51results about "Marine torpedoes" patented technology

Projectile launch apparatus (20) for use in a fluid environment. The apparatus (20) comprises a launch tube (21) having a supercavitating projectile (24) with cavitator (29) received within the launch tube (21). A means for generating expulsion gas (not visible) is arranged to provide expulsion gas to propel the projectile (24) from the launch tube (21), with means for bleeding expulsion gas (31, 32) being provided to bleed a portion of expulsion gas around the projectile (24). This allows expulsion gases to contribute to the formation of the gas cavity around the supercavitating projectile (24) as the projectile (24) is launched from the launch tube (21). Particularly suited to the deployment of supercavitating projectiles underwater, such as in underwater mine disposal applications.

A variable diameter conical nose is provided. The conical nose includes a cone formed from a circular sheet of ductile material having a sector removed. The formed cone has a first overlapping portion and a second overlapping portion overlying the first overlapping portion. The first overlapping portion is fixed and the second overlapping portion is free to move. The conical nose includes an actuator capable of varying the diameter of the cone by moving the second overlapping portion relative to the first overlapping portion.

A tandem charge for prosecution of underwater targets includes both a precursor charge (PC) and a follow through charge (FTC) oriented within and along an axis of a charge casing with the FTC positioned in front of the precursor charge. The precursor charge includes an explosive charge and a liner configured such that upon detonation of the explosive charge the liner forms an annular explosively formed penetrator (EFP) that is projected along the axis and passes around the FTC to cut a first hole in an outer surface of the target. The FTC is configured to be carried through the first hole in the outer surface of the target by the flow of water therethrough for detonation on the other side of the outer surface of the target, perhaps forming a second hole in an inner surface of the target.

The invention discloses a modular foldable grid rudder device driven by a single driving link and applied to attitude adjustment of a cylindrical launching navigation body, and relates to the technical field of underwater launching navigation bodies. The problems that an existing grid rudder structure is complex in control, the reliability of the variant process is poor, a traditional mechanism is prone to damaging the power appearance, and the existing grid rudder structure cannot be applied to a cylindrical navigation body are solved. Base assembly spaces vertically communicated with an inner cavity of a mounting base are arranged on the lower portions of grid rudder storage spaces, each grid rudder storage space is provided with a grid rudder folding module, grid rudders of the grid rudder folding modules are matched with the grid rudder storage spaces in shape, and folding and unfolding and variable attack angle driving mechanisms are embedded in the base assembly spaces. The folding, unfolding and variable attack angle driving mechanism is movably connected with the grid rudder so as to achieve the functions of folding, unfolding and variable attack angle of the grid rudder. The grid rudder follows the modular design principle and can serve as a middle section module to be mechanically and electrically connected with a navigation body to bear the action execution function.

The application discloses a recovery control device for sinking mine training recovery, which comprises an ignition driving module, a depth sensor and a control module; the output port of the ignition driving module comprises a first ignition head, a second ignition head, a third ignition head and a fourth ignition head; the first ignition head and the second ignition head are connected in parallel, and the third ignition head and the fourth ignition head are connected in parallel; when the device adopts the mode of using a pyrotechnic product to open an air inlet valve to realize airbag inflation, the first ignition head and the third ignition head are connected to the same group of controls, and the second ignition head and the fourth ignition head are connected to the same group of controls; when the device controls airbag inflation by controlling the opening and closing of a solenoid valve, the first ignition head and the second ignition head are connected to the same group of controls, and the third ignition head and the fourth ignition head are connected to the same group of controls; the application can realize precise control of sinking mine floating recovery in sinking mine training, and improve the reliability of the control structure.

According to the guidance device and method based on magnetic detection, magnetic field information on the two sides of a projectile body is synchronously collected and magnetic field gradients on the two sides of the projectile body are obtained by utilizing the rule that a target magnetic gradient is larger than a surrounding environment magnetic gradient, and then the magnetic field gradient difference between the two sides of the projectile body is obtained, so that guidance information is generated, and the motion direction of the projectile body is controlled. For an ultra-high-speed torpedo or other missiles under limited conditions, the traditional guidance technology is limited, the device and the method solve the problem by introducing magnetic guidance, and the hit probability and the striking effect of weapons such as the torpedo and the missiles are improved.

