76 results about "Military ship" patented technology

A multi-hull design suitable for various size boats ranging from racing craft to the large military ships. The apparatus is a polygonal boat hull apparatus having a bow and stern wave penetrating feature. The hull is made from triangular-shaped essentially flat panels which provides for substantially stability and strength. The hull can be made in various configurations ranging from catamarans, triamarans to multiple hull designs in accordance with the projected use of the vessel. The invention includes a drive pod system having a plurality of propulsion units. The invention also provides at least one hydropneumatic cylinder that adjusts the angle of attack of the propulsion unit. The hull may also be rigged as a multi-masted sailing vessel.

The invention discloses a method for detecting a ship in an aerial image of an unmanned aerial vehicle based on deep learning. The method comprises the steps that firstly, aerial images of unmanned aerial vehicles including military ships and civil ships are collected and marked, and a ship database is obtained; Then, the obtained ship database is sent to a deep learning network for training untilthe network converges; And finally, a ship target in the aerial image of the unmanned aerial vehicle is detected by using the trained deep learning network and the weight file, and outputting a detection result. The method has better accuracy and robustness, effectively solves the problem of small target detection in the aerial image of the unmanned aerial vehicle, also solves the problems of environmental interference, illumination influence and low accuracy of ship detection in a traditional image processing algorithm, and can be suitable for ship detection in different scenes.

The invention relates to a cloth which can prevent the leakage of infrared and radar, which can be used in military ship and plane. It can be made into protective cover to cover the ship and plane to avoid the infrared detector and radar of enemy. The invention is characterized in that: it has a certain thickness and is divided into inner and outer layers, while the inner layer is the infrared leakage-proof layer made from eccentric glass wool to avoid the emission of infrared generated in the ship; and the outer layer is the microwave energy transformation layer made from terylene cloth which is formed by million of six-edge hollow non-top cylinders in beehive arrangement, while the bottom is a arc surface, and each six-edge hollow non-top cylinder is a energy transformation unit. The six side surfaces and the bottom are plated with magnetic powder while the contents on said surfaces are different to absorb the radar waves from in different frequencies and different directions. The invention can prevent the ships from detected by the infrared detector and radar of enemy.

The invention discloses an acoustic cover layer beneficial for underwater damping and sound absorbing of ships. The cover layer is composed of a surface layer, a sandwich sound absorbing layer, and anadhesive layer. The surface layer is made of glass fiber reinforced plastic, wherein the density of the glass fiber reinforced plastic is close to water density, and the impedances of the glass fiberreinforced plastic and water are matched. The sandwich sound absorbing layer is composed of polyurethane and vermiculite powder and is prepared by a layering method. The sandwich sound absorbing layer has a functional gradient structure, whose material parameters change along with the thickness direction. Hollow glass beads are distributed in the sandwich sound absorbing layer; the content of thehollow glass beads decreases from outer to inner along with the thickness direction, the density increases; the adhesive layer and the surface layer are adhered on the steel shell of a ship, and theadhesive layer is made of an visco-elastic material. The cover layer satisfies two conditions that the impedances are matched and the sound attenuation performance is good; the target strength and radiation noise of ships and underwater structures can be reduced effectively; the anti-detection performance and stealth performance of ships and underwater structures are both improved; and the cover layer has a wide application prospect in fields such as military ships, civilian ships, underwater structures, and the like.

The invention provides a production method of soft polyimide foam, comprising the following steps: adding one or more than two kinds of aromatic dianhydride in polar solvent to be totally dissolved; then, adding aromatic diamine to generate amic acid; after reaction, adding two or more than two kinds of foaming agents, and adding one or more than two catalysts and surfactants; at room temperature, mixing the mixture with water and one or more than two kinds of aromatic isocyanate, and foaming; and finally, ripening generated foam in a microwave oven and a high temperature furnace. The polyimide foam obtained by the invention is soft, has elasticity and has favorable sound absorption performance and fire resistance; and the foam density is 4.0-8.0 kg/m3; foam stops firing when foam is far away from fire, so that the amount of emitted smog is small, and no drippage objects exist. Meanwhile, the polyimide foam of the invention has favorable thermal insulation property. The polyimide foam of the invention can be suitable for the fields of aerospace, military ships and the like.

