104results about "Defensive equipment" patented technology

The present disclosure describes articles that may be used in protective gear, including but not limited to body armor, helmets, shields, or barriers. These articles may include a polymeric material coated with nanoparticles, in a single layer or in multiple layers, which are treated to form a composite. The articles may further include a ceramic layer and / or a back-face layer. Such articles may be useful for protecting an object or wearer against projectiles.

The invention relates to the technical field of layered products, and particularly discloses a skin material for wave-absorbing hiding and a preparation method. The skin material is of a layered structure and comprises a bionic micro-forest wave-transparent layer, a gradient transition layer, a wave-absorbing layer with a'skeleton-matrix 'dual-network structure, a reflecting layer and a heat-insulating layer which are sequentially arranged from top to bottom. A micro-cone array is arranged on the surface of the bionic micro-forest wave-transparent layer, so that broadband impedance matching is realized; the wave-absorbing layer comprises a three-dimensional ceramic skeleton and a magnetic-dielectric composite matrix filled in pores of the skeleton, and magnetic absorbents in the wave-absorbing layer are directionally arranged in the layer plane direction through a magnetic field auxiliary technology. The skin material prepared by the invention has excellent comprehensive performance of ultra-wideband wave absorption, high mechanical strength, light weight and high temperature resistance, and is particularly suitable for stealth requirements in the field of aerospace.

The present invention relates to a method for predicting the operational capability of ship systems on a watercraft after enemy action, wherein the method is carried out in three steps, wherein a ship model for the watercraft is specified, wherein the ship model is specified functional chains with the locations of components of the functional chains, wherein each functional chain has components, wherein at least one damage event and a location of the damage event are specified.

There is provided an acoustic black hole comprising: in a first axis, along a line, a variation from a first characteristic to a second characteristic to a third characteristic, wherein the acoustic black hole comprises a taper from the first characteristic to the third characteristic, and wherein the second characteristic is a deviation from the taper.

An impact barrier system (1) for deployment to a support structure for protection from an impact event, including a barrier (9) with an impact side and a shielded side. The barrier (9) is formed from at least one barrier portion (10), formed between the impact side and the shielded side of the barrier. The barrier portion (10) including a plurality of barrier layers (36), each being substantially aligned with a barrier system plane XY, and having two opposed faces, respectively facing the impact side and shielded side. The faces have a transverse axis Z, orientated substantially orthogonally to the barrier system plane Z having an outer perimeter forming an edge or edges. At least two of the plurality of barrier layers (36) are; a) at least partially overlapped about said transverse axis Z, and b) flexible.

The invention relates to the technical field of underwater noise simulation, and discloses an array system for simulating ship noise based on a gas explosion sound source, which comprises a unit console, a display console, an air compressor unit, a valve control box, a gas cylinder group, a comprehensive controller, a gas explosion sound source array and a ship power station, and is characterized in that the ship power station provides power for the air compressor unit and the comprehensive controller; the unit console is used for controlling the air compressor unit, and the display console is used for performing interface display and operation parameter setting on the comprehensive controller; the air compressor unit receives a control signal of the unit console and generates compressed air flowing to the valve control box; the valve control box receives a control instruction of the comprehensive control instrument and conveys compressed gas to the gas explosion sound source array through the gas cylinder set. The gas explosion sound source array further receives a control signal of the comprehensive control instrument and works according to the control signal. According to the invention, the impact noise of the ship engine can be simulated underwater, and the purpose of simulating the real working process of the ship diesel engine is achieved.

The invention relates to the technical field of ship equipment, and particularly discloses a ship-borne equipment lifting device which comprises a ship body, an opening and closing mechanism, a first locking mechanism, a lifting mechanism, a lifting platform and a second locking mechanism. The ship body comprises a first deck and a second deck, a closed cabin is defined by the first deck and the second deck, and the first deck is provided with an opening communicated with the closed cabin; the opening and closing mechanism is arranged on the first deck; the first locking mechanism is arranged on the side, facing the second deck, of the first deck. The lifting mechanism is arranged in the closed cabin and is connected with the second deck; the lifting platform is connected with the lifting mechanism, and the lifting mechanism is used for driving the lifting platform to move in the third direction; the second locking mechanism is arranged on the side, facing the second deck, of the first deck. The device can retract into the closed cabin to be hidden when not in use, and the stealth effect and the space utilization rate of a ship are improved.

