38results about "Offensive equipment" patented technology

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.

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.

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 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.

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

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

Disclosed is a method for combating a torpedo, having the following steps: a) detecting the torpedo; b) tracking a trajectory of the torpedo; c) navigating a combating projectile to a specified distance from the torpedo; and d) generating a detonation by means of the combating projectile (20) in order to combat the torpedo when the combating projectile (20) has reached the specified distance from the torpedo.

Methods and apparatus for inspecting an underwater vehicle. In embodiments, a system receives a SAR image for at least a portion of an exterior surface of an underwater vehicle and performs CCD processing to compare a baseline SAS image for the underwater vehicle with the received SAR image of the underwater vehicle to generate a CCD output corresponding to a measure of similarity of the baseline SAS image and the received SAS image. The system determines whether there was tampering of the underwater vehicle based on the measure of similarity.

The application relates to the technical field of layered products, and particularly discloses a skin material for wave absorption and hiding and a preparation method. The skin material has a layered structure and comprises, from top to bottom, a biomimetic micro-forest wave-transparent layer, a gradient transition layer, a wave-absorbing layer with a'skeleton-matrix' double-network structure, a reflecting layer and a heat-insulating layer; the biomimetic micro-forest wave-transparent layer is provided with a micro-pyramid array on the surface, so that wide-frequency impedance matching is realized; the wave-absorbing layer comprises a three-dimensional ceramic skeleton and a magnetic-dielectric composite matrix filled in the pores of the skeleton, and the magnetic absorbent in the wave-absorbing layer is arranged in the layer plane direction through magnetic field auxiliary technology. The skin material prepared by the application has excellent comprehensive properties of super-wide-frequency wave absorption, high mechanical strength, light weight and high-temperature resistance, and is particularly suitable for stealth requirements in the field of aviation and aerospace.

The utility model discloses a novel anti-pirate door lock device in the field of shipbuilding, which comprises a rectangular door frame and an anti-pirate door arranged corresponding to the inside of the door frame, a first lock nose hole is arranged on the anti-pirate door, a U-shaped lock nose backwards penetrates through the first lock nose hole, two first annular baffle plates are fixedly arranged on the U-shaped lock nose, and the two first annular baffle plates are fixedly arranged on the first annular baffle plates. The two first baffles are welded and fixed to the rear side of the anti-pirate door, a second door frame baffle is welded and fixed to the door frame and corresponds to the lock nose, two second lock nose holes are formed in the positions, corresponding to the two ends of the U-shaped lock nose, of the second door frame baffle, and the two ends of the U-shaped lock nose backwards penetrate through the two second lock nose holes. The U-shaped lock nose is provided with two threaded sections corresponding to the second door frame baffle. The peripheries of the two threaded sections of the U-shaped lock nose are each sleeved with a butterfly nut pressing the second door frame baffle. And a door lock is hung on the U-shaped lock nose. Safety can be improved, and the situation that the lock is damaged due to the fact that the door lock is found by pirates is avoided.

The utility model discloses unmanned projection barrier-breaking equipment, which relates to the field of unmanned ship barrier-breaking, and comprises a ship body, a plurality of ammunition casting devices, a plurality of unmanned projectile-breaking devices, a plurality of unmanned projectile-breaking devices, a plurality of unmanned projectile-breaking devices, a plurality of unmanned projectile-breaking devices, a plurality of unmanned projectile-breaking devices, a plurality of unmanned projectile-breaking devices and a plurality of unmanned projectile-breaking devices, according to the unmanned projection barrier breaking equipment, when the symmetrically-arranged translation driving pieces stretch out and draw back, a connecting shaft is pushed, a supporting block and a driving device which are fixed to the bottom of the ammunition projection device are driven to rotate around the axis of a rotating shaft in a pitching mode, and stepless adjustment of the projection angle is achieved; the pre-tightening force of the torsional spring enables the eccentric wheel to abut against the bottom of the ammunition casting device all the time, vibration impact is absorbed through deformation of the torsional spring when a ship body jolts, the launching posture is kept stable, and when the lateral force borne by the ammunition casting device is large, loads borne by the two translation driving pieces are different, and the movement speed and position of the ammunition casting device are affected. The pre-tightening force of the torsional spring enables the eccentric wheel to abut against the ammunition casting device all the time, and the locking and supporting stability of the angle adjusting unit on the ammunition casting device is guaranteed.

