Abstract: Apparatus for air cooling includes an acoustic transducer secured to a body. The body has a first wall including a first opening and the acoustic transducer forms a second wall facing the first wall. A chamber within the body is defined between the acoustic transducer and the first wall and is in fluid communication with the chamber. The first wall is interposed between a third wall and the chamber. The third wall includes a second opening facing the first opening. An inflow path is disposed between the first wall and the third wall. The inflow path includes outer ends communicating with the outside air and inner ends connected to the first and second openings. The acoustic transducer includes a diaphragm that vibrates in response to a drive system causing outside air incoming through the inflow path into the chamber to flow from the chamber through the first and second openings.

Abstract: Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of using a heat source such as a laser to melt the surface of a work piece and form a weld pool; adding wire or powdered metallic material to the weld pool and moving the heat source relative to the work piece so as to progressively form a new layer of metallic material on the work piece; applying forced cooling to the formed layer; stress relieving the cooled layer by applying a peening step, for example with a pulsed laser, and repeating the above steps as required to form the component layer by layer.

Abstract: A fabric antenna for telecommunications is disclosed. The fabric antenna comprises a host yarn, which is substantially electrically non-conducting, and an antenna yarn, which is substantially electrically conducting. The host yarn and antenna yarn are knitted together to form a host fabric comprising an antenna grid. The antenna grid comprises a plurality of intersecting antenna tracks formed of antenna yarn. The tracks are separated by regions of the host fabric and are electrically coupled together at the regions where the tracks intersect.

Abstract: A system and method for preventing email social engineering attacks, comprising a whaling/CEO fraud/imposter protection module; a vendor/supplier fraud protection module; a personal email fraud/display name abuse module; an email traffic modeling module; an auto-configure/learn mode module; an in-line protection module; an integrated malware analysis module; an email fingerprinting module; and a trust score module.

Abstract: An apparatus having an analog-to-digital converter with an increased effective resolution is disclosed. The apparatus includes a signal processing functional block and an analog-to-digital conversion block. The signal processing functional block includes a controller for providing a set of digital control signals according to a set of digital input signals received by the controller, a digital-to-analog converter for converting the digital control signals to a set of corresponding analog control signals, and a physical hardware unit for performing a specific function according to the analog control signals. The analog-to-digital conversion block includes an adder for adding a dither signal to an analog feedback signal originated from the physical hardware unit, an ADC for converting sums of dither signals and analog feedback signals to a set of oversampled digital control signals to be fed into the controller.

Abstract: The present disclosure includes a hardened tablet for use within an aircraft cabin, the hardened tablet including a processor, a touch screen, a memory, a tablet and a protective layer applied to the touch screen of the tablet, the protective layer comprising a bonding material and a laminate. The protective layer of the hardened tablet is selected from the group consisting of a polycarbonate and a chemically strengthened glass. The thickness of the polycarbonate protective layer is between about 0.5 mm and about 1.6 mm. The bonding material is selected from the group consisting of an adhesive tape and an optically clear adhesive. In one embodiment, the protective layer includes a polycarbonate of a thickness of about 0.02? to about 0.04? and the bonding material is an optically clear adhesive.

Abstract: A diffraction grating 1 includes a surface 12 having grooves 14 therein, each groove 14 providing a diffracting surface for light incident upon the diffracting surface. The grooves 14 are separated from each other by lands 20 upon the surface 12. The lands 20 are of predetermined varying width, whereby the diffractive efficiency of the grating 1 varies across the extent of the grating 1.

Abstract: A method for improving target location accuracy in direction finding systems is disclosed. A target search region is identified based on a set of received signals, and the target search region is projected onto the earth's surface. An initial search grid, which is smaller than the target search region, is placed within the target search region. Next, the initial search grid is expanded to a full search grid by using an optimum number of virtual grid points in order to cover the entire target search region. The correlation coefficients at the virtual grid points between the estimated phases of emitted signals and the estimated phases of the received signals are then calculated. A target is designated as being at a location associated with the highest correlation coefficient. At this point, a new travel path can be initiated to engage or avoid the target.

Abstract: There is disclosed a flash device for selective activation where upon activation the device may emit at least 100,000 lumens, the flash device comprising, an operator interface, a power unit comprising an energy store, at least one light emission unit connected to the power unit and comprising an array of light emitting elements, a power converter unit for driving the array, a control unit operably connected to the at least one light emission unit, the control unit comprising a processor and being operably connected to the operator interface.

Abstract: The present invention is an electrical slip ring device comprised of a stator, a rotor and an independent rotationally free brush ring. The brush ring may include a multitude of slipping fingers, chevrons or other current carrying structures that extend between the rotor and the stator. These current carrying structures have a directional bias or “lay”. The rotational freedom of the brush ring enables bi-directional movement of the rotor with reduced torque and wear at the sliding interfaces because sliding always occurs in the direction of the lay.

Abstract: According to the present invention, there is provided an electroacoustic transducer, comprising: a first electrode; a second electrode; a piezoelectric material at least partially sandwiched between the first electrode and the second electrode; and a flexible electrical connector in electrical connection with the first or second electrode at discrete points around a periphery of that electrode, the discrete points being distributed about a substantial portion of that periphery.