The invention belongs to but not limited to the technical field, and discloses a single-point training missile traction interception net launching device and method, the device comprises a base, a power device is arranged on the base, and a launcher is arranged at the front end of the power device; and the intercepting net is connected with the emitter through a traction rope. The folding mode of the intercepting net comprises four-corner star folding and parallel folding. And the intercepting net is provided with a mass block and a non-uniform buoy. The working environment of the underwater navigation body touch net associated body motion model is in seawater; a plurality of counterweights are suspended in sea water by the two buoys through the net body, the net body is vertically unfolded by tensile force between the buoys and the counterweights, and the net body is basically not affected by stress in the horizontal direction and moves along with sea waves; when the navigation body vertically touches the net body at a certain navigation speed, the net body drives the buoy and the counter weight to do associated motion.

Camouflage coating systems, apparatuses, and methods described herein may include a coating deposited and bonded to a region of an external surface of an object to be camouflaged. The coating may include a plurality of stacked material arrangements deposited and bonded sequentially onto the region of the external surface and arranged to define a laterally distributed plurality of independent camouflage profiles. The coating may be configured to adjust coating emissivity at visual and IR wavelengths and to block or adjust infrared (IR) emitted by the object, thereby concealing the region of the external surface of the object from detection by a detection method in the visual, infrared, and electromagnetic regimes.

A modular maritime deployment system designed for multifunctional subsurface and surface operations, addressing a wide spectrum of maritime needs. This innovative system provides a comprehensive solution adaptable for both security applications, such as countering Uncrewed Underwater Vehicle (UUV) threats, and commercial operations, including marine cultivation and environmental monitoring. The system's modular design facilitates easy assembly, reconfiguration, and scalability to support various applications, ranging from deploying security barriers to optimizing conditions for the growth of seaweed, algae, and shellfish. It features components capable of deploying acoustic dampening materials, blast panels, and electromagnetic shielding, enhancing the versatility and utility of the system in diverse maritime environments. Integrated with advanced sensors and automated deployment mechanisms, the system ensures effective deployment and management of both surface and subsurface devices, making it an indispensable tool for modern maritime operations across commercial and security sectors.

The invention discloses a servo mechanism for detection, and the mechanism comprises a collection module which is used for collecting the speed data of an optical cabin in the rolling and azimuth directions, and collecting the speed data of the optical cabin in the pitching axial direction; the integration module is used for resolving azimuth coordinates and pitching coordinates of the two-axis turntable to a geodetic coordinate system based on the current pitching angle, rolling angle and azimuth angle of the unmanned ship output by the unmanned ship inertial navigation equipment and pitching, rolling and azimuth frame angle information of the optical cabin obtained from the rolling coded disc and the pitching coded disc; the resolving module is used for resolving the actual three-axis frame angle information of orientation, pitching and rolling of the optical cabin; and the compensation module is used for respectively differentiating the three-axis frame angle information and carrying out drift compensation on the gyroscope data. According to the invention, a two-axis stabilization platform is used to realize three-axis stabilization, and performance indexes of the optical cabin are kept unchanged. The hardware cost can be saved, and the redesign time is shortened.

An autonomous maritime surface vehicle (AMSV) operating in a maritime environment includes an on-board vision perception optimization system, which operates on raw image data generated by an on-board passive remove sensing system. The vision perception optimization system may optimize the raw image data based on respective entropies of sub-areas within the raw image data, e.g., by detecting sub-areas of the raw image data having lower entropy, and filtering or cropping the raw image data to include only the detected sub-areas. An on-board vision perceptor may apply one or more computer vision techniques to the optimized image data to detect presences of objects within the field-of-view of the AMSV, measure respective distances of the objects from the AMSV, detect and / or track the movements of the objects, etc. The AMSV may responsively control one or more operations of the AMSV based on the information generated from the applied computer vision techniques.

