

Abstract: An interface assembly for connecting an on-board propulsion system to a testing facility includes a support member configured for coupling to a manipulation system and a mounting member configured for coupling to the on-board propulsion system. A plurality of channels extends between and couples the mounting member to the support member.

Abstract: An adaptable lattice structure (110, 120, 130, 140) for a an Unmanned Aerial System, UAS, comprising: a plurality of lattice voxels (100, 102), wherein each lattice voxel (100, 102) comprises: a plurality of same shape elements (10, 12); wherein each same shape element (10, 12) comprises a plurality of connector elements (20), wherein the plurality of connector elements (20) are configured to temporarily couple a first same shape element (10) to at least a second same shape element (12); wherein the plurality of same shape elements (10, 12) are configured to be temporarily coupled so as to form a three dimensional lattice voxel (100); and wherein at least one of the connector elements (20) on a first lattice voxel (100) is configured to temporarily couple the first lattice voxel (100) to a second lattice voxel (102) after the formation of the first lattice voxel (100) and the second lattice voxel (102).

Abstract: The present invention relates to an assembly apparatus for assembling components of spacecraft in space. The assembly apparatus includes: a core platform; and a mobile platform including an end effector configured to perform an assembly or manufacturing task. The mobile platform is connected to the core platform by a tether. The core platform includes a body and a coupling element connected to and extendable from the body such that the coupling element may be spaced from the body of the core platform. The tether connects the mobile platform to the body via the coupling element. The assembly apparatus further includes an actuator configured to vary the length of the tether extending between the coupling element and the mobile platform to control the position of the mobile platform relative to the body of the core platform.

Abstract: A thermoelectric generator system includes a junction formed from at least one of a metal, an alloy, and a composite that is allowed to at least partially melt during system operation. The thermoelectric generator system may be configured to operate high temperatures greater than 1200 K. The thermoelectric generator system includes a liquid metal TEG junction including a first leg with a low Seebeck coefficient and a second leg with a high Seebeck coefficient. Each one of the first and second legs includes an electrically and thermally insulating reservoir for containing a liquid metal therein and an electrode for providing electrical and thermal conduction out of the liquid metal. The reservoir may include one or more features for disrupting convective flow to minimize unwanted heat transport.

Abstract: In one embodiment of the present disclosure, a satellite communication system includes a satellite constellation including a plurality of satellites in non-geosynchronous orbit (non-GEO), wherein at least some of the plurality of satellites travel in a first orbital path at a first inclination, and an end point terminal having an earth-based geographic location, the end point terminal having an antenna system defining a field of regard for communicating with the satellite constellation, wherein the field of regard is a limited field of regard, wherein the field of regard is tilted from a non-tilted position to a tilted position, and wherein the tilt angle of the tilted position is a function of the latitude of the geographic location.

Abstract: Various embodiments of the present technology relate to satellite tasking systems and methods. More specifically, embodiments include an operations center configured to receive a tasking order from a client and to generate satellite instructions for the satellite based on the tasking order. In some examples, a security tag is generated and associated with the tasking order. The security tag is correlated with the client on a remote server.