The application relates to the field of layered composite materials, and particularly discloses a material plate compatible with electromagnetic waves and underwater acoustic waves, which comprises a composite absorption layer and an underwater acoustic absorption layer; wherein the composite absorption layer comprises an electrically conductive substrate and a plurality of layers of alternately stacked sound absorption material plates and wave absorption functional plates, the wave absorption functional plate is composed of a dielectric substrate and a patterned resistive film; and the underwater acoustic absorption layer is a viscoelastic material matrix embedded with a cavity structure. Wideband resonant absorption and impedance matching of electromagnetic waves are realized through multi-size resistive film patterns, and the sound absorption material plates and the cavity-matrix in the underwater acoustic absorption layer are used in cooperation to preliminarily consume and deeply dissipate underwater acoustic waves. The application improves the impedance mismatching problem of underwater acoustic absorption and electromagnetic absorption, has the advantages of wideband, high efficiency and compact structure, and is suitable for radar and sonar compatible stealth skins of equipment such as ships and cross-medium vehicles.

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.

The invention relates to a system (18) comprising a towed body (20) for towing behind a water vehicle (50) and a signal processing unit (54). The towed body (20) has a pair of depressors (24), wherein each of the depressors (24) has a variable inclination angle in order to allow a depth control of the towed body. The signal processing unit is designed to actuate the depressors of the pair of depressors (24) independently of each other.

The invention discloses a light and thin broadband underwater sound absorption material and a preparation method and application thereof, and belongs to the technical field of underwater sound absorption materials and preparation thereof. The problems that an existing sound absorption covering layer applied to small and medium-sized underwater unmanned equipment is too heavy, and the low-frequency sound absorption effect is insufficient are solved. According to the invention, PDMS with characteristic impedance matched with that of water is used as a base material, and a two-dimensional nano material MXene is used for modification, so that the light, thin and broadband underwater sound absorption material is prepared. Firstly, abundant surface functional groups of MXene are utilized to enhance the interaction with a polymer, and the stability of a composite structure is improved; and secondly, by utilizing the characteristics of two-dimensional layered structure, high specific surface area, excellent thermal performance and the like of MXene, the thermoacoustic conversion, longitudinal and transverse wave conversion, relaxation and damping loss of the PDMS matrix are remarkably enhanced while the weight of the composite material is hardly increased, so that the underwater sound absorption performance of the composite material is improved.

Removable device for repelling marine mammals, such as orcas, intended for use on a ship's rudder. The invention relates to a removable device (1) for repelling marine mammals, such as orcas, intended for use on a ship's rudder, comprising: - at least one flexible support (2), preferably elastic, the length of which is adapted to surround an outer surface of a portion of a ship's rudder, the flexible support incorporating a plurality of prongs (3) distributed along its length, - at least one removable fastening element (4) for the flexible support in a configuration where it surrounds the outer surface of a portion of a ship's rudder. Figure for the abstract: Fig. 1

The invention relates to a removable device (1) for repelling marine mammals, such as orcas, intended to be fitted to a ship's rudder, comprising: - at least one flexible support (2), preferably elastic, the length of which is adapted to surround an outer surface of a part of a ship's rudder, the flexible support incorporating a plurality of spikes (3) distributed along its length, - at least one removable fixing element (4) for the flexible support in a configuration where it surrounds the outer surface of a part of a ship's rudder.

The invention discloses a naval vessel demagnetization processing method, device and system which can still carry out demagnetization processing in naval vessel navigation. The ship demagnetization processing method according to one embodiment of the invention comprises the following steps of: performing demagnetization processing before a ship sails in a magnetic processing station; calculating a first compensation current based on the naval vessel navigation related information of the naval vessel, wherein the first compensation current is used for compensating a magnetic field generated in naval vessel navigation; and calculating a second compensation current according to a preset event occurring in the navigation of the naval vessel, wherein the second compensation current is used for compensating a magnetic field generated in the navigation.

The utility model discloses a floating fence device of an offshore wind power plant, and belongs to the technical field of offshore wind power plants, the floating fence device comprises a first-layer fence, and the first-layer fence is arranged on a wind turbine generator on the periphery of the wind power plant; the first-layer fence comprises a plurality of sections of first connecting devices, and each section of first connecting device is connected with two adjacent unit point positions; the first connecting device is used for preventing floating objects on the sea from entering the wind power plant. In the application, the first layer of fence and the first connecting device are arranged and connected between the point positions of the wind turbine generator sets at the outermost periphery of the wind power plant, so that offshore floating objects outside the wind power plant can be blocked and prevented from entering the wind power plant, collision to the internal wind turbine generator sets is avoided, and the safety of internal facilities of the wind power plant is ensured.

