Abstract: There is disclosed a frame for supporting a head worn display on a user, comprising a first portion arranged for a first user eye and comprising a first casing for optical components, the first casing comprising a first casing reflector mount for a first casing reflector; a first back mount for a back reflector the back mount defining a plane for the back reflector and a corresponding back reflector axis perpendicular to the plane; a first front mount for a combiner, the front mount defining a plane for the combiner and a corresponding combiner axis perpendicular to the plane; wherein the back mount is arranged to position a back reflector proximate to the user's first brow and such that the casing is arranged to extend from an inner end proximate to the brow to an outer end proximate to the user's temple, a second portion arranged for the other eye and comprising: a second casing for second optical components, the second casing comprising a second casing reflector mount for a second casing reflector; a secon

Abstract: According to the present invention there is provided a vibration control system comprising: a resonator comprising: a base attachable to an external body; a control element; and one or more connection elements each having a resilient portion, wherein the control element is resiliently connected to the base by the one or more connection elements such that relative movement between the control element and the base is facilitated by the one or more connection elements; and a driving mechanism, wherein the resonator comprises at least a part of the driving mechanism.

Abstract: A range extension device, capable in use of being reversibly engaged to a body of an artillery carrier shell, said shell comprising a payload cavity, said range extension device comprising an internal cavity comprising at least one energetic material charge, and an igniter, wherein the range extension device comprises a first region with an aperture which faces rearwardly, and second region with a closed end, wherein the closed end in use extends into the payload cavity of the carrier shell.

Abstract: A computer-implemented method of simulating vessel behaviour comprises receiving (202) input data comprising at least an identifier for a vessel and position information of the vessel during real-world use of the vessel, and providing (204) the input data to a simulator application that simulates behaviour of vessels. The method further includes executing (206) the simulator application to perform a simulation based on the input data, and outputting (208) data generated by the simulation.

Abstract: There is disclosed a method of assembling a head worn display, the method comprising: providing a sub-assembly at a mount, the sub-assembly comprising an optical train having an output from which to present virtual imagery to a user at a first eye, and an input for receiving light bearing virtual imagery from an image source; initially Positioning an image source at the input to the optical train; generating test virtual imagery at the image source; monitoring at the output at least one quality of the test virtual imagery output from the optical train; adjusting the position and orientation of the image source, and further monitoring the at least one quality of the test virtual imagery; repeating the adjustment and further monitoring until the at least one quality is at or above a threshold of acceptability, thereby identifying an operational position for the image source relative to the input to the optical train; and fixing the image source at the sub-assembly in the operation position.

Abstract: According to the present disclosure there is provided an acoustic control system for controlling acoustic noise in a duct arranged to receive fluid flow therein, comprising: a resonator arrangement for connection to the duct, the resonator arrangement comprising a plurality of resonators, wherein the resonator arrangement is configured based on a flow rate of the fluid flow in the duct.

Abstract: The present disclosure relates to a robot for performing non-destructive evaluation of a weld of a component.

Abstract: According to the present disclosure there is provided a vibration control system for controlling vibration of a structure, the vibration control system comprising: a resonator arrangement for controlling vibration of the structure by absorbing energy therefrom, the resonator arrangement being tunable to tune one or more resonance frequencies of the resonator arrangement; and a controller configured to: determine a frequency response of vibration of the structure; tune the one or more resonance frequencies of the resonator arrangement based on the determined frequency response of vibration of the structure; and control vibration of the structure by operating the tuned resonator arrangement.

Abstract: A drone (10) operable for flight. The drone has a fuselage (100) having a length (L) extending along an x-axis, the fuselage (100) comprising a port side fuselage section (102) spaced apart from a starboard side fuselage section (104) to define a slot (106) therebetween which extends along the length (L) of the fuselage (100). There is also provided a cannon (200) having a barrel (202). The cannon (200) is pivotably mounted in the slot (106) to the port side fuselage section (102), and/or pivotably mounted to the starboard side fuselage section (104), by a trunnion mounting assembly (110) having a trunnion axis (112) which extends at right angles to the x-axis. The barrel (202) is operable to pivot about the trunnion axis (112) to move over, and/or be positioned at, a range of angles relative to the x-axis direction.

Abstract: The present disclosure relates to a computer-implemented method of managing a plan of a sequence of events associated with a part in a facility.

Abstract: A data transmission system 200 is provided for use with a projectile 120. The projectile 120 is arranged for firing from an artillery piece 110. The data transmission system 200 comprises at least one sensor 220 arranged to sense at least one parameter. The at least one sensor 220 is configured to produce an analogue voltage output. The data transmission system 200 further comprises a first voltage-controlled oscillator 230, configured to produce an output having a frequency proportional to the voltage output of the at least one sensor 220. The data transmission system 200 further comprises an encoder 240. The encoder 240 is configured to generate encoded data using the output of the first voltage-controlled oscillator 230 by switching between two signal streams having different properties. The different properties are used to encode for different logical states. The data transmission system 200 further comprises a transmitter 250 configured to transmit the encoded data.