The utility model relates to the field of initiating explosive devices, and discloses an underwater pin pulling device which comprises a shell, a fixing pin, a piston, a lock cover, a buffering sleeve, first sealing rings, an exploder and a one-way sealing assembly, the cross section of the piston is arranged in a shape like a Chinese character'zhong 'and is connected in an inner cavity of the shell in a sliding mode, and the peripheral side of the piston is sleeved with the first sealing rings; the working end of the fixing pin is connected with the piston in an inserted mode, two air guide channels are reserved in the piston, the exploder is in threaded connection to the bottoms of the air guide channels, the one-way sealing assembly is in threaded connection to the tops of the air guide channels, the small-diameter end of the bottom of the piston is sleeved with the buffering sleeve, and the outer wall of the buffering sleeve is arranged in a taper angle mode. The lock cover is in threaded connection with the opening end of the bottom of the shell, a circular-truncated-cone-shaped groove is formed in the lock cover, and the large-diameter size of the circular-truncated-cone-shaped groove is matched with the small-diameter size of the buffering sleeve. The waterproof performance of the device is effectively improved, and meanwhile, the stable operation of the device is ensured by adopting the arrangement of the double exploders.

A watercraft may have a shaped charge and a gas reservoir. The gas reservoir may be adjacent to the shaped charge in a direction of action of the shaped charge. The gas reservoir can be varied in length in the direction of action of the shaped charge. Further, the shaped charge may be movable parallel to the direction of action of the shaped charge. A threaded rod can be used to move the shaped charge. In some cases a length of the gas reservoir is variable between 0.1-times and 10.0 times a diameter of the shaped charge. The watercraft may be configured in some instances as an unmanned underwater vehicle.

Disclosed is a hybrid electric torpedo comprising: a combustion chamber (130) defining an aperture; and an igniter (138) having a resistance, a current source, and a contactor. The igniter includes a housing having terminals configured to receive electrical conductors, and a unitary ignition element (134) having ends conductively joined with the terminals and having an ignition element material composition, the igniter including an Inconel hermetic coating that encapsulates the unitary ignition element and including an Inconel hermetic seal formed to join the aperture.

The invention relates to the technical field of steering engines, in particular to a linear steering engine suitable for a torpedo, which comprises a motor, a front shell, a rear shell and a lead screw shaft, the motor is mounted on the front shell; the front shell and the rear shell are in butt joint with each other; a nut is screwed on the lead screw shaft, and a main straight gear is fixedly sleeved outside the nut; the two ends of the nut are installed on the front shell and the rear shell through angular contact bearings respectively. A planetary transmission assembly is arranged in a cavity jointly formed by the front shell and the rear shell, and the motor is in transmission with the main straight gear through the planetary transmission assembly. An auxiliary straight gear is arranged in an inner cavity jointly formed by the front shell and the rear shell, and the auxiliary straight gear is meshed with the main straight gear; a gear shaft is integrally formed in the center of the auxiliary straight gear; a hexagonal counter bore is formed in the left end face of the gear shaft, the left half section of the gear shaft is installed on the front shell, and the left end face of the gear shaft is in an exposed state. The linear steering engine can achieve the purpose of manually adjusting the axial position of the lead screw shaft.

The invention discloses a high-strength and high-toughness aluminum alloy conical pipe fitting and a preparation method and application thereof, and belongs to the technical field of aluminum alloy deformation machining.The high-strength and high-toughness aluminum alloy conical pipe fitting is prepared by sequentially conducting two-stage homogenization treatment on an aluminum alloy cast ingot to obtain a homogenized cast ingot, conducting extrusion treatment on the homogenized cast ingot to obtain an aluminum alloy bar, and conducting reverse extrusion forging on the aluminum alloy bar to obtain the high-strength and high-toughness aluminum alloy conical pipe fitting. The high-strength and high-toughness aluminum alloy inclined-wall conical forge piece is successfully prepared by adopting a composite forming process of casting rod extrusion cogging, slitting, reverse extrusion die forging and heat treatment, and the high-strength and high-toughness aluminum alloy inclined-wall conical forge piece is excellent in comprehensive mechanical property and suitable for manufacturing torpedo shells; and the existing machining and welding process by using bars or plates is replaced, so that the utilization rate of materials is greatly improved.

A monolithic attitude control motor frame includes a monolithic structure including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. Adjacent cavities of the plurality of cavities share a side wall or side wall portion therebetween. Each of the cavities is configured to receive an attitude control motor. A monolithic attitude control motor system includes a monolithic frame including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. The system further includes a plurality of attitude control motors corresponding to the plurality of cavities, such that an attitude control motor of the plurality of attitude control motors is disposed in each cavity of the plurality of cavities.

To provide an underwater mine to defend a ship against a torpedo.SOLUTION: The invention provides an underwater mine with a net that clings to a torpedo and explodes. The underwater mine is attached and fixed to the net, and the net is opened underwater.SELECTED DRAWING: Figure 1

The present invention relates to a watercraft (10) having a hollow charge (20) and a gas chamber which is adjacent to the hollow charge (20) in the direction of action of the hollow charge (20), characterized in that the gas chamber is variable over the length in the direction of action of the hollow charge (20).

