Vessel with partial gliding inertia

FIELD: transport.

SUBSTANCE: proposed vessel consists of three modules. Mail and fuel hulls are arranged, each, at hydrofoil. Main hull with fuel hull and fuel hull with gliding tug are connected for vertical displacement. Water jet turbopump inlet and outlet are aligned at front view. Outlet pipe in projection on vertical plane is inclined to gliding site at 45 degrees. Turbojet is arranged at top section of transom area and is equipped with free turbine engaged with water-jet turbopump. Proposed airfoil vessel consists of three modules. Main hull with gliding site and airfoil can displace horizontally. This vessel is equipped with high-lift device.

EFFECT: lower drag, higher hydrodynamic properties, enhanced performances.

4 cl, 3 dwg

 

The invention relates to shipbuilding, to glycerous courts can used as a passenger ship at speeds of about and significantly more than 100 km/h.

Known to the court, effectively moving at high speed, for example ekranoplan ("Semistability winged", patent RF 2368522 from 27.09.2009 authors Surin V. In, etc.). Disadvantages: small seaworthiness due to the small gap between the wing and the water surface. During takeoff require a significant increase traction. Weight stopped the March of the additional engines and wings adds extra weight (and the weight of the additional fuel for the masses), which reduces the effectiveness of their application, the dimensions of the wings interfere with the Parking. The engines (propellers) are high up from the water surface to avoid contact with jets of water. When this harmful arises from the moment of the thrust relative to the height of the center of gravity of the vessel, clamping the nasal part of a vessel to the water surface. To improve protection against splashing water used turbojet engines (turbofan), however, due to low speeds is reduced propulsive efficiency, reducing the advantages of screen wings in the coefficient of hydrodynamic quality.

Known "glycerous ship", patent RF 2131373 from 10.06.1999 the authors Bannikova.M. and others, with a more seaworthy glycerous with the contours of the V vessel, equipped with a water jet that support by means of an auxiliary control means for optimal positive trim at high speeds. The advantage over analogue is the protection of the engine, placed in the stern compartment from splashing water. The use of water-jet turbine pump with an input device in the area of high pressure over the aft spoiler, which is equal to the full braking pressure of the incoming flow, a few pushes the boundary of stability of cavitation at a higher speed, increasing the hydraulic resistance of the vessel. The disadvantages of the prototype is to increase the hydraulic losses duridanov hull friction, and shock does not allow the values of the coefficient of hydrodynamic qualities to achieve high optimum values of speed vessels. On the transom due to the flow separation of the air pressure is somewhat reduced (the effect of bottom pressure) that leads to increased resistance to the movement of the ship at high speed.

Known classic ship on two hydrofoils, as described in the patent of the Russian Federation 2094291 author Maximov V. J. from 2705.1997. The disadvantages include the following. The ship has a low magnitude of hydrodynamic quality due gidravlicheskiye shafting, the angle of inclination of the latter and an oblique flow of water to the blades. Shafting complicates the design of the vessel at high hydrofoil racks, which are required to provide a seaworthy vessel. The location of fuel tanks in strict center of gravity of the vessel does not solve the problem of fire safety of the vessel when the engine is running on natural gas. The presence of the engine inside the ship generates noise and vibration.

