54 results about "Surface craft" patented technology

A submersible vessel comprising:an elongated hull;at least one propeller mounted on a forward end of said hull and adapted to move said hull through water;said at least one propeller being of a size and configuration such that when it is rotated at an appropriate speed, it generates supercavitated water flowing from said at least one propeller and then along an outer surface of said hull so as to diminish friction on the outer surface of said hull and facilitate high underwater speeds.

A towed array deployment system is provided that uses the flow of fluid through the interior of a tube to deploy a towed line array. The system includes a small surface water craft such as an unmanned surface vehicle having a length between seven and eleven meters and a U-shaped tube mounted to the outside of the hull of the watercraft below the waterline. A towed array is fed from a winch aboard the surface craft, through one end of the tube, and the fluid is introduced through into the interior of the tube to force the towed array for deployment through the tube and out a second end of the tube near the stern of the watercraft.

A marine vessel comprising:at least one buoyant tubular foil; andat least one baffle plate positioned about the perimeter of the at least one buoyant tubular foil so as to protrude into the flow of water passing by the perimeter of the at least one buoyant tubular foil, whereby to create a high-pressure zone fore of the at least one baffle plate and a low-pressure zone immediately aft of the at least one baffle plate, whereby to create a dense stream of supercavitated water immediately aft of the at least one baffle plate.

A marine vessel comprising:at least one buoyant tubular foil; andat least one baffle plate positioned about the perimeter of the at least one buoyant tubular foil so as to protrude into the flow of water passing by the perimeter of the at least one buoyant tubular foil, whereby to create a high-pressure zone fore of the at least one baffle plate and a low-pressure zone immediately aft of the at least one baffle plate, whereby to create a dense stream of supercavitated water immediately aft of the at least one baffle plate.

A marine vessel comprising:at least one buoyant tubular foil;at least one venturi injection ring positioned adjacent to the perimeter of the at least one buoyant tubular foil so as to create a passageway between the at least one venturi injection ring and the perimeter of the at least one buoyant tubular foil, wherein the passageway is characterized by a fore opening, an aft opening, and an intermediate opening disposed between the fore opening and the aft opening, and wherein the intermediate opening is smaller than the fore opening and the aft opening;at least one fluid opening formed in the perimeter of the at least one buoyant tubular foil adjacent to at least one of the intermediate opening and the aft opening; andat least one passageway connecting the at least one fluid opening to a source of fluid.

A water craft comprising:an elongated hull comprising a passageway having an inlet and an outlet;a pump jet disposed within said passageway intermediate said inlet and said outlet;said pump jet being configured to receive water entering said passageway through said inlet and pump said water out of said outlet, whereby to propel said hull through water;a plurality of nozzles disposed on the outer surface of said hull, aft of said inlet, wherein said plurality of nozzles are configured to release a friction-reducing fluid, whereby the friction-reducing fluid displaces water from the surface of said hull so as to diminish friction on the outer surface of said hull and facilitate high speeds.

The invention discloses coated craft paper and a production method thereof. The coated craft paper comprises a core paper layer; the upper side of the core paper layer is a surface paper layer, and the lower side is a bottom paper layer; a coating layer is arranged on the upper surface of the surface paper layer; the bottom paper layer and the core paper layer are prepared by the steps of: dosing the waste paper, preparing waste paper pulp to obtain non-deinked waste paper pulp, and manufacturing paper through a paper layer to obtain a wet bottom paper layer and a wet core paper layer; the surface paper layer is prepared by the steps of: manufacturing paper through a paper layer by taking the UKP pulp, the non-deinked waste paper pulp or the mixture of the UKP pulp and the non-deinked waste paper pulp as the pulp to obtain a wet surface paper layer; and the wet bottom paper layer, the wet core paper layer and the wet surface paper layer are subjected to the steps of compounding with the coated body paper, preliminary drying, sizing, later drying, paper surface calendering, paper surface coating and after-treatment to obtain the coated craft paper. The available waste paper types are increased, and the fiber source is wider; and meanwhile, the quality of the waste paper pulp is effectively stabilized so as to guarantee the quality stability of the coated body paper and the white-surface craft paper and avoid easy layering, splitting and scaling.

The invention discloses an automatic control system for surface process treatment, which is applicable to precise fragile articles. The automatic control system combines the procedure of cleaning or coating the articles and the procedure of heat treatment, comprises a control assembly of an anti-collision structure part box of a precise fragile article, a coating bucket control assembly and a heat treatment assembly, combines sensor signals by a control unit, and controls the running of various module motors according to specific needs so as to achieve matching of corresponding procedures. Inthe automatic control system, automatic treatment of the technological process is realized by utilizing a simple structure, the automatic control system is convenient to operate, the damage rate to the articles in the technological process is reduced, and meanwhile, the whole structure of the equipment is in an acid-proof and isolating design, so that the service life of the system is further prolonged.

The invention provides an electronic chart-based global path planning method for optimal energy consumption of unmanned ship ant colonies. 1. After processing the electronic chart and converting it into a processable file form, determine the feasible area and obstacle area of ​​the map, and use the visualization method to find out the set of feasible paths between the starting point, target point and obstacle vertices to ensure These routes do not pass through unfeasible areas to ensure the safety of navigation of unmanned surface vehicles. 2. Establish a mathematical model of motion, and establish a motion model of the unmanned ship, so as to realize the grasp of the propulsion and motion characteristics of the unmanned ship. 3. Unmanned boat data acquisition, when the unmanned boat sails on the water surface, it obtains information such as the course, hull position, and vertical acceleration of the ship; 4. Uses the ant colony algorithm to search for a track that meets the requirements. 5. Establish the energy consumption model of the unmanned surface vehicle under the interference of ocean currents, and improve the ant colony algorithm on the premise of optimal energy consumption to obtain the path that meets the safe navigation conditions and consumes the least energy.