Disclosed is a kit (100) of parts configured to form an effector. The kit comprises a modular kinetic / non-kinetic effect component (102) that is connectable to at least one further modular component (104) to configure the effector for use in one of a plurality of different use cases. Also disclosed are a modular effector system and a method of forming an effector.

Provides mines to protect ships from torpedoes. [Solution] The mine has a net and explodes after entangling with a torpedo, the mine being attached and fixed to the net, and the net being characterized by opening under the water surface.

Torpedo (1), wherein an explosive warhead (6) comprises three explosive components: a detonator (10) which receives an activation command; a booster explosive (11) which is detonated by the detonator (10); and a main explosive (12) which explodes following the explosion of the booster (11). The three explosive components (10, 11 and 12) are alternately available in a safety position in which any accidental detonation of the detonator (10) cannot operate the explosion of the main explosive (12) and in an arming position. An electronic control unit (8) or a circuit compares the current absorbed by the motor with a first lower current threshold Imot-low and a second higher current threshold Imot-high so as to carry out the following safety control operations of the warhead (6) if the intensity Imot of the measured current is lower than the first current threshold Imot-low or higher than the second current threshold, the generation and / or transmission of the activation command to the detonator (10) or the arrangement of the three components in the arming position is inhibited.

Provides mines to protect ships from torpedoes. [Solution] The mine has a net and explodes after entangling with a torpedo, the mine being attached and fixed to the net, and the net being characterized by opening under the water surface.

A nosepiece is provided with a recess or cup shape with internal dimensions that provides cavity suppression of a body entering an air and water interface. The nosepiece includes a circular portion with a diameter connectable to a nose of the body. The circular portion has a cylindrical first section and a cylindrical second section with the recess as the formed cup in the first section at a depth where the diameter and depth are selected based on a Weber number for the body such that a cavity is suppressed as the nosepiece and the body enter the air and water interface.

The present disclosure relates to a nose arrangement (100) for an underwater vehicle (10). The nose arrangement comprises a first separation section (110) comprising a first inflatable structure (113) and a second inflatable structure (114) arranged within the first inflatable structure (113). The first separation section (110) is arranged store the first inflatable structure (113) and the second inflatable structure (114) in a first state, and to inflate the first inflatable structure (113) and the second inflatable structure (114) in a second state. The first inflatable structure (113) is arranged to protrude along the longitudinal axis of the nose arrangement and underwater vehicle in the second state. The disclosure also relates to a method for deploying a nose arrangement (100) of an underwater vehicle.

This invention belongs to the field of ammunition, specifically relating to a cross-medium reconnaissance and strike integrated "Flying Fish" biomimetic munition. The biomimetic munition is generally flat and spindle-shaped, including an aerodynamic body and a head shell weakly connected to the aerodynamic body. The head shell contains a composite damage warhead, and the aerodynamic body contains the ejector charge for the composite damage warhead. Retractable main wings and ailerons are symmetrically arranged on both sides of the aerodynamic body from front to back, and a tail fin is located at the rear of the aerodynamic body. The composite damage warhead forms an EFP penetrating jet and fragmentation damage units. This invention mounts a shaped charge composite damage warhead on a biomimetic munition, enabling both target penetration and large-scale damage to personnel and equipment. The penetration utilizes explosively formed projectiles, which have strong penetration capabilities and good effects. For damage, the coverage area of ​​EFP is limited; to increase the kill radius, a fragmentation component is added to the warhead.

To output gyro data satisfying a detection range and accuracy according to a change in a state of an airframe device.SOLUTION: The inertial device 100 includes a first inertial measurement unit 110 that generates first gyro data, a second inertial measurement unit 120 that generates second gyro data by a method different from that of the first inertial measurement unit, and an arithmetic unit 101 that compares the first gyro data and the second gyro data or refers to data other than the first gyro data and the second gyro data, selects one of the first gyro data and the second gyro data as selected gyro data, and supplies the selected gyro data to the body device 1.SELECTED DRAWING: Figure 1

To provide an underwater mine to defend a ship against a torpedo.SOLUTION: The invention provides an underwater mine with a net that clings to a torpedo and explodes. The underwater mine is attached and fixed to the net, and the net is opened underwater.SELECTED DRAWING: Figure 1