A prototype of the proposed vessel with partial weight accepted planing hydrofoil shown in the patent of the Russian Federation 2434778 C1, which includes air wing, four mover -- on the basis of turbofan engines(turbofan) (2 PCs.) and water-jet turbopumps driven by turboprop engines (TVD), mounted in a special glycerolic racks in the nose and the center of the vessel, attached to the air wings. Engines and propellers are offset to each other relative to the center of gravity. Thick wings air can simultaneously be used as brizhataya jumpers and fuel tanks, and gliding rack - mounting system of underwater wings. Ventilation data ends of the racks will increase their bottom pressure and add thrust. Disadvantages. The choice of controversial schemes propellers, aircraft propeller for low speed movement will be pererestorani and �isoeffective. However, to increase the speed is impossible due to pump cavitation water cannons. Central wings perceives more than 90% of the weight of the entire device, so the operating conditions of marine environments will require a sophisticated control system to improve the sustainability movement. Vertical plates at the ends of the air wings and hull of the vessel in the place of its connection with short wings will obstruct the wings in side winds and turns, and air wings are not effective at speeds of hydrofoils. Water cannons are not equipped with mechanical intakes, so will have low values of the limits cavitation and efficiency. Deep gun rack and fenders, including the gliding surface may have a hydraulic resistance commensurate with the hydro losses of the entire device. Considering: efficiency of the vessel may assign hydrofoil vessels with hydraulic screws.

The technical result, which directed the claimed group of inventions is the reduction of hydraulic resistance and increase the coefficient of hydrodynamic quality speed vessels, as well as the expansion of operating conditions.

The technical result (option 1) is achieved by the fact that the ship consists of three modules, including the main � fuel hull, everyone on the underwater wing, and tow with piscinula platform, the main body with the fuel building, and fuel building with glycerous tug, connected with the possibility of vertical movement, inlet and outlet water of the turbopump coincide when viewed from the front, and its outlet in projection on a vertical plane inclined to piscinula the ground at an angle of 45 degrees, the turbojet engine is located in the upper part of the transom area and is equipped with a free turbine, mechanically connected with a water-jet turbopump.

The technical result (option 2) is achieved by the fact that the ship consists of two modules, including the main body with piscinula Playground and air wing, made with the possibility of lateral movement, while the ship is provided with a device of mechanization of a wing, turbojet engine located at the top of the transom area and is equipped with a free turbine, mechanically connected with the fan the second reversing device is connected to the nozzles, the axis of which is inclined to the axis of the vessel.

Device the mechanization of the wing includes located at the bow of the motorized drum and its associated system of pairs of blocks, two pairs of which on the bow frame are connected by cables with two pairs of hinge wires on the bottom flat�T. wing and the mechanisms of fixation, the liberation of the wing in the final positions.

The vessel is provided with an input device of the two diffuser, the second diffuser vane-rotary type interacts with connected with the entrance in the turbojet engine inner compartment, the walls of which is fixed a pipe supplying air to the fan with a cutout at the bottom, at the output of a set of levelling the flow divider, with the fan installed the unit thrust vector deflection in the lower part of the transom is a hole.

Fig. 1 (option 1) presents the ship with partial weight

planing hydrofoils.

Fig. 2 (option 2) presented the ship with a partial mass of planing and air wing.

Fig. 3 (option 2, Fig. 1 is a propulsion system of a vessel with partial weight planing and air wing.

The proposed vessel with partial weight planing (option 1) includes a main body 1 of the hydrofoils 2 and 3 tow equipped piscinula platform 4, a water-jet turbine pump 5 driven by a turbojet engine with free turbine (turbojet PT) 6. Input 7 and an output section 8 water turbopump coincide when viewed from the front, and an additional area in relation to its nozzle is used to set the flaps deflection of a water stream 9. Tug 3 �Rapida movably to the fuel case 10 plates 11 with the installation at a given angle of attack i piscinula site 4 (at nominal mode of operation). Fuel hull 10 is provided with hydrofoils 12, located inside capacity of natural gas 13. Fuel the body 10 and the tow 3 can be moved vertically relative to the main body 1 and the fuel to the housing 10 by means of rollers 14 and 15, respectively. Fuel hull 10 is provided with a pocket 16 in which is embedded a tow in the Parking position. The arrows indicate the flow directions of the water, gas and air.