The invention relates to a repeating aircraft catapult which is a device for supplying power for aircraft in short distance on land, warships and aircraft carrier decks. The repeating aircraft catapult comprises a first-level acceleration main shaft, a second-level acceleration main shaft, a transmission shaft, an acceleration spiral orbit, a deceleration spiral orbit, a counterweight spiral orbit, a change gear, a rotary power source, an acceleration orbit, a main shaft positioning wheel, a transmission trolley, a trolley starting hook, a trolley arm, an arm closing spring, a trolley acceleration wheel, a trolley positioning wheel, a trolley pass-back orbit, a pass-back motor, a trolley starting wheel, a starting wheel motor, a starting wheel switch, a pressure switch, an equipment main switch, a main power supply, an equipment steel skeleton, a bearing or bearing bush, an electromagnet and the like. The repeating aircraft catapult can accelerate 40-ton aircraft to 80 m/s in 105-m distance within 5 s. The invention has the characteristics of less auxiliary equipment, simple maintenance and mature power equipment technology, can adopt gas engines, steam turbines and the like, and can continuously accelerate aircraft take-off.

The invention discloses an unmanned aircraft landing ship device and particularly relates to a close-distance landing device for a sea unmanned aircraft of a common ship. A frame slope landing runway (2) capable of being unfolded or folded is dragged by a steel chain (5) at a gate of an aircraft parking cabin (3) at the rear part of the ship (4), and a plurality of inflated airbags (6) which are distributed in front and back directions are arranged at the lower part of the frame slope landing runway (2). The frame slope landing runway (2) is formed by mutually connecting a plurality of frame boxes (2a) made of metal plates, and the height of the frame slope landing runway (2) gradually decreases from the front part of the gate of the aircraft parking cabin (3) in the back direction of the extending-out tail end. The inflated airbags (6) are inflated by a pressure air pump or are inflated to expand and deflated to shrink by virtue of the reaction of a chemical medicine. The two-third to four-fifth part of the frame slope landing runway (2) from the rear part of the tail in the front direction of the gate of the aircraft parking cabin (3) is immersed in seawater. When the aircraft lands, the purposes that the landing sliding distance of a large unmanned attack aircraft is shortened and the aircraft safely lands are achieved by the collision between the aircraft and the water, are realized. According to the device, the common ship has the sea landing capacity of the large unmanned attack aircraft, and the sea fighting strength of a common military ship can be improved.

The invention discloses a wave-swing-resistant vegetable cultivation device. The device comprises a conical cavity, a balance ring, at least one nozzle, a liquid passage pipe and a pump, wherein a plurality of through holes are arranged on the peripheral wall of the conical cavity for arranging vegetable seedlings, the balance ring drives the conical cavity to freely swing on a fixed base through a bearing, one end of the liquid passage pipe is connected with an outlet of the pump, and the other end of the liquid passage pipe is connected with the nozzle which is arranged in the conical cavity for the aerosolized culture of the vegetables. The device of the invention has the advantages of convenient unit combination, high space utilization, wind swing resistance, automatic control and convenient use, is suitable for supplementing and guaranteeing fresh vegetables for military ships and ocean fleets and can be also used for producing vegetables in harsh environments, such as islands and reefs.

The invention discloses a radial turbulence preventing ship propeller. 1-2 turbulence preventing bars are manufactured integrally on each propeller blade. The turbulence preventing bars include the blade face turbulence preventing bars and the blade back turbulence preventing bars. The center line of each turbulence preventing bar is a spatial helical line with R2 as the radius and the center of a rotary shaft of the propeller as the circle center. Compared with a ship propeller without turbulence preventing bars, the radial turbulence preventing ship propeller has the advantages that through the turbulence preventing bars, the velocity and the degree of radial turbulence on the blade faces of the ship propeller can be effectively decreased, blade tip cavitation bubbles and vibration are reduced, noise and acoustic resonance are lowered, efficiency is improved, and thus energy is saved; meanwhile, people can live on a ship more comfortably, and concealed performance of a military ship can be improved.

The invention relates to a ship safety device which comprises an inclination preventive pressurizing device and a collision water leakage preventing device.The inclination preventive device is designed by taking the circumstance that a ship comes across strong wind, big waves, sharp turns and other accidents like seasickness and shipwreck and mainly comprises an internal cylinder, a balance rod and a pressurizer which cooperatively act to maintain levelness of the ship.As for the collision water leakage preventing device, a ship body is designed into two layers, in other words, an original single-layer steel plate is divided into an inner layer and an outer layer which account for 30% and 70% respectively, and an interlayer of 20-30 inch is formed.Flame-retardant foam is serially connected in a bagged manner to serve as a filler, so that the whole is higher in toughness; during a collision, soft breaking area is small, and higher buffering performance is realized.When the outer layer is broken, the inner layer is waterproof, and when the two layers are broken, the filler can automatically block a leaking position along with attraction of water flow; on the above basis, anti-attack capability of warships can be improved greatly, and inconvenience is expected to be additionally explained in details during actual application and testing for better doing.