A payload re-positioning system for a maritime vehicle that includes a hull having a first portion and a second portion. The maritime vehicle includes a payload disposed within the second portion. The first portion may include an impact zone and a compressible zone. The impact zone is arranged to engage a target external to the maritime vehicle. The compressible zone is arranged to reduce the initial length of the first portion to a compressed length in response to the impact zone engaging the target external, thereby reducing a distance between the payload and the impact zone.

A floating barrier float section, and a waterfront barrier system formed from a number of connected float sections. An elongated main flotation tube has radially outwardly extending fence posts with connecting members, such as nets, between them, forming multiple longitudinal net sections about the circumference of the flotation tube, at least one of the net sections extending upwardly and forming a barrier to vessel passage. A vessel strike tends to rotate the flotation tube about its longitudinal axis, absorbing the energy from the strike and rotating the flotation tube to bring another net section into position. An underwater ballast member and a stabilizer float member may be added for additional resistance to rotation.

This invention discloses a lightweight, thin, broadband underwater sound-absorbing material, its preparation method, and its applications, belonging to the technical field of underwater sound-absorbing materials and their preparation. This invention solves the problems of existing sound-absorbing coverings used in small and medium-sized underwater unmanned equipment being too heavy and having insufficient low-frequency sound absorption. This invention uses PDMS, whose characteristic impedance matches that of water, as a substrate and modifies it with the two-dimensional nanomaterial MXene to prepare a lightweight, thin, broadband underwater sound-absorbing material. First, the abundant surface functional groups of MXene enhance the interaction with the polymer, increasing the stability of the composite structure. Second, utilizing the two-dimensional layered structure, high specific surface area, and excellent thermal properties of MXene, the thermoacoustic conversion, P-wave and S-wave conversion, relaxation, and damping losses of the PDMS matrix are significantly enhanced with almost no increase in the weight of the composite material, thereby improving its underwater sound absorption performance.

The utility model discloses an anti-pirate device for a ship. The anti-piracy device for the ship comprises a stairway, a first inclined ladder leading to a bottom deck is arranged on one side of the stairway, a second inclined ladder leading to a high deck is arranged on the other side of the stairway, a grating is hinged to the side, close to the second inclined ladder, of the stairway, a first lug plate is arranged on the side, away from the hinged end, of the grating, and a second lug plate is arranged on the bottom face of the second inclined ladder. When the first lug plate and the second lug plate are fixedly connected, the grating is fixed to the bottom face of the second inclined ladder, a third lug plate is arranged on the side, close to the first inclined ladder, of the stairway opening, when the first lug plate and the third lug plate are fixedly connected, the grating fixedly blocks the stairway opening, and a first through hole used for being connected with the second lug plate is formed in the end, protruding out of the bottom face of the grating, of the first lug plate. A second via hole used for being connected with the third lug plate is formed in the end, protruding out of the top face of the grille, of the first lug plate, and a first sheath is arranged on one side of the first lug plate around the second via hole. According to the utility model, the problem of poor protection safety in the prior art is solved.

The invention is suitable for the technical field of energy storage configuration, and provides a degaussing power supply system configuration method and device and a degaussing power supply system.The system comprises a main power supply and a flywheel energy storage device.The method comprises the steps that pulse data of needed pulses during operation of a degaussing coil are obtained; according to the preset power and the pulse data of the main power supply, determining the required energy required to be provided by the flywheel energy storage device and the dischargeable energy of the flywheel energy storage device; obtaining the target power of the flywheel energy storage device based on the difference between the required energy and the dischargeable energy and the energy required by the first pulse in the required pulses; and based on the target power and the preset power range, obtaining a configuration scheme of the flywheel energy storage device and the main power supply, so that the flywheel energy storage device and the main power supply are configured according to the configuration scheme. According to the degaussing power supply system with the configuration, the flywheel energy storage device can provide instantaneous high power, the degaussing response speed is improved, the impact of the first pulse on the main power supply and the power demand are reduced, and the power redundancy of the main power supply is reduced.