Abstract: The present invention relates to a hybrid powertrain for a vehicle. The hybrid powertrain comprising: an internal combustion engine; a torque converter; a first and a second electric machine electrically coupled to each other. The hybrid powertrain further comprises a planetary gear set, comprising a first, a second and a third member. The internal combustion engine is mechanically engaged to the second member of the planetary gear set via the torque converter. The first electric machine is arranged mechanically engaged to the first member of the planetary gear set. The second electric machine is arranged mechanically engagable to the second and third member of the planetary gear set so as to establish a plurality of operating modes of the hybrid powertrain.

Abstract: The invention relates to a modular charge container device formed of one or more combustible modular cartridges, wherein said combustible modular cartridge comprises two ends, a first end comprising a base portion and a second end comprising a top portion, wherein the combustible modular cartridge is formed using a substantially rigid and combustible material, said combustible modular cartridge comprises at least one wall to define a cavity, wherein the cavity further comprises at least one combustible canister, wherein said combustible canister comprises an energetic material.

Abstract: A control system (200) using fixed point computation avoids overflow conditions by limiting the internal quantities ensuring that contributing calculations from various parts of the control loop never add up to an overflow. Various parts of a control loop e.g. proportional terms can be prioritised over other parts, e.g. integral and differential terms and ensuring that the overall total resulting when the separate terms are summed together never exceeds the maximum or minimum imposed limits. Variable limit calculator circuits (211,219) revise the limits according to the output of the higher priority control path(s). The revised limits cascade down through each contributor, eventually allowing the lowest priority control path the smallest authority. The control system may be applied to control of a drive motor (111) for an aircraft inceptor (103).

Abstract: In one aspect of the present invention is provided an attachment device (100) for attachment of a trailing arm (54a) to a track support beam (22) intended to be connected, via said trailing arm (54a), to a center beam (30, 32) or other structural element situated between two track assemblies (21) of a tracked vehicle (10). The attachment device (100) is secured to the track support beam (22) and configured to attach the trailing arm (54a) to the track support beam (22) via an axis (X2) running above and substantially centrally along an upper side of the track support beam (22), in the longitudinal direction of the track support beam. In this way, a robust, structurally strong, suspension-admitting attachment device that is easy to manufacture and assemble is achieved.

Abstract: The present invention provides a projection display, for displaying an image to a viewer. An image-providing light source device is arranged to inject an input pupil of multi-spectral image bearing light into a waveguide assembly. The waveguide assembly comprises first and second diffraction regions arranged respectively for expanding the input pupil in first and second generally orthogonal dimensions and outputting an exit pupil expanded in the first and second dimensions from the waveguide assembly. The diffractive regions of the waveguide assembly are matched to cause zero or substantially zero net chromatic aberration. A combiner is arranged to direct the exit pupil towards the viewer for viewing an image and to transmit light from a real world scene through the combiner so that the image overlays the light from the real world scene.

Abstract: A method and apparatus for producing a design for a system (2) that comprises a plurality of subsystems (4, 6) is provided. Criteria to be satisfied by the system (2) are identified. For each subsystem (4, 6), further criteria that are to be satisfied by that subsystem (4, 6) are determined and a parametric model (8, 16) is then determined. These comprise inputs (10, 18) and outputs (14, 22) that are dependent on the inputs (10, 18). A systems engineering model (100) comprising, as inputs, parametric model inputs (10, 18) is then determined. System model outputs (28) are dependent on the system model inputs. Groups consisting of some of the system model inputs are formed and an optimization process is performed, for each group, to determine inputs that optimize the system model outputs (28). A set of inputs that optimize the system model outputs (28) provides a design for the system.

Abstract: A tactical network comprises a plurality of assets, at least some of the assets grouped into sub-groups. The assets within each subgroup communicate with each other using a communication protocol. The sub-groups include a first subgroup in which the assets all communicate with each using a first communication protocol and a second sub-group in which the assets all communicate with each other using a second communication protocol which is incompatible with the first communication protocol. Each subgroup is associated with a federated server. The federated server is configured to receive data from the assets, to assess the data to identify significant changes, to convert the significant changes in the data into a common format, compatible with all federated servers in the tactical network, and to transmit, in the common format, to the federated server of another of the subgroups, the significant changes.

Abstract: An armored cab comprises a top wall, two side walls, a front wall, a back wall, and a bottom wall, the cab having a longitudinal axis. The bottom wall comprises a generally centrally disposed downwardly facing smooth concave wall portion extending substantially an entire length of the cab and generally parallel to the longitudinal axis of the cab and forming a power train tunnel of the cab, and a pair of opposite laterally disposed wall portions extending substantially the entire length of the cab and generally parallel to the longitudinal axis of the cab, each of the opposite laterally disposed wall portions extending downwardly and laterally inwardly and terminating in a lowermost portion of the bottom wall on either lateral side of the concave wall portion. The concave wall portion and the opposite laterally disposed wall portions are configured so as to present a substantially reduced surface area of the lowermost portions of the bottom wall in a downwardly facing direction.

Abstract: Additive manufacturing apparatus for fabricating a three-dimensional object, the apparatus comprising: means for directing energy onto a growth surface of a workpiece to form thereon a liquid melt-pool; means for feeding additional material into the melt-pool so as to cause the additional material to become incorporated into the liquid of the melt-pool; and means for cryogenically cooling the liquid melt-pool, thereby to achieve a cooling rate of the liquid melt pool of at least 100° C. per second and to cause the liquid melt-pool to solidify.