The invention relates to a resistance reduction and efficiency improvement ship which comprises a ship body (1) and a propeller (2), the bottom of the ship body (1) is provided with a diversion trench (11), the propeller (2) is located in the diversion trench (11) and mounted in the ship body (1), the rear portion of the ship body (1) is provided with an eddy dissipation device (12), the left side wall, located under water, of the tail of the ship body (1) is provided with a left inclined downstream groove (13), and the right side wall, located under water, of the tail of the ship body (1) is provided with right inclined downstream groove (14).When the ship sails forward, eddy formed at the tail of the ship body is smaller, backward dragging force to the ship body is smaller, the forward sailing speed can be raised, power efficiency can be improved, the speed of the ship which sails backwards can be higher, efficiency is higher, and steering is more flexible and convenient; compared with a warship of the same level, the sailing speed increase, the sailing speed, the steering speed and the backward sailing speed are further increased compared with an ordinary ship and warship under the situation that the output power is consistent, the advantages are more obvious, and the effect is more outstanding.

The invention discloses a military ship and civilian ship automatic identification method based on deep learning, and belongs to the field of automatic target identification based on the image. The method can be applied to the field of coast defence, weapon and equipment intellectualization and situation assessment. According to the method, an algorithm model of densely connected convolution layers is redesigned for the problems that all the layers of the conventional target identification network based on deep learning are unidirectionally connected and the feature expression capacity is insufficient. The algorithm model reuses the features of each layer by using the dense connection mode so that the target identification average accuracy of the algorithm model can be enhanced; the full connection layer of excessively high weight parameter is eliminated by the algorithm model by using the full convolution feature extraction mode, and the algorithm model trained by the mode is smaller;besides, the problems of gradient diffusion and gradient expansion can be solved by the algorithm model.

The invention discloses a ship target fine detection method with rotation invariance, and the method comprises the steps: labeling a sample remote sensing image through a three-point labeling method; calculating to obtain position information, category information and confidence of a target in the sample remote sensing image; constructing to obtain a neural network model; performing feature extraction and recognition on the sample remote sensing image through a neural network model; updating parameters in the neural network model through a gradient descent algorithm; after the neural network model is trained for multiple times, obtaining a target refined detection model; and taking a to-be-identified remote sensing image as input of the target fine detection model, and outputting position information, category information and confidence of a target in the to-be-identified remote sensing image. The method has the capability of learning the geometric attitude information of the target, implies the orientation of the target in the triangular frame, can effectively predict the direction and position information of the target, and achieves the judgment of the types and directions of various types of military ships and civil ships.

The invention relates to unmanned small-size submarine fighting weapons and particularly discloses an unmanned torpedo submarine. The unmanned torpedo submarine comprises a submarine body, moving wings, a buoy transceiver antenna and a rotary type propeller. The submarine body is closed and is in a streamline shape; the inside of the submarine body is provided with a power storage cabin, a floating adjusting cabin, a controlled command cabin and a torpedo launching device. The moving wings are arranged on the left and the right of the submarine body with one pair in the front and one pair in the rear and can stir up and down; the buoy transceiver antenna is arranged at the top of the submarine body and connected with the controlled command cabin through wires, can stretch out and retract back and is buoyant; the rotary type propeller is arranged at the tail end of the submarine body and can rotate on the plane at 360 degrees. The unmanned torpedo submarine can achieve concentration envelopment of large enemy warships, thereby having strong deterrent force, and can achieve concentration siege to obtain strong lethality; besides, the unmanned torpedo submarine can not only achieve effective strike, but also greatly reduce fighting costs and avoid injuries and deaths.

A military vessel may include a directable weapon and an antenna. The antenna can be swiveled from a first position, in which the antenna is disposed essentially vertically, into a second position, in which a height of the antenna above the military vessel is reduced to increase a directing range of the directable weapon compared to the first position. A method for operating a military vessel with a directable weapon and an antenna may involve swiveling the antenna from a first position, in which the antenna is disposed essentially vertically, into a second position, in which the height of the antenna above the vessel is reduced to increase the directing range of the weapon compared to the first position.