The proposed device (option 2, Fig. 2) includes a main body 1, an air wing in the form of a hollow tank with fuel 17 supported on four uprights 18. The center of pressure of the wing is located on the center of gravity of the vessel. Two pairs of cables 19 (each moves in the same plane) mounted with one end on the wing, with the other, through the rollers on the body of the bow. All cables can be derived under the deck through a system of pulleys 20 on the frame 21 to the reel 22. The deviation of the thrust vector 9 is located at the outlet of the motor-propulsion complex of 23, which is located in the transom area of the main body. The fixation mechanisms 24, the liberation of the wing in the extreme positions interact with the bow of the vessel.

Transom area in which is situated propulsion system 23, (Fig. 3) includes a main body 1 with transom 25 and two internal p�ReportName 26, 27 limiting internal videocalifornia compartment A. the Latter is equipped with an input device 28, which includes diffusers 29, 30 with the cutter 31 of the boundary layer of the hull. With transom 25 interacts with a fan 32, with the shaft which by means of the shaft 33 are connected by a free turbine 34 turbojet engine (turbojet) 35. Between TRD and free turbine is reversible device with nozzles 36 37, inclined to the axis of the vessel. To the inner walls 26, 27 is fixed a pipe 38 with a cutout 39, the output pipe 38 in the compartment In alignment of the airflow at its input set partition 40. The outlet pipe 38 communicates with the compartment bounded by the front wall 41. At the bottom of the transom wapanese small hole 42. Arrows indicate direction of air movement. The arrows on the exit TRD show the direction of products TRD exhaust and fan.

The ship with partial weight planing shown in Fig. 1, works as follows. The steady flow of water enters the inlet section 7 water-jet turbo pump 5, driven TRD SC, and is ejected through the nozzle output section 8, creating thrust. Through a system of rollers 14, 15, the thrust pushes the main body 1 on the underwater wing 2 forward. The input of the water-jet turbo pump 5 receives the full pressure of the external flow, with opportunities�s jet diameter increase of the turbopump cavitation increases the limit on the speed of the vessel, and thanks to the coincidence of input and output holes of the external resistance of water turbopump is virtually nonexistent. Since the cross-section of a gliding module 3 mainly interact with the air (except elongated along a vessel rectangular piscinula drop-off), and air resistance can be neglected for speeds in the region of velocities of 100 km/h, the diametrical dimensions of the jet of the turbopump can be increased (reducing the speed), achieving the efficiency is over 80%. This may increase diffusionist input device of the turbopump, for which there is reason: a rectangular plot of velocities at the inlet and one small turn of the tide in the grating profile. At the same time increases the stability of the water-jet cavitation of the turbopump, and thanks to the coincidence of input and output holes of the external resistance it is virtually nonexistent.

During acceleration of the ship hull (each in its wing) rise above the surface, with a constant tug and optimal angle of attack (i piscinula surface remains on the surface of the water, moving down by means of rollers 15. The change in weight of fuel changes the depth of immersion of the wing (wings) 12, respectively, changes the effective surface area of the wing to save optimalno� angle of attack i. Freedom of movement of modules 1 and 10 relative to each other does not prevent to fend off the slight deviation of the position of the center of mass of hulls and pressure of the wings deviations of the thrust vector of the jet. Since almost the entire surface of the tow communicates with the air flow resistance is determined in the water piscinula surface of tug 3 and may have the same value as the hydraulic resistance of the prototype (of deadwood or shafting classic hydrofoil), however, this creates a lifting force. Approximately 1/10 of the weight of the vessel (the mass of the tow 3) has a hydrodynamic as K=6, and 9/10 of the weight of the vessel (hull 1,10), K=14...15. When To prototype 10...11 (due to the hydraulic resistance of columns). The drive is based on the TRD PT has a compact input / output devices that it is difficult to provide the prototype for the transition to more powerful engines inside the hull. The fire engine and the fuel is reliably separated from the cabin in which the passengers do not experience any inconvenience from noise and vibration. Quickly and safe refueling, for example, is achieved by separation of the fuel and the body 10 from modules 1 and 3 the transfer by crane it in a special box for refueling at the dock, fueled by installing the module 10 to the module 1 and the connection module 3.

