Abstract: A drive arrangement for manipulating a vehicle control surface, comprises: a first drive; a second drive; an output member for connecting to the vehicle control surface; first engaging means for selectively engaging and disengaging the first drive and the output member; and second engaging means for selectively engaging and disengaging the second drive and the output member, wherein the first engaging means comprises a first epicyclic gearbox.

Abstract: A door assembly for a payload bay (10) having an opening (12), the door assembly comprising at least one door (20, 220). The at least one door comprises: a panel section (22, 222) having a first end (24, 224) and a second end (26, 226); and a first mounting member (30, 230) arranged orthogonally to the panel section at the first end and having a first engagement feature (31, 231) having a rotational axis (18, 218) about which the panel section is arranged to rotate. The engagement feature is arranged to engage with a first fixing member (16, 216) on one side of the payload bay to rotatably couple the panel section to the payload bay. The at least one door is arranged to translate between a closed configuration, in which the panel section is arranged in the same plane as the opening, and an open configuration, in which the panel section is arranged at at least 90 degrees to the plane of the opening, by rotating about the rotational axis.

Abstract: A reactor control system (100) for a nuclear fission reactor system comprising a nuclear reactor unit (300) having a reactor core (302) with a central axis (320) extending along the length of the reactor core (302). The nuclear reactor unit (300) comprises a first region (310) provided in the reactor core (302) and a second region (312) provided outside of the reactor core (302). The control system (100) comprises a control duct (200) having a first portion (210) configured to extend through the first region (310) and a second portion (220) configured to extend through the second region (312). The duct (200) is filled with a series of control units (400), each of the control units (400) configured to travel along the control duct (200).

Abstract: A heat engine system (100, 1100). The heat engine system (100, 1100) comprises a compressor (300) having an inlet (302) and an outlet (304), a heat source (400) having an inlet (402) and an outlet (404), and a turbine (500) having an inlet (502) and an outlet (504). The compressor (300), heat source (400) and turbine (500) define part of a working fluid flow circuit ( ). The heat engine system further comprises a housing (600) which is operable to be sealed to define a reservoir (602) in which the compressor (400), heat source (400), turbine (500) and working fluid flow circuit (700) are located. The working fluid flow circuit (700) further comprises a compressor-to-heat-source duct (800) which extends between the compressor outlet (304) and the heat source inlet (402), a heat-source-to-turbine duct (802) extends between the heat source outlet (404) and the turbine inlet (502), and a turbine-to-compressor duct (804) extends between the turbine outlet (504) and the compressor inlet (302).

Abstract: A display system (100) for displaying on a least two different types of display a view of an environment in a real world situation, the system comprising: a first display (200) of a first type; a second display (202) of a second type which is different from the first type; a control system (100, 108) for controlling how information is to be displayed between the first display (200) and the second display (202) and configured to: determine (500) there is available symbology relating to the real world situation; determine (502) a positionally correct location the symbology would occupy if visible; determine (504) that at least one of the first display (200) and the second display (202) are displaying a view that corresponds with the positionally correct location of where the symbology, or portions of the symbology, would occupy if visible; cause (512) the symbology, or portions of the symbology, to be displayed, in the positionally correct location in the at least one of the first display (200) and the second d

Abstract: According to a first aspect of the invention, there is provided a programmable system for a munition, comprising: an electroacoustic transducer, arranged to receive an acoustic signal comprising data, and convert that signal into an electrical signal comprising data; a processor, arranged to receive and process the electrical signal comprising data, and to use that data in programming of the programmable system.

Abstract: An integrity monitor for monitoring integrity of image sensor data. The integrity monitor comprises an image sensor configured to generate image sensor data, wherein the image sensor data includes an image representative of a scene and a plurality of optically dark pixels in a predetermined position relative to the image. The integrity monitor further comprises a controller configured to: analyse (403) one or more characteristics of at least one of the plurality of optically dark pixels; and determine (405) a presence of a fault in the image sensor data based at least in part on the one or more characteristics of the at least one of the plurality of the optically dark pixels to be output to enable mitigation of the fault.

