FRKelly

A launch system comprises a receiver and fire control system. The fire control system comprises a ballistics computation module and first RF transceiver. A launch barrel has a longitudinal axis and an internal diameter configured to launch projectiles having a first caliber. A launch tube system is received within the launch barrel and includes an outer shell coaxially secured to an inner launch tube which define an annular gap receiving a flexible circuit assembly including a second RF transceiver. A barrel insert within the inner launch tube defines a launch bore having a second internal diameter corresponding to a second caliber. The first RF transceiver transmits a first RF signal for programming a programmable munition having the second caliber. The second transceiver receives the first RF signal via the second RF transceiver and transmits a second RF signal for programing the munition when received within the launch tube system.

An apparatus for providing electrical power to and communicating data and/or control signals to a helmet accessory device includes a control module (20) attachable to the helmet (100) and including a processor, power supply interface, and one or more control module connectors (32). One or more helmet side rail assemblies (104) have a plurality of interface slots (18). At least one insert includes a connector element and is adapted for operative coupling with the helmet accessory device. The processor includes a communication interface for exchanging data and/or control signals with the helmet accessory device via the insert connector element. At least one cable (34) comprises a first connector end adapted to couple a control module connector and a second connector end configured to couple to the insert connector element. Each of the one or more helmet side rail assemblies has an internal space configured for routing at least a portion of the cable.

The present invention relates to the use of grinding aids comprising Aluminum sulfate, Alum, and/or Na salt, K salt, or Li salt of a hydroxycarboxylic acid, wherein the hydroxycarboxylic acid comprises citric, lactic, glycolic, tartaric, acetic, or malic acid, for producing Ground Activated Cementitious Precursor Material (GACPM) by co-grinding with granulated slag, such as a steel industry waste, Granulated Blast Furnace Slag (GBFS), and the products provided therefrom. The use of the one or more grinding aids reduces the grinding time by about 10-33%, improves particle fineness by about 10-33%, and/or reduces carbon emissions (CO<2>) associated with such processes by about 10-33%,, thereby significantly enhancing efficiency. Additionally, it improves particle morphology and activates amorphous glass particles in the GACPM (compared to conventional Ground Granulated Blast Furnace Slag (GGBFS), increasing their reactivity with alkali activators in geopolymer cements or with calcium hydroxide when used with Portland cement applications. This activation, due to use of GACPM instead of GGBFS, leads to compressive strength gains of about 5-33% in activated geopolymer cement mortar/grout/concrete and about 5-33% in Portland GACPM cement blends, all while significantly reducing energy usage, costs, and carbon emissions.

A gear includes a set of circular arc teeth disposed on a peripheral surface of the gear. The pitch of the set of circular arc teeth defines a first tooth thickness angle θ and each tooth is defined by a main tooth curvature, a tip relief curvature, a tip curvature, and a second tooth thickness angle θ' = θ(1-x), where x is a positive value. A gear assembly includes an internal gear having N teeth and an eccentric gear having N-1 teeth. At least one of the internal gear or the eccentric gear includes a set of circular arc teeth disposed on a peripheral surface of the at least one of the internal gear or the eccentric gear include teeth having a first tooth thickness angle θ and a second tooth thickness angle θ' = θ(1-x), wherein x is a positive value.

A two-legged kickstand bicycle vehicle mount is provided. The dual kickstand bicycle vehicle comprising a bicycle wheel retaining member and a pair of laterally spaced kickstand retaining members longitudinally offset of the bicycle wheel retaining member.

Various embodiments and methods relating to an optical fiber alignment and splicing system are described herein. The optical fiber alignment and splicing system includes a first rotation stage having a first central axis, a first end, and a second end, and a second rotation stage having a second central axis, a third end, and a fourth end. The first central axis extends from the first end to the second end of the first rotation stage, and the second central axis extends from the third end to the fourth end. The first rotation stage includes a first optical fiber channel extending from the first end of the first rotation stage to the second end of the first rotation stage, and the second rotation stage includes a second optical fiber channel extending from the third end of the second rotation stage to the fourth end of the second rotation stage.

The present disclosure provides a transcatheter device including: an anchor (200) anchored to an inner wall of an inferior vena cava (IVC); and a main shaft (10) having a proximal shaft (110) that extends from the anchor (200) toward a tricuspid valve (TV) along a cavotricuspid isthmus (CTI) of a heart, a middle shaft (120) that extends from the proximal shaft (110), passes through the TV, and has a spacer (300) preventing a reverse flow in the TV mounted thereon, and a distal shaft (130) that extends from the middle shaft (120) into a pulmonary artery (PA), and the distal shaft (130) of the main shaft (100) includes a first distal part (131) that extends in a curved shape having a predetermined curvature from the middle shaft (120), a second distal part (132) that extends from the first distal part (131) and bends at point B1, which is one point that is over and surrounds an aorta, toward the proximal shaft (110), and a third distal part (133) that extends from the second distal part (132) toward the proximal shaft (110).

Optical elements that efficiently propagate x-ray radiation over a desired energy range and reject radiation outside the desired energy range are presented herein. In one aspect, one or more optical elements of an x-ray based system include an integrated optical filter including one or more material layers that absorb radiation having energy outside the desired energy band. In general, the integrated filter improves the optical performance of an x-ray based system by suppressing reflectivity within infrared (IR), visible (vis), ultraviolet (UV), extreme ultraviolet (EUV) portions of the spectrum, or any other undesired wavelength region. In a further aspect, one or more diffusion barrier layers prevent degradation of the integrated optical filter, prevent diffusion between the integrated optical filter and other material layers, or both. In some embodiments, the thickness of one or more material layers of an integrated optical filter vary over the spatial area of the filter.

A system comprising: an eyewear device for displaying a ballistic solution, the eyewear device comprising: a lens portion; a display configured to be visible within a field of view of a user wearing the eyewear device; communication electronics built into the eyewear device and operable to receive a remote signal representative of a ballistic solution from a weapon accessory device; display driver electronics built into the eyewear device and operable to display one or more indicia representative of the ballistic solution in human viewable form; and a camera external to the eyewear device, wherein the camera is operable to track eye movements of the user when the user is wearing the eyewear device and the eyewear device is located within a field of view of the camera.

Systems and methods for reducing the data volume downlinked from a spacecraft to a ground station are disclosed. A processing system onboard the spacecraft captures image data from one or more imaging sensors and forms an image stack of spectral bands that is partitioned into tile stacks corresponding to common spatial regions. A trained artificial intelligence model performs inference on each tile stack to generate a quantitative tile stack score indicative of predicted usefulness for one or more mission objectives. Based on the tile stack scores, the processing system selects for each tile stack a lossless compression action, a lossy compression action, or a discarding action, compresses tile stacks according to the selected actions, assembles compressed tile data into a compressed image data file, and transmits the compressed image data file to the ground station over a downlink communication channel.