47results about "Defensive 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

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.

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.

The invention discloses a methanol dual-fuel marine anti-pirate quick blocking device for an outer stairway of a residential area, and belongs to the technical field of marine devices. Through the hinged design of the grating structure, the stairway edge and the stairway side edge, the quick release structure is combined to achieve quick overturning of the grating, linkage of the buckle structure and the unlocking structure is matched, the requirements for personnel passing and escape and fire fighting access functions required by SOLAS specifications can be met in the daily state, high-strength blocking of the stairway can be achieved through quick operation when attacks happen, and the safety of the stairway is improved. Pirates are effectively prevented from invading; the grid structure adopts the design of the steel grid and the reinforcing ribs, the protection strength is guaranteed, the locking reliability and the operation convenience are both considered through the unlocking mechanism that the buckle driven by the spring and the connecting rod are in linkage, and the whole structure meets the protection requirements of daily passing convenience, international safety specification conformity and pirate prevention rapid blocking.

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 relates to a military watercraft (100) comprising: - several vehicle components (104-110), each comprising one or more sensors (112-120), wherein at least some of the vehicle components belong to a weapon system (102), a propulsion unit (104) and a navigation system (106), wherein the sensors are configured to acquire measured values, the measured values ​​indicating operating states of the vehicle component containing the sensor acquiring the measured values ​​and / or states of the watercraft or its environment; - a database (122), wherein a history of measured values ​​from the sensors, in conjunction with a timestamp, is persistently and securely stored in the database;and - an electronic automation system (124), wherein the automation system is configured for the automatic and / or semi-automatic control of at least one of the vehicle components in real time depending on the measured values ​​and / or depending on a user input from a user in response to an output of the measured values ​​via a user interface.

Disclosed is a method and system to provide protection for maritime vessels from multiple threat types including shoulder launched rocket propelled threats, ballistic (howitzer), and larger scale missile systems. According to an exemplary embodiment, the protection system is based on the ballistic launch (from the protected vessel) of an explosive charge(s) aimed ˜5 meters away from the vessel and ˜1 meter beneath the waterline followed by detonation to enable the formation of a water wall. Through the formation of a water wall, incident threats can be initiated (piezo fuze) and passivated through dynamic interaction with the water formation. In addition, the upward velocity of the water wall can enable an upwards rotation of the incident threat changing the orientation of the warhead jet formation (for shape charge warheads) above the vessel.

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.

A landing craft (10) comprising a hull (100). The hull (100) extends along an x-axis, a first end (102) of the hull (100) and a second end (104) of the hull (100) spaced apart from one another along the x-axis. The hull (100) extends along a y-axis, a first side (106) of the hull (100) and a second side (108) of the hull (100) spaced apart from one another along the y-axis. The hull extends along a z-axis, a base side (110) and a top side (112) of the hull (100) spaced apart from one another along the z-axis. The hull (100) further comprises a first hull wall assembly (140) spaced apart from a second hull wall assembly (150) in the direction of the y-axis by a deck assembly (142). The first hull wall assembly (140) comprises a first weapon unit (400) and / or the second hull wall assembly (150) comprises a second weapon unit (402). The or each weapon unit (400, 402) are operable to have, and to move between a hidden position in which the or each weapon unit (400, 402) is located within the respective hull wall assembly (140, 150); and a firing position in which the or each weapon unit (400, 402) is located outside of the respective hull wall assembly (140, 150).

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 military watercraft (100) containing: - multiple vehicle components (104-110), each of which includes one or more sensors (112-120), wherein at least some of the vehicle components are part of a weapon system (102), a propulsion unit (104), and a navigation system (106), and the sensors are designed to detect measurement values, which indicate operating states of the vehicle components that include the sensors detecting the measurement values and / or states of the watercraft or the surroundings thereof; - a database (122), said database storing a history of measurement values of the sensors in a persistent and protected manner in connection with a time stamp; and - an electronic automation system (124), said automation system being designed to automatically and / or semi-automatically control at least one of the vehicle components in real-time on the basis of the measurement values and / or on the basis of an input of a user, said input being entered via a user interface in response to an output of the measurement values.

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.

A capture net deployment system for mounting on a deployment vessel. A capture net, preferably having a buoyant top rope and a weighted bottom rope, is folded so as to fit within a box. The box may have a rotating lid, with the lid forming a launching surface for the capture net when the lid is fully opened and extending toward the stem of the deployment vessel. A ridge in the lid assists in keeping the capture net untangled. A drogue may be attached to the capture net to assist in pulling it into the water from the box, enabling the capture net to be deployed at relatively high speed. Other embodiments have a sliding lid.

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 invention relates to a military watercraft (100) comprising: - several vehicle components (104-110), each comprising one or more sensors (112-120), wherein at least some of the vehicle components belong to a weapon system (102), a propulsion unit (104) and a navigation system (106), wherein the sensors are configured to acquire measured values, the measured values ​​indicating operating states of the vehicle component containing the sensor acquiring the measured values ​​and / or states of the watercraft or its environment; - a database (122), wherein a history of measured values ​​from the sensors, in conjunction with a timestamp, is persistently and securely stored in the database;and - an electronic automation system (124), wherein the automation system is configured for the automatic and / or semi-automatic control of at least one of the vehicle components in real time depending on the measured values ​​and / or depending on a user input from a user in response to an output of the measured values ​​via a user interface.