Abstract: A system (200) for displaying virtual images (43a, 43b), in an ambient scene, the system comprising: a display device (100) for presenting virtual images to the user in a user field of view; a first imaging device (22) generating first ambient image data (CD1) in a first portion (ABC) of the ambient scene, a second imaging device (24) generating second ambient image data (CD2) in a second portion (DEF) of the ambient scene, the first portion and second portion overlapping to define a common portion (GDB) of the ambient scene imaged by both the first and second imaging device; a processor unit (50) for: receiving virtual image data (VID) specifying a virtual image (43a, 43b) and a target real world object (T, R, S) or zone (302, 304) to which the virtual image (43a, 43b) should appear anchored; receiving the first and second ambient image data; from the first ambient image data, identifying the presence of the target real world object or zone, and determining a position of the target real world object or zone

Abstract: There is disclosed a user-mountable display system (200) comprising: a display device (100) for displaying imagery at a first fixed depth and a second fixed depth, the display device having a display field of view (FOV); a range device (10, 22, 24) for generating ambient image data (AID, CD1, CD2) over a range field of view; a processing unit (50) configured to: receive ambient image data; generate range data using the ambient image data; use the range data to determine a first zone (302) of the ambient scene for display of imagery at the first depth, and a second zone (304) of the ambient scene for display of imagery at the second depth; receive virtual image data (VID) representative of at least two images (43a, 43b) for display as virtual images; and process the virtual image data (VID) to: determine from the virtual image data (VID), a virtual image associated with the first zone (302) or associated with the first depth (6), and distribute such first depth imagery (43a) to the display device (100) for dis

Abstract: A computer implemented method of detecting a fault in an onboard computing system (200) comprising: recording a log of messages transmitted on a databus (101) of the onboard computing system for a rolling timespan (116) according to a rule (124) stored in a memory system of the onboard computing system; detecting a target message-transmission event associated with the rule; 2024/236267 retrieving, in response to detecting the target event, the log of messages; determining whether the log complies with a valid digital chain associated with the rule, the valid digital chain comprising a group of messages associated with the target message-transmission event; and in response to the log failing to comply with the valid digital chain of the rule; storing or maintaining the log in a log database.

Abstract: In some examples, a method for manufacturing a switching structure for a radial slot line antenna, RLSA, array using a single semiconductor wafer element, comprises forming a set of active switching devices within the wafer element, a position of each active switching device on the wafer element selected according to a predefined configuration representing a slot element layout for the RLSA array, and forming driving circuitry within the wafer element, the driving circuitry for individually addressing respective ones of the set of active switching devices, whereby to enable selected bias signals to be applied to the set of active switching devices.

Abstract: In some examples, a dual polarized dipole structure comprises a first dipole arm comprising a first dipole and a second dipole arm comprising a second dipole, the first and second dipoles being substantially planar and being joined to each other at a feed point of the dipole structure disposed at the centre of the first and second arms, whereby to form a dual polarized dipole radiating element for an antenna structure, wherein the first dipole arm and the second dipole arm are so arranged, with respect to a square unit cell, such that the first dipole and the second dipole are orthogonal to one another and so arranged as to lie on respective diagonals of the square unit cell.

Abstract: An optical communication system is provided. The system comprises an optical transmitter and receiver mutually optically coupled via an optical fibre cable assembly comprising an optical fibre cable and optical circuits, including a first optical circuit comprising a first optical isolator. The optical transmitter is configured to transmit an optical signal to the optical receiver via the assembly which is received by the optical receiver. The optical circuits are disposed to section the cable into a series of sections including first and second sections. The system also has distributed acoustic sensing (DAS) circuits including a first DAS circuit, which comprises a first DAS optical transmitter and receiver and a first DAS multiplexer/de-multiplexer The first DAS optical transmitter is configured to transmit a first DAS optical signal to the first DAS optical receiver via the first section or the second section and via the first DAS multiplexer/de-multiplexer.

Abstract: A head tracking system HTS configured to determine a head position and/or a head orientation of a user includes one or more optical sensors producing optical measurements; and one or more inertial sensors producing inertial measurements; a processor configured, when the optical sensors fail to provide optical measurements to determine the head location and the head orientation of a user, to operate in a coasting mode using the inertial measurements from the one or more inertial sensors to determine the head location and the head orientation of a user.

Abstract: A jet aircraft with an airflow modifying device in an engine duct thereof comprising: a flow inlet; a flow outlet; and a flow passage extending from the flow inlet to the flow outlet; wherein the device is arranged to receive an incident air flow; and wherein the device is configured to at least partially modulate the air flow in the flow passage to improve flow ordering of the incident airflow, the airflow modifying device further comprising: at least one pitot sensor integral with the device located at the flow inlet; and a pressure line comprising a first end and a second end, the first end connected to the pitot sensor and the second end configured to be connected to a transducer; wherein the pressure line is completely enclosed within the device.

Abstract: A flow body unit (600) for a fluid flow rig (10) for simulating fluid flow patterns; the flow body unit (600) comprising: a flow body support frame (700); a core member (800) extending from the flow body support frame (700) along a flow body unit longitudinal axis (630); the core member (800) having a leading edge end (822) and a trailing edge end (824), the core member (800) mounted to the flow body support frame (700) at its trailing edge end (824) such that it extends away from the flow body support frame (700) to terminate at a free end (834) defined by the leading edge end (822).