Abstract: A method and apparatus for predicting failure of an engineering asset based on real-time data. The system comprises a plurality of sensors for measuring data on the engineering asset. The method of predicting failure comprises receiving a data record comprising data on the engineering asset collected from the plurality of sensors at time t, generating, using a trained machine learning algorithm, a probability PF that the received data record indicates that the engineering asset is in a faulty state; determining what number of data records received in a look-back time Lt are indicative of the engineering asset being in a faulty state, wherein the look-back time Lt is a time period occurring before the time t at which the data record was collected; and predicting a probability of the engineering asset failing during a horizon time Ht, wherein the horizon time Ht is a time period after time t at which the data record was collected.

Abstract: In some examples, a method for generating a set of slot activation configurations for a holographic radial line slot antenna array comprising multiple slots defining a preconfigured slot pattern, each slot activation configuration defining a beam pattern for a signal to be emitted by the antenna, comprises generating a measure for the mutual coupling between the multiple slots in the presence of a signal to be applied to the antenna, the measure comprising a set of scattering parameters defining a scattering matrix for the antenna, using the measure for the mutual coupling, generating a set of impedance parameters for the array, controlling the resonance of at least one of the multiple slots by regulating a value of capacitance of a variable capacitance device provided across the slot, measuring a value for antenna gain of a beam pattern associated with the value of capacitance, selecting a final value of capacitance resulting in the highest measure of gain for the beam pattern, and selecting a slot activatio

Abstract: A fabrication system (100) for the manufacture of a support frame (10) for a pressure vessel (12). The support frame (10) is fabricated from a plurality of sub-elements (202, 204). The fabrication system comprises a jig assembly (300), a clamping system (400) mounted on the jig assembly (300) and the jig assembly (300) being rotatably mounted about a rotation axis (302), and extending out radially from the rotation axis (302) to an outer edge (304). A plurality of workstations (600, 602, 604) are arranged around the outer edge (304) of the jig assembly (300), located and configured to perform operations on the sub-elements (202, 204). The plurality of workstations (600, 602, 604) are mounted in a fixed position, the jig assembly (300) being rotatable about the rotation axis (302) relative to the workstations (600, 602, 604).

Abstract: A waveguide to expand image bearing light in at least one dimension is disclosed. The waveguide comprises: an input coupling region configured to couple and input image bearing light into the waveguide; and an output coupling region comprising at least a first microstructure to the expand image bearing light in the first dimension, and output the image bearing light. A first waist point of the image bearing light in a first axis is located at a different location in the waveguide than a second waist point of the image bearing light in a second axis in the waveguide, the second axis orthogonal to the first axis. FIG. 4b to be published with the application.

Abstract: According to an aspect of the invention, there is provided a system for reducing water-entry shock for a projectile entering the water, the system comprising: a first component, the first component being moveable to a target region for which water-entry shock is to be reduced, and arranged to interact with the water, for reducing water-entry shock for a second component; a second component in the form of the projectile, arranged to enter the water in the region for which water-entry shock has been reduced by the first component, functionality of the second projectile component being triggered by the water.

Abstract: A method of manufacturing an article is described. At S102, the method comprises obtaining a first layer having a first face and a reverse second face, wherein the first layer comprises and/or is a first metal and wherein the first metal is a heat treatable first aluminium alloy. At S104, the method comprises providing a second layer on the first face of the first layer by cold spraying particles comprising a second metal thereupon, wherein the second metal is a second aluminium alloy. At S106, the method comprises depositing a third layer on the second layer by additive friction stir deposition using a third metal, wherein the third metal is a third aluminium alloy.

Abstract: A robot cell, having a cell floor defining an array of nodes corresponding with a predetermined two-dimensional coordinate system and defining a volume for receiving a workpiece W therein, is described. The robot cell comprises: a set of robots, including a first robot, having respective bases, end effectors and working envelopes and defining respective three-dimensional coordinate systems, located according to the array of nodes; a set of detectors, including a first detector, configured to detect respective locations and/or bearings of the set of robots; a set of sensors, including a first sensor, configured to sense respective poses of the set of robots; and a controller, communicatively coupled to the set of robots and to the set of detectors, configured to control movement of the set of robots using the detected respective locations and/or bearings of the set of robots.