Thus, pre�laga safe highly efficient three-module design of the vessel with partial weight planing on natural gas which improves the performance (inspections water cannons and wings, a quick change of the fuel module instead of refueling).

The ship with partial weight planing shown in Fig. 2, operates as follows. At the beginning of the movement of the ship accelerates, for example, up to 100 km/h, then air wing 17 is detached from the uprights 18. When driving with the acceleration and different speeds of the air wing smoothly changes the position along the axis of the vessel (rotation cables 19 at a greater angle αK), keeping constant the angle of attack and initial positive trim of a vessel in an end position (save the centers of gravity and pressure vessel). The final value of angle αKcables close to the position determined from the equation of the wing without mass:

TanαK=Su/CX where:

Su - averaged lift coefficient of the wings,

The CX - averaged hydraulic resistance coefficient of the wings.

As the air wing has mass, then after the separation angle cables αKwill be increased gradually when changing the speed of movement of the vessel. After the turn of the cables 19 to the end position is winding them on the drum 22 and the fixing of the air wing. For example, for the rotation of the drum is used the cumulative energy of the compressed air from the piston compressor (PTO powered actuator).Before the shutdown of the ship's air wing passes all the aforementioned stages reinstall in the reverse direction. When driving with confounders stability of motion is achieved by a housing with a constant and located far enough from the transom of the vessel center of gravity of the vessel and the weight of the wing, increasing the damping mass to the bow of the vessel. Seaworthiness of the proposed vessel is determined by its length and elevation of the nasal contours above the water surface.

There is another option of shifting the wing immediately after its separation, while laying in his new position at low flows compared to option 1 the speeds of movement of the vessel with subsequent acceleration to rated speed. While maintaining a constant difference between the initial and final wing position is assigned to the device thrust vector control 9.

The proposed device (option 2) does not contain a cavitating links, such as underwater wings. Therefore, the speed of the proposed vessel can be several times higher than the prototype, which also contains links to increased hydraulic resistance, such as deep rack water cannons and wings. Air wing speeds, the hydrofoil is ineffective, as their lifting force them a little more weight. If you compare the proposed device for the speed and efficiency with the subsonic aircraft (which the prototype is heavily ledge�t efficiency), it is possible to identify great benefits. The ship is equipped with a wing of small dimensions, the area of which is much smaller wings of the plane, moving at the same speed. The data space is equal to the product of the pressure ratios on the ground and the height of the coefficients of the hydrodynamic quality of the compared profiles, mass-balanced wing of the ship and the whole ship's air wing. The weight of the air wing would be less than an order of magnitude to the weight of all ship's air wing. The square root of the last number will give sufficient the value of the ratio of nominal speeds and separation of the air wing of the ship, and upon the constancy of the trim of a vessel and the angle of attack of the wing will create the conditions for the application of highly efficient aerodynamic profile, for example, the planar type with Kcu=30...50. Width piscinula site in the form of a strip along the entire length of the vessel to maintain the optimum trim of the vessel, shall be calculated at the time of separation of the wing. She will be much greater than the width corresponding to the nominal speed without air wing. Due to the large width of the site planing is achieved sufficient lateral stability. It will increase the hydrodynamic quality of Kglisserthat will be more than 7. In addition, the wing will not need ailerons that in the absence with�of edst mechanization of wings, providing a runway (landing mode) in aviation, will significantly raise the value of the hydrodynamic qualities of the wing To thecu. The aerodynamic drag of the hulls of the proposed vessel and aircraft when moving with equal velocity in the first approximation can be taken the same. Submerged planing area of the hull provides a high coefficient of hydrodynamic quality (at least 7), for which only the hull will be further upgraded high (over 30) coefficient of hydrodynamic quality of the wing that given the reduced mass of the air wings (fuel) enough for movement with the efficiency of the aircraft.