The submarine is good in concealment performance, so that the submarine is an important aggressive naval vessel of navy in various countries. However, due to the fact that conducting media exist in seawater, external communication of the submarine is difficult. For a submarine operated by a person, a launchman occupies a large space, and the manufacturing cost is high; and the rescue is difficult and the loss is huge when attacked underwater. The ultra-shallow unmanned submarine can overcome the defects. The submarine has the biggest characteristic that a semi-submersible, powered and movable radar radome which floats on the water surface is invented. The antenna can receive signals sent by any place on the earth through a satellite to attack an enemy ship, and the submarine is not easy to be found by enemies. The submarine is unmanned, small in size, good in concealment, large in endurance, simple in structure and low in manufacturing cost.

The invention provides a flexible protection armor for explosion in a ship cabin, the ship cabin and a protection method, and relates to the technical field of ship structure protection armor. The protective armor comprises a conveying pipeline and a flexible protective armor module, the flexible protective armor module comprises a bag body, the bag body is a flexible component and is internally provided with a cavity, the cavity of the bag body is communicated with the conveying pipeline, a spray valve is installed on the bag body, and the spray valve is communicated with the cavity of the bag body. The ship cabin comprises a ship cabin wall plate, the conveying pipeline is arranged on the wall plate of the ship cabin, and the bag body is unfolded. The protection method comprises the steps that the exhaust valve is opened, and liquid is conveyed into the bag body from the conveying pipeline; in the process of filling the bag body with the liquid, the bag body is gradually opened until the bag body is completely unfolded to reach a full state, and the exhaust valve is closed; the spray valve is opened, and the spray valve sprays high-speed jet mist clusters. The protective armor can be folded and unfolded, the occupied space is small, and solid-liquid coupling double-phase protection is achieved through the ejected high-speed jet flow mist cluster and the capsule body.

The present invention relates to a watercraft (10) having a trailing sonar, the trailing sonar having a tow cable region (30) and an antenna region (40), the tow cable region (30) of the trailing sonar being arranged between the watercraft and the antenna region (40) of the trailing sonar, a first submersible body (20) being arranged in front of the antenna region (40) and / or a second submersible body (20) being arranged behind the antenna region (40), characterised in that the submersible body (20) has at least one depth setting device.

The invention discloses a low-frequency broadband sound absorption covering layer embedded with diagonal gradient cylindrical cavities, and belongs to the technical field of low-frequency broadband sound absorption covering layers. The problem of contradiction between light weight and sound absorption performance of the sound absorption covering layer is solved. The sealing layer is connected with the perforation layer and the base layer and is subjected to integrated cold press molding, and the sealing layer and the perforation layer are both prepared from a PDMS polydimethylsiloxane silicone rubber material. The problem that the low-frequency sound absorption performance is poor due to the fact that a single material is adopted is solved; the radiuses and the intervals of the four layers of cylindrical cavities are designed in a gradient change mode, so that the sound absorption frequency band width is effectively increased, meanwhile, the thickness of the perforated layer is remarkably reduced, the practical application requirement of light weight can be met, and a better underwater low-frequency broadband sound absorption effect is achieved. The invention has the advantages of simple structure and manufacturing process.

The present invention relates to a non-uniform inlet channel type thruster, which comprises a duct. A stator assembly is installed at the front part inside the duct, and a rotor assembly is installed at the rear part. The duct is a through pipe body that is larger at the front and smaller at the rear, and comprises a pipe body 1 and a pipe body 2 that are connected front and rear. The pipe body 1 is symmetric about the left and right, and the pipe body 2 is an axisymmetric rotating body. The distance between the top surface of the pipe body 1 and the axis of the pipe body 2 is less than the distance between the bottom surface of the pipe body 1 and the axis of the pipe body 2; the stator assembly is located inside the pipe body 1, and the rotor assembly is located inside the pipe body 2; the stator assembly includes a stator hub, and stator blades are installed at intervals along the circumferential direction on the outer wall surface of the stator hub. The density of the stator blades distributed on the upper part of the outer wall surface of the stator hub is greater than that of the lower part; thus, the duct and the stator assembly together form a non-uniform inlet channel, so that the non-uniform incoming flow is converted into a uniform fluid through the non-uniform inlet channel and then flows into the rear rotor assembly, making the overall thruster have a smaller unsteady excitation force and a higher propulsion efficiency.

