58 results about "Pressure hull" patented technology

An air bag launch assembly is disclosed which allows for modular loading onto a submarine, the launch of weapons or vehicles external to the submarine pressure hull, while also achieving greater packing density. The air bag launch assembly includes a large, watertight pressure container; one or more smaller, watertight canisters used to contain the weapon or vehicle. The canisters are sized to fit within the larger pressure container. An air bag inflator is attached to the top and/or sides of the small canister to buoy the canister out of the container.

The invention discloses an in-built middle through-hole dynamic throttling element flow meter, belonging to the technical field of automatic detection of a throttling flow meter. The flow meter is characterized in that an in-built middle through-hole dynamic throttling element is adopted; the internal and external pressures of the dynamic throttling element are balanced; the measured fluid pressure is born by a flow meter pressure hull, thus, a thin wall thick dynamic throttling element can be used; the main boy of an anti-blocking mechanism is a flexible filter medium or a filter membrane with a simple structure; compared with the used pore plates of a differential pressure flow meter, the flow meter provided by the invention mainly uses a dynamic venturi tube; the venturi tube has the advantages of small flowing resistance loss, long service life, high precision, and the tube is hard to block and the like. The flow meter provided by the invention is simple in structure, easiness in manufacturing, high in performance cost ratio, less in energy consumption for measurement, thus, the flow meter can be used for measuring the flow of small pipe diameter and dirty fluid, and has a development prospect for replacing differential pressure flow meters and partial small pipe diameter ultrasonic flow meters.

A self-balanced pressure hull device, belonging to the field of pressure structure technology of deep-sea submersibles, being assembled by nesting, from inside to outside, a spherical inner housing, a spherical intermediate housing and a spherical outer housing around the sphere centre, pairs of symmetric coaxial connecting shaft components being connected between the spherical inner housing and the spherical intermediate housing and between the spherical intermediate housing and the spherical outer housing, respectively; axes of the two pairs of connecting shaft components are perpendicular to each other so as to enable the spherical inner housing and the spherical intermediate housing to rotate relative to each other, and the spherical intermediate housing and the spherical outer housing to rotate relative to each other; and each of the connecting shaft components in the two pairs being provided with a spring damper for resisting the axial impact between each two adjacent housings.

A spacecraft is disclosed. The spacecraft (10) includes a pressure hull (12) for containing a gas (13). The spacecraft further includes a propulsion system (18) coupled to the pressure hull so as to be disposed within the pressure hull, the propulsion system operable to generate a propulsion force for propelling the spacecraft through space.

A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies-simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.

The present invention discloses a system for wireless communications and/or data transfer through a sea-vessel hull by means of electric and/or magnetic coupling between first and second transducers located on opposing sides of the hull. Transmit and receive transducers located on opposing sides of the hull are clamped around cables which penetrate the hull and which are fed through pressure hull glands in the hull. The inductive transducers couple electric and/or magnetic signals through the sea vessel hull via paths through the pressure hull glands or via paths through the cables. The system for wireless communication and/or data transfer of the present invention is capable of operation through an electrically conductive sea vessel hull which would ordinarily present a physical barrier against the transmission of such signals. The system can be deployed on an ad ad-hoc basis and is capable of providing high data rate and high bandwidth communications and/or data transfer through the sea vessel hull. The system does not interfere with existing cabled systems penetrating the hull via the pressure hull glands. In particular, the system of the present invention requires no modification of existing hardware nor does it require any modification of the hull for operation.

The invention belongs to the technical field of cleaning of marine biofouling and particularly relates to a cavitation cleaning device. A cavitation cleaning device for clearing biofouling on surfaces of marine ships and platforms comprises a water inlet adapter (5), a cavitation cleaning spray gun (6), a head cover (7), a stabilizing disc (8), a control unit (9), a pressure hull (10), a power unit (11), a depth sensor (12), a tail cover (13), a lifting oil bag (14), a two-way hydraulic pump (15), an oil storage barrel (16) and a battery pack (17). The cavitation cleaning device provided by the invention can be used for cleaning for a long time underwater without needing underwater manual operation, and the cleaning process of the cavitation cleaning device is finished by an operator on a deck through complete remote control of a control center according to a signal fed back by an underwater camcorder unit. Because underwater manual operation is avoided, underwater potential safety hazards of workers are eliminated; and diving suits and underwater acoustic communication equipment are not used, thereby greatly reducing the system cost.

