36results about How to "Improve sailing performance" patented technology

In a sailing catamaran provided with a forwardly directed pivoted arm carrying at the free end a third pontoon into alignment in front of either of the catamaran hulls a triangular truss assembly is provided bridging across the hulls. The apex of the truss assembly is then engaged to a point along the length of a mast which has its foot or base resting on the arm. A forestay stretched between the mast and the end of the arm supports a headsail while a mainsail is mounted on the mast.

The invention discloses a tank stabilizer control device, which mainly solves the technical problems of improving the pitch damping effects of ships and the like, and adopts the technical scheme that: a left throttling passage and a right throttling passage are arranged at the top parts of a larboard air chamber and a starboard air chamber of a U-shaped tank stabilizer, throttling components are arranged on the two passages, the two components are connected with a controller which is connected with a detector, detected ship swinging period signals are input to the controller, control signals are output to the two throttling components according to set rules, and the throttling components adjust effective sectional areas of the two throttling passages so as to realize the water level alternation period of the U-shaped tank stabilizer the same as the ship swinging period. The tank stabilizer control device is applied to various U-shaped tank stabilizers.

The invention discloses an air, water and underwater triphibious unmanned aerial vehicle. Through a rotatable wing and retractable ducted engines on the two sides of an unmanned aerial vehicle body, thee working modes of air flying mode, a water surface sailing mode and an underwater submerging mode are realized. In the flying mode, the wing is perpendicular to the unmanned aerial vehicle body andis locked, the unmanned aerial vehicle is as same as a three-wing-surface aircraft, a canard and horizontal tail and a control surface thereof provide longitudinal stability and operating moment forthe unmanned aerial vehicle; in the sailing mode, the wing and the unmanned aerial vehicle body are integrated to form a streamline-shaped flat spindle shape, and the canard and the horizontal tail are in contact with a water medium as hydrofoils to generate a hydrodynamic lift so that the sailing performance is improved; and in the submerging mode, the wing and the unmanned aerial vehicle body are integrated to form a streamline-shaped flat spindle shape, the ducted engines on the two sides of the unmanned aerial vehicle body are folded into the unmanned aerial vehicle body, and a tail propeller provides powder so that the unmanned aerial vehicle realizes submerging. By using a tail fin, hydrofoil and water rudder integrated design, the air, water and underwater triphibious unmanned aerial vehicle has the advantages that the structure of the unmanned aerial vehicle is optimized, the integration degree of the system is enhanced, and the structural weight and resistance of the unmannedaerial vehicle are reduced.

This aims to provide a liquefied-gas carrying vessel capable of reducing the width of a hull and reducing a hull resistance and a hull weight, thereby to improve a navigation performance. The liquefied-gas carrying vessel (1) comprises a plurality of spherical tanks (2) stored therein with a liquefied gas, arranged along a bow-stern direction and fixed in a hull (5) through a skirt, and one continuous tank cover (7) covering the upper halves of the spherical tanks (2) and extending along the bow-stern direction and the beam direction. The tank cover (7) is constituted such that it is rigidly jointed to the hull (5), thereby to retain the longitudinal strength integrally with the hull (5).

Vessel including a hull of a substantially closed surface has at deck level a lifting crane, ballast tanks within the hull and a ballast control unit for admitting water to the ballast tanks for changing the draft of the vessel. The hull has a narrow lower section having first width over a height from keel level to a widening level, and a top section having a larger width than the lower section, extending from the widening level upwards towards deck level. The control unit is adapted to ballast the vessel to have a relatively shallow draft level in a transit mode, so that the wide top section is above water level, while the vessel is traveling, and to ballast the vessel to a relatively deep draft level in a lifting mode so that the widening level is below water level, at least when the vessel is substantially stationary and the crane is in its lifting position.

The invention discloses a green energy, small waterplane and improved catamaran unmanned boat for marine environmental monitoring. The unmanned boat includes a superstructure, a small waterplane improved double-sheet body main boat body, a boat body monitoring and motion intelligent control system, a navigation planning and decision-making system, and an environmental monitoring system. The unmanned boat adopts a small waterplane catamaran as a carrier, optimal calculation is performed in boat type parameters of the small waterplane catamaran by comprehensive optimization software, a scheme with best navigation performance for a main function of marine meteorological monitoring is obtained, wave-making and interference resistance between sheet bodies are effectively reduced, through combination of the advantages of small wave-making resistance, large deck area, good wave resistance, small navigation resistance and good stability of the small waterplane catamaran itself, a stable working environment can be provided for various monitoring equipment, and its better navigation performance can meet working requirements of the unmanned boat in offshore and distant sea water areas.