The invention relates to a spring type multi-functional air cannon free of an air source. The air cannon is characterized in that the elastic potential performance of a spring is collected by the aidof a mechanism and becomes the kinetic energy of the air cannon after being shot, the bird repelling effect is relatively ideal, and accidents that birds strike airplanes can be effectively preventedand reduced; during emergency rescue and disaster relief, life rafts, life buoys, life lines and anchor hooks can be thrown, and cables can be thrown on warships; during dealing with pirates, water can be sprayed by the aid of water cannons, and stones and bricks can be thrown; during fire extinguishment for high-rises, fire extinguishing bombs can be shot, and bricks and stones can be thrown to break doors and windows; during anti-terrorism actions, extra-large catching nets, bombs, tear bombs and smoke bombs can be shot; and during meeting with foreign guests, the air cannon can be used as asalute.

The invention discloses a hybrid weighting type surface acoustic wave single-scale wavelet transform processor, which is characterized by comprising a piezoelectric substrate, wherein one end of the piezoelectric substrate is provided with an input energy converter; the other end of the piezoelectric substrate is provided with an output energy converter; and after an electric signal is added to the input energy converter to carry out wavelet transform, the input energy converter outputs a surface acoustic wave wavelet transform signal to the output energy converter and finally outputs an electric signal wavelet transform signal, wherein the input energy converter adopts two weighting modes: wavelet function envelope amplitude weighting and envelope weighting. The hybrid weighting type surface acoustic wave single-scale wavelet transform processor has a diffraction restriction function, is simple in design and is suitable for fields, such as radars, communication, military ships, sensors and the like.

The invention discloses a safe fishing and hoisting device for maritime searching and rescuing. The safe fishing and hoisting device includes a warship board; an adjustable device is fixedly connectedwith the top of the warship board, a hosting steel wire rope is wound on the surface of the a winding-up roller; a first auxiliary rod is rotatably connected with a first driving wheel and a second auxiliary rod is rotatably connected with a second driving wheel; a hoisting draw ring is arranged at the end, away from the winding-up roller, of the hoisting steel wire rope in a sleeving mode, and ahoisting plate is fixedly connected with the end, away from the hosting steel wire rope, of the hoisting draw ring and both sides of the bottom end of the hoisting plate are fixedly connected with hoisting rods, wherein the bottom ends of the hoisting rods are fixedly connected with hoisting lock catches; and the hoisting lock catches are clamped with safe buffering devices. The invention belongsto the technical field of maritime searching and rescuing in the sea. The safe fishing hoisting device for the maritime searching and rescuing achieves the purposes of improving the searching and rescuing efficiency, reducing damage for people during the jolt and the security of being saved is improved.

The invention relates to the technical field of ship devices, and discloses handrail rigging used for ships. The handrail rigging used for the ships comprises a steel wire rope. The two ends of the steel wire rope are connected with end portion connection pieces correspondingly. The handrail rigging used for the ships further comprises a first connection piece and a second connection piece. The first connection piece and the second connection piece are used for being connected with handrail columns correspondingly. The first connection piece is connected with the end portion connection piece at one end of the steel wire rope through an insulating piece. The second connection piece is connected with the end portion connection piece at the other end of the steel wire rope through an insulating piece. The end portion connection pieces are arranged at the two ends of the steel wire rope of the handrail rigging used for the ships correspondingly, the first connection piece and the second connection piece are connected with the end portion connection pieces through the insulating pieces correspondingly. When the ships work in areas with disordered electromagnetic fields, electric currentis blocked by the insulating pieces and cannot be transmitted to the handrail columns or ship bodies, insulation between the handrail rigging and the ship bodies is achieved, and the requirement of the military ships for electromagnetic compatibility is met.

The invention relates to an emergency warning system for grounding and rocketing of a ship, which can provide the variation rate of water depth with time and the distance of navigable objects in navigable sea area. The system has a plurality of transducers, After the signal of the transducer is processed by the early warning processor 5, the data such as the change rate of the water depth with time and the distance of the navigable object in the navigation area of the ship can be displayed on the integrated situation display 6 in real time. When the data of each group reaches the alarm set value, the system starts to alarm, and the remaining disposal time of the pilot can be displayed in real time. The vertical water depth transducer 1 can be used alone or in combination with the bow direction transducer 2, the port side transducer 3 and the starboard side transducer 4 according to the requirements of the navigation sea area of the ship. - The invention is applicable to ships of various uses and tonnages, including military ships and civil ships.

A dual-hull ship used as sea ship, floating dock, or sea airport is composed of upper and lower hulls, truss for linking two hulls together, floating box positioned in underwater part of truss of carrying ship equipment, keel at bottom of truss, and claws set up around under water part of truss and on keel. Its advantage is high stability and reduced rocking of ship body due to wave.