An autonomous maritime surface vehicle, AMSV (20a-e, fig 1) has a passive remote sensing system 602a and excludes or does not operate any on-board active remote sensing system. The passive remote sens

The present invention discloses a flexible explosion-proof armor and a design method thereof. The design method comprises: constructing a simulation model of the flexible explosion-proof armor. The flexible explosion-proof armor comprises the following structure: an armored sandwich layer in contact with the ship's hull, a composite material layer located outside the armored sandwich layer, and a polyurea coating located outside the composite material layer. The armored sandwich layer is composed of several stacked armored units, each of which includes a composite material layer and a foamed aluminum layer. The composite material layer is formed of a carbon fiber-reinforced aluminum alloy composite material. The present invention can design and calculate different dimensional parameters of flexible explosion-proof armor with a sandwich structure, facilitating improvements in the armor's explosion and impact resistance.

An autonomous underwater vehicle (AUV) comprising one or more propulsion devices that propel the AUV, one or more sensors that generate sensor data indicative of a signature of a vessel, memory, and processing circuitry. The processing circuitry determines an underwater position at which the AUV collects the sensor data, controls the one or more propulsion devices to move the AUV to the underwater position, receives the sensor data from the one or more sensors while the AUV is at the underwater position, and stores the sensor data in the memory.

The application discloses a movable water surface and underwater integrated offshore interception system, and belongs to the technical field of marine defense. A propeller is installed on each floating body, and an upper computer is installed on each floating body. A navigation light pointing system and a high-precision inertial navigation system are arranged on the floating body, and the navigation light pointing system and the high-precision inertial navigation system are electrically connected with the upper computer installed on the floating body. A mast is arranged on the top of the floating body, a camera of a 360-degree remote omnidirectional video system on the sea and a signal antenna of a MESH self-organizing network offshore base station are arranged on the mast, and the 360-degree remote omnidirectional video system on the sea and the MESH self-organizing network offshore base station are wirelessly communicated with the upper computer. The application adopts a modular assembly design, is convenient to disassemble, replace and store and maintain, has small engineering quantity, and has high concealment and is not easy to be found. The application adopts a cylindrical floating body, a cross propeller and a double-floating body shared mooring design, and the anti-overturning ability, the maneuverability and the offshore stability of the system are improved.

Autonomous maritime surface vehicles (AMSVs) are manoeuvred sideways 682 between first and second positions 684, 672 relative to objects 676 to create a synthetic baseline for the AMSV. Radiation received from the objects is sensed by sensing systems of the AMSVs. A perception algorithm is applied to data representing the radiation to detect objects 676 indicated by the data based on a synthetic disparity resulting from the synthetic baseline for the AMSVs. An orientation, location or speed, control instruction for at least a subset of the AMSVs is determined based upon information determined about the detected objects 676. Fig 6K

An apparatus for disabling of motor vessels moving in a waterbody. An energetic (i.e. explosive), as part of a floating assembly, is brought into contact with a motorized marine vessel's propulsion unit(s) and / or steering system, referred to generally as the underwater drive unit, due to the vessel's own motion relative to a floating line. The energetic then detonates and disables the underwater drive unit, thereby halting progress of the vessel while not harming any occupants thereof.

The invention provides a boarding assembly (3) for maritime boarding actions,—wherein a device carrier (307) is arranged to be erected, while attached via a flexible joint (303) to a support structure of a marine vessel, so as for an engagement device (305) attached to the device carrier (307) to engage a part of a target marine vessel to be boarded,—wherein upon such an engagement an elongated flexible element (322), e.g. a rope or a wire, can be pulled through a support device (325), e.g. a pulley block, of a holding assembly (321) mounted to the engagement device, so as to pull an elongated climbing device (323), e.g. a rope ladder, attached to the elongated flexible element (322), up towards the engagement device (305),—wherein the holding assembly (321) comprises an engagement mechanism (328) arranged to engage and retain the climbing device.