The trimaran

 

(57) Abstract:

Usage: the invention relates to shipbuilding and allows you to increase the speed trimaran, reduce the consumption of fuel and lubricants. The invention consists in that each of the side floats trimaran made with transom, oriented angle 38 -40oto the median plane. 2 Il.

The invention relates to shipbuilding, and for the design trimarans.

Famous trimaran containing medium body, coupled with the two side floats (ed. St. USSR N 1123928, class B 63 B 1/12 1982).

However, they have low speed.

The purpose of the invention increase performance of the trimaran by increasing the speed of its movement.

The aim is achieved in that each of the floats made with transom, oriented at an angle 38 of the 40oto the median plane.

In Fig. 1 schematically shows a top view of the proposed trimaran. In Fig.2 section a-a in Fig.1; the figures of the drawings the above symbols:

PD median plane of the middle hull;

C speed trimaran;

V the velocity of the orbital motion of water particles inside Rasheed average housing 1, coupled with the two side floats 2, made with transom 3, oriented at an angle 38 of the 40oto the median plane.

When driving a straight course, the housing 1 forms a diverging waves that interact dynamically with the transom 3 float 2 (Fig. 1, 2).

In case of diverging waves the speed of the orbital motion of water particles V positive and directed toward the movement of the ship.

The relative velocity of the orbital motion of water particles in diverging waves /speed relative to the top of diverging waves or on the hull of the trimaran/ greater than zero. Therefore, the orbital motion of water particles in diverging waves when interacting with the transom 3 of the float 2 and create on this positive pressure.

When the movement of the trimaran straight course at a constant speed on the transom 3 of floats 2, oriented at an angle 38 -40ofor BP, there is an additional hydrodynamic pressure in the direction of movement of the trimaran, which increases the speed of its movement.

The trimaran containing medium body, coupled with the two side floats, characterized in that each of the above Poplavko the

 

Same patents:

The ship split case // 2081021
The invention relates to shipbuilding and for the design of ship hulls

The invention relates to aircraft that can move near the surface of the liquid, as well as for vessels with dynamic principles of maintenance

The invention relates to shipbuilding and the construction of specialized vessels for production and transportation of ice of the Arctic and Antarctic icebergs

Hydrofoil // 2077446

The invention relates to shipbuilding and for the design aft end of the hull for various purposes

Pentamaran // 2076056

Chassis // 2074099
The invention relates to shipbuilding, in particular to a circuit chassis, using the lifting force of the air cushion above the bottom of the vessel
River vessel // 2072679
River vessel // 2072679

Marine hydrofoil // 2244338

FIELD: shipbuilding; manufacture of ship stabilization systems equipment with deeply-submerged hydrofoils.

SUBSTANCE: proposed marine hydrofoil is provided with units for determination of its speed and depth of submergence mounted on it and connected to shipboard computer. Mounted additionally on hydrofoil are units for determination of side slip and angle of attack which are also connected to shipboard computer.

EFFECT: enhanced efficiency.

1 dwg

Boat-catamaran // 2245815

FIELD: shipbuilding; building boats-catamarans for scientific work and pleasure boats for inspection of surface of fresh water and sea water basins.

SUBSTANCE: proposed boat-catamaran has floats located symmetrically relative to longitudinal axis and rigidly interconnected; floats are made in form of elastic gas-tight cylindrical skegs-pneumatic balloons. Each of them is located between flexible couplings and is engageable with its lower and upper surfaces by means of changeable safety ski and one of pylons. Pylons give support for disk-shaped cabin consisting of convex spherical upper and lower sections hermetically interconnected through intermediate all-round vision segment provided with bearing flange, control system and power plant mounted on transom plate which is secured on pylon bases. Boat is provided with float draft control mechanism which is made in form of gaseous working medium pressure regulators in cavities of floats-pneumatic balloons; it is connected with compressor receiver by means of gas lines. Power plant is provided with hinged column which is swivel in horizontal plane. Each float is provided with additional skegs-pneumatic balloons giving support for main skeg-pneumatic balloon along longitudinal axis. Lower spherical section of said cabin is provided with blisters in form of hermetic port lights in bottom. Pylons and changeable safety ski are provided with cradles engageable with main and additional skegs-pneumatic balloons by equidistant surfaces. Bearing flange of intermediate all-round vision segment of disk-shaped cabin is secured on pylons.

EFFECT: extended field of application.

6 cl, 4 dwg

FIELD: shipbuilding; designing fore portion of ship's hull with sonar antenna dome.