Sustainable method and environmentally-friendly device for improved survey data acquisition by providing a vessel for use in subsea surveying, at least one lifting hydrofoil, a method of acquiring subsea survey data, a method of producing a vessel, and the use of a vessel. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.

The invention relates to the technical field of sound absorption and noise reduction, and discloses a sound absorption and impact resistance superstructure, a preparation method and a sound absorption device.The sound absorption and impact resistance superstructure comprises a plurality of impact resistance sound absorption assemblies which are fixedly connected in a stacked mode, each impact resistance sound absorption assembly comprises a sound absorption shell, a cover plate and an impact resistance unit, and a sound absorption channel is formed in the sound absorption shell; the cover plate is located on one side of the sound absorption shell and covers one opening of the sound absorption channel, and a hole channel communicated with the sound absorption channel is formed in the cover plate. The anti-impact unit is arranged in the sound absorption channel, and the anti-impact unit is provided with a first cavity channel penetrating in the first direction. According to the sound-absorbing and impact-resisting superstructure, the impact-resisting units are arranged in the sound-absorbing channels, so that when the sound-absorbing and impact-resisting superstructure is impacted, impact energy can be effectively absorbed, impact damage is reduced, the sound-absorbing and impact-resisting performance of the superstructure can be coordinated, and the safety protection level can be improved.

The utility model belongs to the technical field of full-automatic ship equipment, and provides a stealth protection device for ship equipment. Comprising a ventilation device, a door stopper, a door, a sealing device, a protection device body and a cover plate. Three doors capable of being opened are arranged on the protection device body, and the doors can be closed and opened by rotating the hinges. A door stopper is arranged on the protection device body and used for fixing an opened door. Two detachable doors are arranged on the lateral front portion of the protection device body, and a cover plate is arranged below the front portion of the protection device body. A ventilation device is arranged above the rear part of the protection device body, and a sealing device is arranged in front. A carbon fiber composite interlayer is arranged in a shell of the protection device body, the inner surface or the outer surface of the protection device body is coated with a stealth coating, and the outer surface of the protection device body is coated with corrosion-resistant paint. By adopting the polyhedral appearance reflection principle and utilizing the wave absorbing effect of the carbon fiber composite interlayer and the wave absorbing effect of the stealth coating, the protection device is smooth and simple in appearance, light in weight and good in stealth effect, and the requirements of equipment stealth and adaptability are met.

The invention provides a porthole for a ship, and belongs to the technical field of portholes, and the porthole for the ship comprises a shell which is arranged on the inner side of a ship wall and is provided with a containing space, and the ship wall is provided with a through hole communicating with the containing space; the porthole inner frame is arranged on the side, away from the ship wall, of the shell, and glass matched with the through hole in shape is arranged on the porthole inner frame; the protection part is arranged in the accommodating space; and the driving part is configured to drive the protection part to be unfolded to shield the through hole or drive the protection part to be folded to one side of the accommodating space to expose the through hole.

A floating barrier system has a plurality of connected floating barrier units. Capture net segments are positioned on the floating barrier units by support post members, forming a barrier to vessel passage. Lanyards attach the ends of the capture net segments to the floating barrier units. Upon a vessel striking the capture net segments with sufficient force, the capture nets detach from the support post members and / or pull the support post members over, and the forces from the vessel are transferred via the lanyards to the floating barrier unit. The vessel is prevented from fully passing over the floating barrier unit, thus itself forming a barrier to passage by other vessels.

The application relates to the technical field of underwater unmanned vehicles, in particular to a flexible handling test device, a handling method and a handling method for an underwater vehicle, which comprises a trailer, a movable clamping and releasing device for clamping and releasing a flexible rope net is arranged on the trailer, and a steel plate connecting piece for connecting the underwater unmanned vehicle is arranged on the trailer; the clamping and releasing device is used for controlling the flexible rope net to be released. The embodiment of the application has a simple structure and can be used for testing the flexible capture of the underwater unmanned vehicle.