Thus, higher speed and seaworthiness in comparison with the prototype. We ship with partial weight of gliding is more efficient in comparison with the prototype.

Propulsion system shown in Fig. 3. After the input device 29, the air flow with a high coefficient of recovery of the kinetic energy of high-speed external flow enters the inner compartment A. In the inner compartment And the flow of air from the input device wraps around the pipe, separates water and arrives at the inputs 35 TRD directly and the fan 32 through the cutout 39 in the pipe 38, the alignment costs of the jets Prigorodnoe and inner compartment B. After the preload in TRD 35 the combustion products enter the reversing device 36, free turbine 34 and discharged into the atmosphere. Fan blades disperse the air is greater than the speed of the incoming stream, creating thrust. On startup, the fan blades can touch the water inside the compartment B, so with the help of the reversing device, the combustion products are directed into the nozzle 37. Creates a craving, the ship accelerates and the water out with been made use of fan blades through a small hole 42 in the transom. After that, the reversing device 36 is shifted to the normal operating mode and the propulsion is generated by rotation of the fan 32. The deviation of the thrust vector produced by the device 9.

Compared to aviation turbofan engines (turbofan) prototype, designed for high almost sonic speeds, increased bypass ratio of the engine and so that it can achieve full adaptation to the speed of the object with the growth of its efficiency. The presence of a reducer will improve the coordination of power units - fan free turbine 31 and 32. Compared to other turboprop engines (TVD) prototype: input in TRD is not cluttered with gear and root sections of the blades, as in TVD that will improve the efficiency of thermodynamic cycle of this promo video� engine increasing the degree of increase in pressure of the compressor and accordingly the temperature before the turbine turboprop engine. Therefore, influencing the reduction in efficiency of the motor-driving complex hydraulic losses in the air intake will be more than compensated. Produced by the jet propulsion gas helps increase bottom pressure on the transom of the vessel, increase thrust and preservation of constant cross section of the main hull in the transom area.

Thus, the propulsion system is quite effective, reliably blocked from interaction with water jets and provides improved conditions.

1. The ship with partial weight planing, comprising a main body hydrofoils, propulsion system for hydrocarbon fuels comprising a turbojet engine, and jet turbine pump, characterized in that it consists of three modules, including main and fuel buildings on the underwater wing, and tow with piscinula platform, the main body with the fuel building, and fuel building with glycerous tug, connected with the possibility of vertical movement, inlet and outlet water of the turbopump coincide with the front view and the outlet in projection on a vertical plane inclined to piscinula under an angle� 45 degrees, the turbojet engine is located in the upper part of the transom area and is equipped with a free turbine, mechanically connected with a water-jet turbopump.

2. The ship with partial weight planing having a main body, wings air, propulsion system for hydrocarbon fuels comprising a turbojet engine, characterized in that it consists of two modules, including the main body with piscinula Playground and air wing, made with the possibility of lateral movement, while the ship is provided with a device of mechanization of a wing, turbojet engine, located in the upper part of the transom area, equipped with a reversing device and a free turbine, mechanically connected with the fan, the second reversing device is connected to the nozzles, the axis of which is inclined to the axis of the vessel.

3. The ship with partial weight planing according to claim 2, characterized in that the device of the flaps includes located at the bow of the motorized drum and its associated system of pairs of blocks, two pairs of which on the bow frame are connected by cables with two pairs of hinge wires on the bottom plane of the wing, and the mechanisms of fixation, the liberation of the wing in the final positions.

4. The ship with partial weight planing according to claim 2, characterized in that sleep�wifey input device of the two diffusers, the second diffuser vane-rotary type interacts with connected with the entrance in the turbojet engine inner compartment, the walls of which is fixed a pipe supplying air to the fan with a cutout at the bottom, at the output of a set of levelling the flow divider, with the fan installed the unit thrust vector deflection in the lower part of the transom is a hole.



 

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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

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