Abstract: A cartridge casing comprising a casing tube formed substantially of metal with a closed end and an open end. The casing tube bounds at least part of a head cap entered into the open end of the tube. The head cap is fixed relative to the tube. An end wall defines the closed end opposite the head cap end of the cartridge. The end wall comprises a weakened region.

Abstract: Apparatus for communications management in a communications system of a moving platform comprising a plurality of systems and/or functions and at least one platform application, the communications system comprising at least one transmitter for transmitting data received from the at least one platform application and being configured to effect wireless data communication thereof by means of one of a plurality of supported communications links, wherein the apparatus comprises a data management module configured to: receive a control message indicative that no suitable communications links are available for transmission of platform application data; obtain a classification in respect of platform application data to be transmitted to at least one recipient node; determine, from a stored ruleset, an action to be taken in respect of the platform application data according to the respective classification thereof, wherein the action comprises one of storing or discarding the platform application data; and generat

Abstract: An apparatus is disclosed for producing an optical display comprising an optical waveguide including a first diffractive part arranged to receive display light and to diffract the display light into an angle for guided propagation along the optical waveguide. A second diffractive part of the waveguide is optically coupled to the first diffractive part by the optical waveguide and is arranged to receive and to diffract light from the first diffractive part to an angle for output from the optical waveguide. Those external surfaces of the waveguide against which guided light reflects internally are coated with a meta-material having a refractive index of value less than 1.0 (one).

Abstract: A mixed reality system for creating a terminal control station enabling communication with and/or control of remote functions and applications, the system comprising a headset (100) for placing over a user's eyes, in use, said headset including a screen (102), the system further comprising a processor (104) configured to receive data from multiple sources and display said data on said screen within a three-dimensional virtual environment, and an input for receiving control information data from an external data source within the real world environment, said processor (104) being further configured to receive image data representative of said external data source and blend said image data into said three-dimensional virtual environment to create a mixed reality environment, including a representation of said external data source and said control information data, to be displayed on said screen (102), the system being configured to allow a user, in use, to manipulate data displayed within said mixed reality env

Abstract: A structure to be monitored for damage and a method of monitoring the structure for damage are provided. The structure has a coating thereon, the coating defining a surface having characteristics which vary in a predetermined manner with damage to the structure. The surface has a series of conductive tracks applied thereto and in intimate contact therewith such that the said predetermined variation of the surface characteristics will vary the resistance of the series of conductive tracks in a predetermined manner in order to determine both location and extent of damage.

Abstract: A non-linear transmission line device includes a magnetic element having at least one end profiled to reduce demagnetization when the element is biased. The profile may be tapered, stepped, or smoothly curved. Also disclosed is a non-linear transmission device made up of a solid magnetic element, typically of flat rectangular form.

Abstract: Apparatus for communications management in respect of a moving platform having a dynamic planner (40) configured to generate a communications plan utilising one or more of a plurality of communications planning strategies, at least one platform application (14, 16, 18, 20, FIG.

Abstract: An optical system (100) comprising: a transmitter module (102) configured to transmit a sequence of optical pulses (300), each optical pulse in the sequence (300) having a different magnitude to each other optical pulse in the sequence (300); a receiver module (104) comprising one or more optical signal detectors, the receiver module (104) configured to receive the sequence of optical pulses (300) transmitted by the transmitter module (102); and one or more processors (110) configured to process the sequence of optical pulses received by the receiver module (104) to select an optical pulse from the received sequence of optical pulses (400) based on one or more predetermined criteria. The one or more predetermined criteria include a criterion that the selected optical pulse does not saturate the one or more optical signal detectors.

Abstract: A method and apparatus are provided for controlling a digital display device to generate an image for display, wherein the display device is arranged to generate the image as an array of pixels each of a defined brightness achieved by emitting a respective combination of light pulses of durations defined according to a predetermined pulse width modulation (PWM) scheme. Whereas, under conventional PWM schemes, each light pulse would be emitted by the same pixel of a display device, in the present invention rate data from an associated tracker system and data defining predetermined characteristics of the display and operation thereof are used to calculate a pixel displacement in respect of each defined pulse of the PWM scheme. The pixel displacement is used to modify control data defining those pixels to be activated to emit the defined pulse such that a different pixel to that intended emits the pulse during relative movement of the direction of gaze of a user's eye and the display apparatus.

Abstract: A method and apparatus are provided for controlling a display device to generate an image for viewing by a user on a display, the image being formed by one or more light having predetermined relative timings. Received image data define one or more light components of a feature to be displayed as an element in the image. Rate data are received, e.g. from an associated tracker system, indicative of a rate of change in orientation of the display relative to a direction of gaze of an eye of the user. The received rate data are used to determine a position on the display for displaying each of the one or more light components of the feature including determining any respective adjustment required to a determined position for the light component according to the received rate data and the predetermined relative timings. The determined position of each of the one or more light components is output to the display device for display of the light component at the respective determined position.