The invention discloses a water jet propulsion wheel type amphibious unmanned ship which is characterized by comprising a ship body, a battery pack, a water jet propulsion device and a wheel type walking device. The battery pack, the water jet propulsion device and the wheel type walking device are arranged on the ship body; the wheel type walking device comprises a drive unit, at least one frontwheel drive unit, a pair of back wheel drive units, at least one tire steering unit and a tire reeling unit; the front wheel drive unit and the back wheel drive units are rotatably arranged on corresponding positions of the front side and the back side of the ship body; a tire is rotatably arranged on the front wheel drive unit through the tire steering unit; a tire is rotatably arranged on each back wheel drive unit; an output shaft of the drive unit is connected with input shafts of the front wheel drive unit and the back wheel drive units; output shafts of the front wheel drive unit and theback wheel drive units are connected with axles of the tires; and the tire reeling unit drives the front wheel drive unit and the back wheel drive units to rotate around rotation axes of the tire drive units. The water jet propulsion wheel type amphibious unmanned ship provided by the invention has a favorable shallow water through capacity aiming at the shallow water environment.

The invention discloses a three-channel water surface composite yacht which comprises a main yacht body. Side bodies are arranged on the two sides of the bottom of the main yacht body respectively. Two middle yacht bodies are arranged between the two side bodies. Three channels are formed between the two side bodies and the two middle yacht bodies. Hydrofoil systems are arranged at the front ends or the rear ends of the three channels. Each hydrofoil system comprises a hydrofoil, a rotating rod and a control device, wherein the rotating rod penetrates through the hydrofoil, the rotating rod drives the hydrofoil to rotate, the control device is installed on the corresponding middle yacht body and connected with the hydrofoil through the rotating rod, and the hydrofoil is driven by the control device to rotate. According to the three-channel water surface composite yacht, through the combination of the good layout characteristic, good resistance performance and high shipping-direction stability of a three-channel skimming yacht and the rapidness and good comprehensive navigation performance of a hydrofoil yacht with controllable hydrofoils, the inherent defects of the three-channel skimming yacht and the hydrofoil yacht are well overcome.

The invention provides a retractable apron structure of an amphibious aircraft. The retractable apron structure comprises an apron structure and a capsule body retracting device. The apron structure comprises an arc-shaped rigid surface and a capsule body, wherein one end of the arc-shaped rigid surface is hinged to a hull, the other end of the arc-shaped rigid surface is hinged to the capsule body, the capsule body is further hinged to the bottom of the hull, and an exhaust hole channel is arranged at the joint between the capsule body and an air chamber. The capsule body retracting device comprises a connecting rope, a miniature electric hoist and a connecting piece, wherein the miniature electric hoist is arranged at the top end of the air chamber, the connecting piece is arranged on the capsule body, the connecting piece is connected to one end of the connecting rope, and the miniature electric hoist is connected to the other end of the connecting rope. The retractable apron structure of the amphibious aircraft is simple in structure, easy to operate and convenient to inspect and maintain, and can well adapt to two working conditions of an air cushion aircraft, the response ofthe apron structure is higher during sailing at sea, and the seakeeping is good; and the retractable apron design can reduce the flying resistance during flying, and the air cushion aircraft is enabled to have better navigation performance.

The invention discloses a crosswise double-column supporting type superstructure of an unmanned surface vehicle. Two fully-closed struts are symmetrically arranged on a deck of a main vehicle body in the left-and-right width direction, the center of the two struts is located on the midship portion or at the position which is located in front of the midship by (1/8-1/6) L, L is the designed waterline length of the main vehicle body, the contour line between the front-most edge of the each strut and the rear-most edge of the strut from top to bottom is a quadratic parabola, and the area of the horizontal cross sections of the two struts decreases gradually from top to bottom. A first-layer perception platform and a second-layer perception platform located over the first perception platform are arranged at the top of each strut, and the first-layer perception platforms are connected with the second-layer perception platforms through connecting columns to form a composite framework of the perception platforms. Thus, perception equipment can be better arranged, the longitudinal stability of sailing of the vehicle body can be enhanced, and the sailing performance and the self-righting performance of the unmanned surface vehicle during wave sailing are enhanced.

The invention relates to an automatic fixed-point delivery type dual-power yacht and a using method thereof.The automatic fixed-point delivery type dual-power yacht comprises a yacht body, a transverse wind power mechanism is installed at the front end of a deck of the yacht body, a longitudinal wind power mechanism is installed at the rear end of the deck, and the transverse wind power mechanism and the longitudinal wind power mechanism are both electrically connected with a battery in the yacht body to jointly form an electric driving device; a chain connected with the parachute is arranged in the middle of the top surface of the yacht body; a manual and automatic control system is mounted on the speedboat body between the cable chain and the transverse wind power mechanism; a navigation and environment measurement system is further installed in the yacht body, and a fuel oil power device is rotationally installed on the lower portion of the tail end of the yacht body. The electric driving device and the fuel oil power device jointly form dual power of the speed boat, the electric driving device corrects a delivery fixed point in the descending process of the parachute, and the speed boat is driven by the dual power in a matched mode after the parachute descends, so that automatic fixed-point delivery of the speed boat is achieved, and rescue actions in a severe environment are greatly assisted.