SUBSTANCE: ship's fore extremity includes inclined stem with V-shaped frames in the vicinity of design waterline, recess and section of bottom projecting downward; fore point of this bottom is located at level lying in lower half of draft. Frames are inclined towards CL at acute angle in the area of fore portion of projecting part of bottom. Tapering of waterlines near aft portion of section of bottom (dome) projecting downward ensures smooth curve of cross-sectional area near its aft portion; length of section of bottom (dome) projecting downward ranges from 0.1 to 0.2 of hull length over design waterline and ratio of projecting section of bottom (dome) to hull breadth on design waterline ranges from 0.25 to 0.4. Depth of lower point of projecting section of bottom (dome) exceeds hull draft amidships by 0.9 to 1.2 times; deadrise angle of projecting section of bottom (dome) is equal to 29° at lower point and cross-section of projecting portion of bottom (dome) is between stations 1 and 2.

EFFECT: improved seaworthiness and running characteristics of ship.

2 dwg

FIELD: shipboard equipment.

SUBSTANCE: proposed load-bearing structure is made in form of wing provided with toothed plates (16) on free edges for breaking the tip vortex formed due to pressure of liquid. Ridges made on edges of plates are used for fast dissipation of vortices in line of hydrophones (30) towed by ship (31) in conducting seismic trials at sea.

EFFECT: reduced noise interference to hydrophones.

7 cl, 10 dwg

FIELD: shipbuilding and aircraft manufacture; devices for reduction of resistance of water or air to motion of ship or aircraft.

SUBSTANCE: proposed device is made in form of taper semi-oval cover plate secured to side and provided with narrow inlet hole and wide outlet hole. Narrow inlet hole is oriented forward in way of motion.

EFFECT: enhanced efficiency.

2 dwg

FIELD: transport engineering; reduction of resistance to motion by forming viscoelastic coats on bodies.

SUBSTANCE: proposed method includes the following operations: (a) estimation of characteristics of turbulent boundary layer at preset rate of free flow making use of boundary conditions for rigid surface having the same shape and size as surface with coat; characteristics include thickness of boundary layer, phase rate and frequency corresponding to maximum energy-carrying disturbances, profiles of average rate, distribution of Raynolds stresses, distribution of shear stress on wall and friction resistance; (b) selection of properties of material of coat including density, complex shear modulus and thickness of coat at which coat subjected to action of stimulating function identical to load formed by this boundary layer and determined at stage (a) ensures maximum flux of energy with no disturbance in surface; (c) estimation of characteristics of boundary layer on coat at preset rate of free flow making use of amplitude of oscillations and energy flux corresponding to properties of material selected at stage (b) including the average rate profiles, distribution of Raynolds stresses, distribution of shear stresses on wall and friction resistance; (d) determination of reduction of friction resistance in percent as ratio to difference between magnitudes of friction resistance with and without coat estimated at stages (a) and (c) to friction resistance determined at stage (a) for determination of quantitative magnitudes of composition and configuration of coat; (e) forming viscoelastic coat from material or combination of materials selected at stages (a) thru (d).

EFFECT: enhanced efficiency of reduction of friction resistance.

15 cl, 4 dwg, 1 tbl

FIELD: shipbuilding; shipboard units for creating additional thrust.

SUBSTANCE: device is made in form of additional bottom located in fore extremity of ship and engageable with main bottom by means of inclined surface.

EFFECT: improved sea-going properties of ship and habitability for crew.

2 dwg

FIELD: shipbuilding; shipboard units for creating additional thrust.

SUBSTANCE: device is made in form of additional bottom located in fore extremity of ship and engageable with main bottom by means of inclined surface.

EFFECT: improved sea-going properties of ship and habitability for crew.

2 dwg

Ship // 2255020

FIELD: shipbuilding; building of multi-hulled ships.

SUBSTANCE: proposed catamaran has two hulls in form of oblong cylinders with cone-shaped fore and aft extremities, decks, propellers and steering gear. Hulls are interconnected by means of horizontal transversal rods in above-water portion and longitudinal keel girder which is connected with hulls by means of inclined rods in under-water portion of hulls. Said connection members form truss together with hulls in form of triangular prism; adjoining to bases of this prism are pointed sections in form of triangular pyramids whose vertices lie on ends of keel girder. Angle at which faces of prism intersect is equal to 40-70 deg. Ratio of width between axes of hulls to their length is 0.5-1.5 and ratio of length of hulls to length of keel girder is equal to 0.3-0.9.

EFFECT: improved service characteristics of ship and improved sea-worthiness of ship.

10 cl, 5 dwg

FIELD: shipbuilding; anti-drift units.

SUBSTANCE: proposed anti-drift unit includes flexible parts of shell plating which may be sagged inside and outside the hull by means of drive.

EFFECT: enhanced compensation of ship's drift.

2 dwg

Up!