The invention provides a multi-stage elastic load reduction head cap and method applied to underwater entry of a navigation body, the load reduction head cap comprises a first-stage warhead, a first-stage load reduction mechanism, a second-stage load reduction mechanism and a main body structure, the first-stage load reduction mechanism comprises a first shell, a thin spring and a locking device, and the second-stage load reduction mechanism comprises a second shell, a thick spring and a damper; the outer edge of the tail end of the first-stage warhead is connected with one side of the first shell, and the other side of the first shell sleeves one side of the outer wall of the second shell and can slide along the outer wall of the second shell; the other side of the second shell is connected with the main body structure; one end of the fine spring is connected with the middle part of the tail end of the first-stage warhead; the two ends of the locking device are connected with the first-stage warhead and the second-stage connecting body The second-stage connecting body is slidably connected to the inner wall of the second shell and connected with one side of the damper. One end of the thick spring is connected with the other side of the damper, and the other end is connected with the main structure. According to the method, two-stage collaborative reduction of the water entry impact load can be achieved, and the energy dissipation efficiency is improved while the structural integrity is guaranteed.

The invention discloses an underwater vehicle resonance type icebreaking device which comprises an icebreaking bomb, an impact mechanism and an adjusting mechanism, one end of a cylinder is connected with one end of a shell, a first driving part is arranged at the other end of the shell, an output shaft of the first driving part is connected with a propeller, and the first driving part is used for driving the propeller to rotate; the impacting mechanism comprises a shaft body and a second driving piece, the shaft body is arranged in the cylinder in a sliding and penetrating mode, the second driving piece is arranged in the shell, an output shaft of the second driving piece is connected with one end of the shaft body, and the second driving piece is used for driving the shaft body to slide so as to impact the cylinder; the adjusting mechanism comprises an acceleration sensor and a controller, the acceleration sensor is fixedly connected with the cylinder, the controller is fixedly arranged in the shell, and the acceleration sensor and the second driving piece are electrically connected with the controller. The problems that submarine ice breaking mainly depends on the structural strength and a power system of a submarine, ice breaking is achieved by directly impacting an ice layer, efficiency is low, and energy consumption is high are solved.

According to an aspect of the invention, there is provided a system for reducing water-entry shock for a projectile entering the water, the system comprising: a first component, the first component being moveable to a target region for which water-entry shock is to be reduced, and arranged to interact with the water, for reducing water-entry shock for a second component; a second component in the form of the projectile, arranged to enter the water in the region for which water-entry shock has been reduced by the first component, functionality of the second projectile component being triggered by the water.

To provide an underwater mine to defend a ship against a torpedo.SOLUTION: The invention provides an underwater mine with a net that clings to a torpedo and explodes. The underwater mine is attached and fixed to the net, and the net is opened underwater.SELECTED DRAWING: Figure 1

A tandem charge for prosecution of underwater targets includes both a precursor charge (PC) and a follow through charge (FTC) oriented within and along an axis of a charge casing with the FTC positioned in front of the precursor charge. The precursor charge includes an explosive charge and a liner configured such that upon detonation of the explosive charge the liner forms an annular explosively formed penetrator (EFP) that is projected along the axis and passes around the FTC to cut a first hole in an outer surface of the target. The FTC is configured to be carried through the first hole in the outer surface of the target by the flow of water therethrough for detonation on the other side of the outer surface of the target, perhaps forming a second hole in an inner surface of the target.

A torpedo with a novel structure is designed, a solid fuel or liquid fuel rocket engine is adopted as a power system, high-temperature and high-pressure gas is led out from a nozzle at the tail of a projectile body and led into the front portion of the projectile body through a high-temperature and high-pressure gas cooling pipeline, and the projectile body is long; and the high-temperature and high-pressure gas cooling pipeline also has enough length for cooling the high-temperature and high-pressure gas. And the cooled high-pressure gas is supplied to the high-pressure gas pipeline after being filtered by the air filter, and then is supplied to the high-pressure gas injection module through the high-pressure gas pipeline. The high-pressure gas injection module is composed of a large number of flat capillary nozzles, high-speed gas flow is injected to the rear portion of the projectile body, a thin high-speed backward flowing gas film is formed on the surface of the projectile body, and the resistance borne by the projectile body during advancing can be greatly reduced through the gas film. The high-pressure gas injection module is formed by combining a plurality of modules, is similar to wall bricks, is connected through butt-joint ports and is adhered to the surface of the projectile body. A gas film is generated on the surface of the torpedo through self gas, the self gas can be generated along with work of the engine, additional starting auxiliary equipment is not needed, the structure is simple, and the starting speed is high. Gas sprayed backwards at a high speed generates a gas film, the resistance of seawater is effectively reduced due to the existence of the gas film, and high-speed sailing can be achieved. And the existence of an air film is not influenced during turning, the form change of the air film is small, and high-speed maneuvering turning can be realized under the assistance of the steering nozzle.