Abstract: A method of manufacturing an article is described. At S102, the method comprises obtaining a first layer having a first face and a reverse second face, wherein the first layer comprises and/or is a first metal and wherein the first metal is a heat treatable first aluminium alloy. At S104, the method comprises providing a second layer on the first face of the first layer by cold spraying particles comprising a second metal thereupon, wherein the second metal is a second aluminium alloy. At S106, the method comprises depositing a third layer on the second layer by additive friction stir deposition using a third metal, wherein the third metal is a third aluminium alloy.

Abstract: A hybrid bonded-fastened (HBF) joint 100 is described. The hybrid bonded-fastened (HBF) joint comprises: a first component 110 having a first joint surface 111, wherein the first component 110 is a composite component; a second component 120 having a second joint surface 121, wherein the second component 121 is a metallic component; a set of projections 130, including a first projection 130A, mutually interlocking the first component 110 and the second component 120 via the first joint surface 111 and the second joint surface 121; and an adhesive 140 mutually adhesively bonding the first component 110 and the second component 120 via the first joint surface 111 and the second joint surface 121; wherein the adhesive 140 comprises and/or is a disbondable adhesive.

Abstract: The present invention relates to a field gun with wheel carriage, specifically to a wheel carriage with regenerative braking system as part of the recoil system A field gun, comprising: i) an elevating mass comprising: an ordnance for firing a projectile, the ordnance comprising a barrel defining a barrel axis and having a muzzle towards the front end of the howitzer and a breech assembly at the rear end of the barrel; and a cradle for holding the ordnance at a traverse and an elevation; and at least one co-operative engagement means, for linking said cradle to a wheeled carriage, ii) said wheeled carriage comprising at least one wheel: a rechargeable electric storage device; and a regenerative braking system comprising: a brake control configured for applying a braking force to said at least one wheel in response to movement of the wheeled carriage by a recoil force from the firing of the projectile from the gun barrel.

Abstract: A lightweight end cap for an ammunition cartridge, said end cap having a central axis along its axial length, with a first radius; wherein said end cap further comprises a swept volume rebate; having a second radius less than the first radius, wherein the second radius is at least 10% smaller than the first radius, and wherein the swept volume rebate extends along at least 10% of the axial length of said end cap, wherein the end cap further comprises an extractor groove suitable for receiving an ejection mechanism.

Abstract: A folded optical arrangement for use in a look-through display to transmit an image from an image plane to a user's eye, the arrangement providing a folded optical transmission path and comprising: an optical system having a first optical element comprising a first plurality of optically powered surfaces; and a second optical element comprising at least one optically powered surface, the optical system configured to receive light forming the image from an image source, and to focus the light to have an apparent optical focus between a predetermined distance and optical infinity and output the light; wherein the first plurality of optically powered surfaces and the at least one optically powered surface of the second optical element are arranged to define a plurality of interfaces along the folded optical path and wherein a refractive index change at each interface is predetermined to control the direction of light passing through the or each interface; and wherein one surface of the first optical element and

Abstract: A method for generating a measure for insertion loss of an antenna structure comprising a radome defining a cavity to receive an antenna array. The method may comprise partitioning a user define geometry, which includes shape and dimensions, of the radome into a mesh comprising a first set of discrete geometric and topological cells, determining, for each cell, angles of incidence of electromagnetic radiation emitted from respective antenna elements of the antenna array for each scan angle of interest, the angles of incidence of electromagnetic radiation for a cell defining a distribution for that cell, on the basis of the distribution for a cell, assigning each cell to a zone of a set of zones for the radome, generating a measure of the insertion loss for each zone, and using the corresponding measure of insertion loss for a zone, selecting a structural configuration for the zone.