Abstract: A method and apparatus are provided for generating image data for output to a display device such as an HUD or HMD defining pixels of an image for display. The image data for each pixel defines a predetermined background colour or a non-background colour. In an example implementation, the image generator comprises at least one image rendering module and a memory accessible by the at least one rendering module providing at least one frame buffer in which image data may be assembled. The at least one rendering module is arranged to process or to generate image data using a tile representation of an image for display, each tile comprising image data defining each of a predetermined number of pixels of the image.

Abstract: An apparatus and method are provided for implementing one or more security services to messages and data being communicated between a first network and a second network. In particular, a network bridge device is provided for applying communications security services to data passing by means of the device from a first network to a second network, the device having a first network interface for linking to the first network, a second network interface for linking to the second network, and a unidirectional link between the first and second network interfaces within the device incorporating a first hardware logic module, configured to apply one or more predetermined data security functions to message data received via the first network interface, and a second hardware logic module, arranged to apply a predetermined scheme for authentication of the source of messages passing through the device.

Abstract: A method of configuring a telecommunications network comprising the steps of: providing a first set of time dependent network data, a network related parameter varying with time; identifying abnormalities embedded within said first set of data; providing a first set of external event data; associating respective abnormalities with corresponding event data; generating a model to represent an impact of the, or each, class of event, represented by the event data; using the, or each, model in combination with extrapolated data to predict future variation in the network related parameter; repeating this simulation for alternative input conditions; selecting a solution from the output of one the simulations; and implementing a modification to the network corresponding to the/or each respective input condition.

Abstract: An apparatus for effecting a control action in respect of a function within a virtual or mixed reality system, the control action corresponding to a predefined bodily movement of an authorized user of said function, wherein an authorized user is defined by a predetermined criterion in respect of a selected body part and/or a passive device carried thereon. The apparatus comprises a detection module for detecting a predefined bodily movement; a multi-spectral imaging system for capturing spectral reflectance and/or emission data at a plurality of wavelengths in respect of said selected body part and/or the passive device carried thereon; and an analysis module for comparing at least a portion of the spectral data with data corresponding to an authorized user of said function to determine if said criterion is met, and outputting a signal to effect said control action only if said criterion is met.

Abstract: A cartridge casing comprises a casing tube having a first end and a head cap. The first end of the casing tube abuts and is joined with the head cap such that an orifice in the first end of the casing tube is aligned with a passage in the head cap to define a flash passage. The head cap and casing tube are held together by a deformable member.

Abstract: Disclosed is a method and apparatus for detecting and ranging cloud features. The method comprises: obtaining image data (e.g. using a camera (200); classifying, as a cloud feature, an image segment (502-508) of the image data; determining a plurality of moments of the image segment (502-508); using the determined plurality of moments, determining a geometric representation of that image segment (502-508); and, using the geometric representation, determining a distance between the cloud feature represented by that image segment (502-508) and an entity that obtained the image data.

Abstract: There is disclosed an electric battery assembly comprising: a plurality of electric batteries arranged in an array, an interconnection for connecting batteries in the array to provide a common power output; a plurality of shock absorbent housings, wherein each electric battery is provided within a shock-absorbent housing. The shock absorbent housing may have the form of a blister, which may be flexible and which may be filled with a shock-mitigating material.

Abstract: A method of establishing a network by sharing a secret between a first entity (A) and a second entity (B), comprising the steps of: the first entity (A) broadcasting (100) an ANNOUNCE message announcing its identity and details of other entities it is aware of, wherein each of the other entities of which it is aware is associated with a particular nonce, and the message is encrypted using a broadcast encryption scheme common to the first and second entities (A,B), and; the second entity (B), upon receiving and decrypting the ANNOUNCE message, transmitting (110) to the first entity (A) a SHARE message, wherein the SHARE message comprises a signcryption of the secret, authenticated using signcryption data associated with the particular nonce associated with the second entity (B).

Abstract: Disclosed is an imaging method for imaging terrain using a sensor on an unmanned aircraft. The method comprises: acquiring a range of motion of the sensor; acquiring positional information of the terrain; acquiring parameter values relating to aircraft maneuverability; using the acquired information, determining a procedure; performing, by the aircraft, the procedure and simultaneously capturing, by the sensor, a set of images of only parts of the terrain. The procedure comprises the aircraft moving with respect to the area of terrain and the sensor moving with respect to the aircraft such that each point in the area of terrain is coincident with a footprint of the sensor on the ground for at least some time. Also, every point in the area of terrain is present within at least one of the captured images.

Abstract: A mobile bridge module includes a reinforcement applied in a non-destructive manner. This might alternatively and/or additionally be defined as a non-destructively reinforced mobile bridge module.