With an unmanned underwater vessel having a pressure hull, drive assembly and at least one ancillary device arranged on the pressure hull, for example a propeller protection apparatus (15), the at least one ancillary device (15) is fixedly connected to a lifting body (16), which has a lower density than the density of the water, in order to make it possible to replace the ancillary devices or to arrange additional ancillary devices on the pressure hull without changing the trim of the underwater vessel as a result. The density and volume of the lifting body (16) are selected such that the lifting force acting in the water on the ancillary device (15) and the lifting body (16) compensates for the force of gravity acting on the ancillary device (15) and the lifting body (16).

A modular watercraft capable of both surface and submersible accommodation and transport of passengers. In one embodiment of the submersible watercraft of this invention, the hull comprises air bladders, thereby avoiding the engineering complexity, weight and cost of constructing a pressure hull.

A submarine vehicle may include a storage area for storing loads. The submarine vehicle may further include a pressure hull. The submarine vehicle is configured to pick loads up from a seabed and/or set loads down on the seabed. The storage area may be positioned outside the pressure hull and, in some examples, between numerous pressure hulls. Further, the storage area may include a lower hatch disposed on an underside of the pressure hull or an upper hatch disposed on a top side of the pressure hull. Some submarine vehicles may include a load transporting system for picking the load up from the seabed, setting the load down on the seabed, and/or conveying the load within the storage area.

A multiple stage buoyancy changing system, or variable buoyancy device, for an underwater vehicle. The multiple stage buoyancy changing system comprises: a pressure hull containing a flexibly-sized internal fluid reservoir; a flexibly-sized external fluid reservoir attached to the pressure hull and connected to the internal reservoir; a system of devices and channels configured to move fluid between the internal fluid reservoir and the external fluid reservoir to change a displaced volume of the vehicle. Each stage of the variable buoyancy device can be optimized for maximum energy efficiency while changing the vehicle's displaced volume within an ambient pressure range. A control system for the variable buoyancy device engages different stages depending on ambient external pressure such that maximum energy efficiency is achieved over a large range of pressures/depths.

The invention provides a Beidou/GPS multi-frequency-point antenna for a deep sea intelligent buoy. The Beidou/GPS multi-frequency-point antenna for a deep sea intelligent buoy includes a multi-frequency-point Beidou/GPS antenna, an antenna feed line and a pressure hull, wherein the pressure hull comprises a threading pipe, a flange and a radome; the radome is located at the top of the pressure hull and is sealedly connected to one side of the flange; the multi-frequency-point Beidou/GPS antenna is arranged in the radome; the threading pipe is sealedly connected to the other side of the flange;and the antenna feed line penetrates the threading pipe to connect the multi-frequency-point Beidou/GPS antenna and a Beidou module in a buoy compartment. The Beidou/GPS multi-frequency-point antennafor a deep sea intelligent buoy can ensure that the intelligent buoy can work in an underwater environment with a water depth of 4000 meters, and the Beidou/GPS multi-frequency-point antenna can effectively transmit or receive electromagnetic wave signals of four frequency bands of a Beidou first generation S/L, a Beidou second generation B1 and a GPS L1 after the deep sea intelligent buoy floatson the water surface, and can provide guarantee for deep sea intelligent buoy satellite positioning and implementation of a communication function.

The invention belongs to the field of submarine hull structure design, and relates to a submarine non-pressure hull pyramid lattice sandwich anti-impact structure and a design method thereof. The invention provides a structure and a design method for applying a pyramid lattice sandwich anti-impact structure to a weak area of a non-pressure shell. The method improves the anti-knock performance of the non-pressure shell by replacing a conventional non-pressure shell with a pyramid lattice sandwich shell plate structure without reducing the structural performance of the original non-pressure shell.

A variable buoyancy buoy and method for deployment therefor can include a fixed buoyancy portion formed with a cavity and an enclosure. A pressure hull containing instrumentation can be place in the cavity, and a variable buoyancy portion that can be inserted into the enclosure. The fixed buoyancy portion can have a spar buoy configuration or a marker buoy configuration, and can further be formed with at least one opening to establish a path of fluid communication between the exterior of the buoy and the enclosure. The variable buoyancy portion can be a compressible bladder, or compressible foam, which can change form a maximum volume at the water surface to a minimum volume as the buoy descends towards stowage depth. The decrease in buoyancy facilitates retrieval of the buoy by an apparatus on the ocean floor.