Abstract: The present invention relates to arrangement for releasably securing a weapon. Said arrangement comprises a fixed support member and a locking member spring loadedly and movably connected to the fixed support member such that when the weapon is pressed towards the locking member, the locking member is moved relative to the support member from a closed position to an open position so that said weapon is allowed to be introduced through an opening of the locking member into a holding position of the locking member, and such that, when the weapon is positioned in said holding position, the spring loaded locking member is returned to said closed position by means of a spring force. Said arrangement may further comprise an actuator arranged for moving the locking member against a spring force into said open position for allowing said weapon to be released. The present invention also relates a vehicle.

Abstract: A projectile is outfitted with a target finder and is intended to be fired from a launching device and includes one or several fins where the fins, upon being extended, cause the projectile to be urged into a controlled oscillating movement. A fuse is also provided.

Abstract: An apparatus for converting frequency of signals includes a first switch having a first input terminal to receive a first input signal, a first output terminal, and a second output terminal, wherein the first switch couples the first input terminal to either the first or the second output terminal. A mixer circuit is coupled to the second output terminal, and is to mix the first input signal to a second input signal, to generate a modified input signal. A filter circuit includes a plurality of programmable filters, to receive the modified input signal and output a filtered signal. A second switch has (i) a second input terminal coupled to the first output terminal, (ii) a third input terminal to receive the filtered signal, and (iii) a third output terminal, wherein the second switch is to couple the third output terminal to either the second or third input terminal.

Abstract: Methods and apparatus for detecting a modulating element of an object are described in which signal values are obtained from one or more optical detectors. A determination is made if there is a time dependent variation in the obtained signal values at the one or more optical detector and a modulating element is detected based on the determination.

Abstract: A method of manufacturing a structurally competent, EMI-shielded IR window includes using a mathematical model that combines the Sotoodeh and Nag models to determine an optimal thickness and dopant concentration of a doped layer of GaAs or GaP. A slab of GaAs or GaP is prepared, and a doped layer of the same material having the optimal thickness and dopant concentration is applied thereto. In embodiments, the doped layer is applied by an HVPE method such as LP-HVPE, which can also provide enhanced GaAs transparency near 1 micron. The Drude model can be applied to assist in selecting an anti-reflective coating. If the model predicts that the requirements of an application cannot be met by a doped layer alone, a doped layer can be applied that exceeds the required IR transparency, and a metallic grid can be applied to improve the EMI shielding, thereby satisfying the requirements.

Abstract: IR window slabs of GaP greater than 4 inches diameter, and of GaAs greater than 8 inches diameter, are grown on a substrate using Hydride Vapor Phase Epitaxy (HVPE), preferably low pressure HVPE (LP-HVPE). Growth rates can be hundreds of microns per hour, comparable to vertical melt growth. GaAs IR windows produced by the disclosed method exhibit lower absorption than crystals grown from vertical melt near 1 micron, due to reduced impurities and reduced growth temperatures that limit the solubility of excess arsenic, and thereby reduce the “EL2” defects that cause high absorption near one micron in conventional GaAs boules. Silicon wafers can be used as HVPE substrates. For GaAs, layers of GaAsP that vary from 0% to 100% As can be applied to the substrate. EMI shielding can be applied by adding a dopant during the final stage of growth to provide a conductive GaAs or GaP layer.

Abstract: A method of growing large GaAs or GaP IR window slabs by HVPE, and in embodiments by LP-HVPE, includes obtaining a plurality of thin, single crystal, epitaxial-quality GaAs or GaP wafers, cleaving the wafers into tiles having ultra-flat, atomically smooth, substantially perpendicular edges, and then butting the tiles together to form an HVPE substrate larger than 4 inches for GaP, and larger than 8 inches or even 12 inches for GaAs. Subsequent HVPE growth causes the individual tiles to fuse by optical bonding into a large “tiled” single crystal wafer, while any defects nucleated at the tile boundaries are healed, causing the tiles to merge with themselves and with the slab with no physical boundaries, and no degradation in optical quality. A dopant such as Si can be added to the epitaxial gases during the final HVPE growth stage to produce EMI shielded GaAs windows.

