Abstract: The present disclosure relates to a sonar device (1) for detection of underwater objects. The sonar device comprises a body element (2) having a cavity. A piezo electric element (3) is comprised within the cavity. A resin filling (6) of the cavity protects the piezo electric element (3) from water at underwater operation. The sonar device further comprises a holder (4) adapted to hold the piezo electric element (3). The holder (4) is arranged to centre and hold the piezo electric element (3) within said body element (2). The holder (4) comprises in its structure a plurality of damping structures (5). A method of manufacturing holder and a sonar device is also disclosed.

Abstract: The invention relates to a method of delaying a mechanism in a firearm and a delay unit for a projectile comprising i) a first and a second pressure chamber (3a, 3b) arranged to receive combustion gases in a firearm via at least one inlet (1a, 1b) arranged to each of said first and second pressure chambers (3a, 3b) following firing of a projectile ii) at least one outlet for transferring the combustion gases (4a, 4b), arranged to each of said first and second pressure chambers (3a, 3b), to a piston chamber in which a displaceable piston (6) is arranged dividing the piston chamber into a compartment (5b) having a volume V1 upstream the piston (6) and a compartment (5a) having a volume V2 downstream the piston (6), wherein said at least one outlet (4a, 4b) from the first and second pressure chambers (3a, 3b) are arranged to transfer said combustion gases to said compartments (5a, b) of said piston chamber to provide an overall pressure difference between compartments (5a) and (5b) pressing the piston (6) at an

Abstract: The present invention relates to a director mount arrangement for automatic alignment of a subsystem relative to a platform, wherein said director mount arrangement is arranged to pivotably support the subsystem. The director mount arrangement comprises a pivot frame arrangement and a control system. The control system comprises a control unit arranged to generate control signals so as to control the orientation of and stabilize the subsystem. The control signals are generated based on angular rate of subsystem and orientation operating commands provided from an operator. The control unit further generates estimated control signals based on platform orientation information and determine a difference between the control signals and the estimated control signals, wherein the difference is indicative of mechanical misalignments between the subsystem and the platform.

Abstract: The present disclosure relates to a method for determining an action for collision avoidance in a craft.

Abstract: The invention concerns a system (100) and a method for estimating the geographic position of a target (1). The method comprises the following steps: detecting a target (1); determining the characteristics of the target (1), which characteristics at least comprise a geographic position (3) and a category of the target; tracking the detected target (1) until at least one certain predetermined criteria is not fulfilled, wherein said criteria is associated to the level of certainty for determining the geographic position (3) of the target (1).

Abstract: A method for controlling a control surface multirod actuator arrangement and the arrangement including: a first and a second multirod actuator configured to move or clamp around a first set of piston rods; a third multirod actuator configured to move or clamp around a second set of piston rods; a control unit configured to control motion of the first set of piston rods in a first motion mode and to control motion of the second set of piston rods in a second motion mode. Steps are moving at least one piston rod of first set of piston rods and/or clamping in parked position at least one piston rod of the second set of piston rods.

Abstract: The present disclosure relates to a method for determining an impact of optical component degradation on the functionality of an electro-optical sensor system, said method (100) comprising a step of obtaining (110) test data relating to the state of the optical component; a step of providing (130) a set of correlation values based on test data and correlation data, said correlation data correlating test data to an optical component degradation state, wherein the optical component degradation state relates to a functionality impact of the electro-optical sensor system; and a step of obtaining (140) an electro-optical sensor system functionality estimate based on the provided set of correlation values.

Abstract: The disclosure relates to an antenna system [1] comprising a mast [7], in turn comprising a base section [2b] and an extendable section [a], and an antenna [6]. The antenna [6] is arranged to be rotatable and the extendable section [2a] comprises a plurality of telescopic sections [8] whereby the extendable section [2a] may adopt a retracted configuration and a deployed configuration. The mast [7] is foldable in relation to a platform [5] in a vertical plane [PLxy] essentially parallel to the longitudinal direction of the extendable section [LD-es] and to the longitudinal direction of the base section [LD-bs] by means of a first pivot joint [9]. According to the disclosure the antenna system [1] may be arranged to the platform [5], wherein the platform [5] may be in form of a vehicle [5-v], whereby an antenna arrangement [101] is formed.

Abstract: The invention relates to a rudder control assembly (2) for a missile (1), the rudder control assembly (2) comprising: a first actuator (20) connectable to a rudder (16), which first actuator (20) is configured to steer the rudder (16) when connected to the rudder (16); a coupling element (22) for connecting the first actuator (20) to the rudder (16); and a second actuator (24) for locking the rudder (16) in a fixed position, wherein the second actuator (24) comprises a locking element (26), which is configured to lock and unlock the rudder (16) and which locking element (26) also is configured to connect the first actuator (20) with the rudder (16) by means of the coupling element (22) when unlocking the rudder (16). The invention also relates to a missile (1), comprising a rudder control assembly (2). The invention also relates to a method, performed by a control device (100), for testing a first actuator (20) of a rudder control assembly (2) for a missile (1).

Abstract: A fluid actuator arrangement comprises a piston rod member, at least two cylinders each said cylinder having a piston body, and a clamping mechanism associated to each cylinder. Each clamping mechanism is arranged to engage and disengage the piston body of the cylinder to the piston rod member. The fluid actuator arrangement comprises further a control element arranged to control a back and forward movement of the respective piston body so that forward movement is slower than the backward movement and to control the movement of the respective piston bodies in relation to each other such that at least one piston body is always moving forward and such that an overlap exists wherein at least two of the piston bodies are moving forward simultaneously during a cycle.