Abstract: A method of making GaP window slabs having largest dimensions of greater than 4 inches and GaAs IR window slabs having largest dimensions of greater than 8 inches, includes slicing and dicing at least one smaller GaAs or GaP single crystal boule, which can be a commercial boule, to form a plurality of rectangular slabs. The slabs are ground to have precisely perpendicular edges, which are polished to be ultra-flat and ultra-smooth, for example to a flatness of at least ?/10, and a roughness Ra of less than 10 nanometers. The slab edges are then aligned and fused via optical-contacting/bonding to create a large GaAs or GaP slab having negligible bond interface losses. A conductive, doped GaAs or GaP layer can be applied to the window for EMI shielding in a subsequent vacuum deposition step, followed by applying anti-reflection (AR) coatings to one or both of the slab faces.

Abstract: A method, system, and computer readable medium for performing a scalar agile parameter estimation for continuous-valued univariate parameters to estimate and track a likelihood of a measurement where a parameter distribution domain of an emitter is unknown, comprising: receiving a signal from an emitter source; measuring a feature of said signal; calculating a likelihood of said feature by a feature likelihood tracking model; adding a new parameter source model by creating a node, based on said feature likelihood; establishing a likelihood of a measurement using a measurement likelihood tracking model; starting a new feature track, based on said measurement likelihood; and assigning said feature to a track.

Abstract: The present invention relates to a mine safety arrangement and a method for facilitating mine safe operation of a vehicle. Said vehicle comprises a vehicle body and a vehicle body connected ground engaging arrangement for moving the vehicle. Said vehicle body comprises a bottom portion and an inner space having a floor portion associated with said bottom portion. Said inner space comprises a mine safe level at a predetermined distance from said floor portion. Persons housed in said inner space having all body portions at or above said mine safe level are expected to be safe should the vehicle be subjected to a mine. Said mine safety arrangement comprises a sensor arrangement configured to provide signals at said mine safe level so that body portions crossing said mine safe level are detected by means of said signals for alerting persons that body portions crossed said mine safe level.

Abstract: According to an aspect of the invention, there is provided an anti torpedo system, suitable for use on a ship, comprising operably linked; a combat management system comprising a high frequency hull mounted sonar, to determine the current positon and track (depth and underwater trajectory) of a torpedo, a plurality of (direct fire) munitions, each comprising an ogive portion terminating with a water drag reduction element, an energetic payload and a programmable fuze for initiating said payload, an auto-fuze setting system, for setting the time of initiation of the programmable fuze, and a gun management system for: receiving the current position and track of said torpedo from the combat management system, and aiming and firing of said munitions, based on the received position and track of the torpedo, such as to cause each fired munition to arrive at or proximate to said torpedo and to cause detonation of the payload.

Abstract: GaAs IR window slabs having largest dimensions that are greater than 8 inches, and preferably greater than 12 inches, are grown using the Horizontal Gradient Freeze (HGF) method. Heat extraction is simplified by using a shallow horizontal boat that is only slightly deeper than the desired window thickness, thereby enabling growth of large slabs while also minimizing material waste and fabrication cost as compared to slicing and shaping thick plates from large, melt-grown boules. Single crystal seeds can be used to optimize the final orientation of the slabs and minimize secondary nucleation, thereby maximizing yield. A conductive doped GaAs layer can be applied to the IR window slab to provide EMI shielding. The temperature gradient during HGF can be between 1° C./cm and 3° C./cm, and the directional solidification can be at a rate of between 0.25 mm/h and 2.5 mm/h.

Abstract: In some examples, a computer-implemented method for generating a pipe layout for a platform comprises receiving design data representing a pipe geometry defining an initial pipe layout, generating, using the design data, geometry data representing a set of pipework runs comprising at least one pipe section for the pipe layout, a pipe section defined by a conduit comprising a point of ingress for the conduit in fluid communication with a point of egress for the conduit, determining, using the design data, a set of pipe layout features, generating, using the geometry data, an editable simulated pipe layout, receiving data representing at least one of a component for the editable simulated pipe layout, an annotation for the editable simulated pipe layout, an additional pipework run, and a corrected pipework run, and generating, using the editable simulated pipe layout, output layout data defining the pipe layout for the platform.