Abstract: The invention relates to a sensor fastener arrangement (10a-f) for holding a sensor device (3). The sensor fastener arrangement (10a-f) comprises a plurality of fastener elements (20a, 20b). The fastener elements (20a, 20b) are configured to arrange the sensor device (3) to a platform (1). Respective fastener element (20a, 20b) is rigid in a first state and reversibly deformable in a second state. When the platform (1) of the sensor device (10a-f), and/or the sensor device (3), is exposed to an impact force, in turn exposing a fastener element (20a, 20b) to a compressive force exceeding a critical load of that fastener element (20a, 20b), the fastener element (20a, 20b) goes from being in the first state to temporarily being in the second state.

Abstract: The present invention relates to an arrangement for improving shooting accuracy of a weapon comprising i) a barrel 13, ii) at least one component iii) a holding device mounted on said barrel 13, said holding device comprising means for holding 1a said at least one component allowing said at least one component to be displaced relative to and in parallel with the barrel and the means for holding from 1 mm to 200 mm during which displacement said at least one component does not absorb any substantial recoiling forces.

Abstract: A method is provided for determining temperature changes of an optical fibre having Fiber Bragg Grating (FBG) patterns provided in at least one portion (Portion 1) of the optical fibre. The optical fibre is connected between a first detector arrangement and a second detector arrangement. Light is emitted into the optical fibre in a first direction from the first detector arrangement, which receives reflections from the FBG patterns of the emitted light. The reflections are processed for determining a current temperature change related to the optical fibre. On the basis of predetermined criteria, light is emitted into the optical fibre in an opposite second, direction from the second detector arrangement. The second detector arrangement receives reflections from the FBG patterns of the light emitted in the second direction and the reflections are processed for determining a current temperature change related to the optical fibre.

Abstract: A broadband group antenna, comprising a plurality of antenna elements and an earth plane element, wherein the antenna elements are arranged in a common plane on top of the earth plane element and connected to a microwave transceiver unit via conductors provided in channels that extend through the earth plane element in a direction perpendicular to a main extension plane of the earth plane element, the antenna elements are arranged in a matrix pattern comprising first rows extending in a first direction and second rows extending in a second direction perpendicular to said first direction, wherein the antenna elements are in alignment with each other in said first rows and in said second rows.

Abstract: The present invention relates to a method 300 for facilitating simulation of a shot from a weapon, wherein the weapon is equipped with a laser device which works on the time-of-flight principle. The method comprises the step 310 of receiving an emitted coded laser pulse sequence from the weapon by a simulation device. The method further comprises the step 350 of transferring a returned coded pulse sequence which corresponds to the emitted coded laser pulse sequence back to the weapon by the simulation device. The simulation device is a range simulation device. The method further comprises the step of delaying 330 said transferring in relation to said receiving so that said delay is perceived by said weapon as a longer travel time of the emitted coded laser pulse sequence and the returned coded pulse sequence, respectively. The method further relates to a simulation device.

Abstract: The present invention relates to a liner for shaped charge for penetrating hard targets, wherein the liner comprises i) a carrier having a density below 9500 kg/m3; and ii) a coating deposited on said carrier comprising at least one metal and/or metal oxide, wherein the coating has a density greater than 10000 kg/m3; wherein the thickness ratio of the carrier to the coating ranges from 100:1 to 1:1, and wherein the oxygen content in the coating is less than 100 ppm atomic. The invention also relates to a method of producing such shaped charge liner and the use 0 thereof in a projectile for penetrating a hard military target.

Abstract: The filter unit has a center frequency and comprises a first dielectric substrate, a first conducting plane, and at least one transmission arrangement. The at least one transmission arrangement comprises a shunt node which has a shunt connection to the conducting plane. The electrical length of the shunt connection defines the center frequency of the filter unit. The transmission arrangement further comprises a plurality of transmission lines connected in series between an input port and an output port, wherein each port is connectable to auxiliary systems with a system impedance. Moreover, each transmission line has a characteristic impedance and wherein the characteristic impedance of each transmission line is less than the system impedance.

Abstract: A rebalancing device for rebalancing of an underwater vehicle comprises at least one thruster and at least one storage space. The rebalancing device comprises control circuitry. The control circuitry is configured to receive sensor data comprising information relating to a depth and an attitude of the underwater vehicle, and thruster data comprising information relating to thrust and orientation of thrust of the at least one thruster. The control circuitry is further configured to determine a difference between a centre of gravity, CoG, of the underwater vehicle and a centre of buoyancy, CoB, of the underwater vehicle based on the sensor data and the thruster data, and to determine a difference between a gravitational force acting on the underwater vehicle and a buoyancy of the underwater vehicle based on the sensor data and the thruster data.

Abstract: The present invention relates to a radar system for a vehicle, a method for controlling a radar system, a computer program product, and a vehicle comprising such a radar system. The radar system comprises an antenna arrangement for transmitting and/or receiving electromagnetic waves, a power supply connected to the antenna arrangement, the power supply being arranged to supply the antenna arrangement with operating power. The radar system further comprises an antenna controller connected to the antenna arrangement, the antenna controller being configured to control an operation of the antenna arrangement.

Abstract: The invention relates to an antenna. The antenna comprises a feed line having first and second ends on opposite sides of the feed line, wherein a transmission axis is defined as the axis extending between the first and second ends of the feed line. Further, the antenna comprises a plurality of antenna elements arranged along the feed line, protruding from the transmission axis. The antenna also comprises a first port at the first end of the feed line, wherein, at a first part of the antenna, the feed line, from the first port towards a reference point along the transmission axis, comprises antenna elements of gradually increasing length, configured to radiate in a first direction along the transmission axis from the reference point towards the first port during excitation in the first port.