Abstract: A rotor unit assembly includes a rotor unit having a chamber and a rotor located within the chamber. The rotor has a piston which extends radially outward from the main body of the rotor; and a valve flange with an aperture. The rotor unit further comprises a rotatable hub, with a cavity configured to receive the piston. The rotor unit further comprises a first low pressure port provided in a path described by the piston; a first high pressure port positioned in a path described by the valve flange aperture around the clearance volume; and a second high pressure port positioned in a path described by the cavity around the hub axis.

Abstract: A system comprises a camera for capturing an image, at least one processor and at least one memory, the at least one memory storing instructions configured to cause the processor to: obtain an image of a scene captured using the camera, the scene comprising a footprint of a user of the system; identify the footprint in the image; identify a first plurality of reference points each having a fixed position relative to the footprint in the image; identify a second plurality of reference points each having a fixed position relative to a three-dimensional model of the user's foot constructed based on at least one known dimension of the user's foot; determine a transformation matrix by mapping the second plurality of reference points of the three-dimensional model to the first plurality of reference points; and determine, based on the transformation matrix, a three-dimensional position of the camera relative to the footprint in the scene at the time of capturing the image.

Abstract: Techniques are provided for automatic gain control. A methodology implementing the techniques according to an embodiment includes imparting, by a first adjustable attenuator, a first attenuation to a received radio frequency signal to generate a first attenuated signal. The first attenuation is based on a first control signal. The method also includes imparting, by a second adjustable attenuator, a second attenuation to the first attenuated signal to generate a second attenuated signal. The second attenuation is based on a second control signal. The method further includes converting, by an analog-to-digital converter, the second attenuated signal to a digital signal and measuring, by a processor based system, the ratio of peak power of the digital signal to average power of the digital signal, to generate a peak-to-average ratio (PAR) value. The first control signal and the second control signal are generated based in part on the PAR value.

Abstract: Disclosed is a brake arrangement for a tracked vehicle comprising a brake housing. Said brake arrangement is journaled in bearings in connection to a drive unit driven drive axle configured to rotate a drive wheel member. Said brake arrangement comprises a set of ring shaped friction elements arranged about said drive axle and configured to be pressed together in the axial direction for providing a braking function. Said brake arrangement further comprises a ring shaped parking brake piston device coaxially arranged around said drive axle in connection to a radially outer portion of said set of friction elements. Said parking brake piston device is configured to provide pressure in the axial direction against said radially outer portion of said set of friction elements based on a parking brake action so as to press said elements together for preventing rotation of said drive axle, preventing movement of drive wheel member.

Abstract: Disclosed is a brake arrangement for a tracked vehicle. The brake arrangement comprises a brake housing. Said brake arrangement is journaled in bearings in connection to a drive unit driven drive axle configured to rotate a drive wheel member. Said brake arrangement comprises a set of ring shaped friction elements arranged about said drive axle and configured to be pressed together in the axial direction for providing a braking function. Said set of friction elements comprises a first end friction element being the outermost friction element against which pressure is configured to be provided for said braking function. Said first end friction element has a thickness in the axial direction which is thicker than the remaining set of friction elements so as to facilitate distributing an even pressure on said set of friction elements when said set of friction elements are pressed together for efficient friction braking function.

Abstract: The invention relates to a track assembly for a tracked vehicle. Said track assembly comprises a track support beam configured to support road wheels, a drive wheel member, and a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement comprises a drive unit for driving said drive wheel member, wherein said drive arrangement comprises a drive axle being configured to be coaxially arranged relative to a centre axis of said drive wheel member for rotating said drive wheel member. Said drive unit is configured to be journaled in bearings to a portion of the drive axle. Said drive unit comprises a torque arm configured to be connected to said track support beam so as to essentially prevent rotation of said drive unit about said centre axis.

Abstract: A laser canard test system (LCTS) that includes a test bench assembly, at least one laser controller operably engaged with the test bench assembly, at least one laser sensor device operably engaged with the test bench assembly and in electrical communication with the at least one laser controller, and a canard testing protocol in logical communication with the at least one laser controller and the at least one laser sensor device to enable the at least one laser controller to command the at least one laser device to measure at least one canard on a payload free from contacting the at least one canard of the payload.