CN103661788A

CN103661788A - Ultra-high-speed and super-cavitation catamaran with hydrofoils

Info

Publication number: CN103661788A
Application number: CN201210319158.6A
Authority: CN
Inventors: 缪德贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-03
Filing date: 2012-09-03
Publication date: 2014-03-26
Anticipated expiration: 2032-09-03
Also published as: CN103661788B

Abstract

The invention relates to an ultra-high-speed and super-cavitation catamaran with hydrofoils. The head hydrofoil and the tail hydrofoil are arranged between two ship bodies of the catamaran, the head hydrofoil is an adjustable rising hydrofoil, the tail hydrofoil is a fixed main hydrofoil which extends from the lateral gravity center of the catamaran to the head and the tail of the catamaran by equal distances, the head hydrofoil supplies rising force to the catamaran in the sailing process, the tail hydrofoil is the main hydrofoil and supports the ship bodies to sail on the water, and the tonnage of the catamaran can be increased from current hundreds of tons to tens of thousands of tons or more due to the hydrofoils. Due to the rising force surfaces of the hydrofoils and the two ship bodies of the catamaran, super-cavitation is achieved, and therefore viscous resistance between the catamaran bottom and water and viscous resistance between the hydrofoils and water can be reduced by more than 90%. A plurality of water inlet pipes are combined in the middle, a propelling device of a shrouded combined type propeller of a water outlet pipe is arranged at the rear portion of the catamaran, negative pressure is reduced on the water inlet opening in front of the catamaran so that no cavitation phenomenon can happen to the propeller, and the propelling speed is multiplied due to the water outlet opening in the rear portion of the catamaran.

Description

Hyper-speed supercavitation double-body hydrofoil ship

Technical field:

(1) application of catamaran hydrofoil, makes boats and ships wave making resistance under sail, reduces more than 90%, the application of double-body hydrofoil ship large area hydrofoil, can make the displacement of hydrofoil boat increase to ten thousand tons by hundreds of tons, along with the continuous maturation of technology, displacement also has the space of continuing increase.

(2) hydrofoil of double-body hydrofoil ship and hull bottom are realized supercavitation, can make the viscosity drag of ships reduce by 90%.

(3) application of letter road Combined spiral oar propulsive unit, the generation of having stopped cavitation phenomena, can make more than the supercavitation double-body hydrofoil ship speed of a ship or plane of ten thousand tons of displacement is increased to hundred joints.

Background technology:

Resistance rule by boats and ships is known, the increase that the resistance of boats and ships is swift and violent along with the raising of the speed of a ship or plane.Viscosity drag be approximately proportional to speed square, and wave making resistance is approximately proportional to six powers of speed.

(1) catamaran is installed hydrofoil: catamaran is installed the wave making resistance that hydrofoil can effectively reduce catamaran, two hull bottom surfaces of catamaran are connected with two hydrofoils, and the lifting surface of hull bottom surface and main wing is at same plane, first hydrofoil is the adjustable rising wing, the tail water wing is to the equidistant fixed type main wing extending of head and the tail by lateral center of gravity, when ship navigates by water, the power that first hydrofoil provides bow to rise, make bow increase, ship is low gesture after front height, at this moment, with hull bottom high rear low gesture before conplane main wing is also, for hull provides lift, make hull increase, when the tail water wing rises to the water surface, first hydrofoil is adjusted to less angle of lift, make first hydrofoil keep certain energy that rises, the tail water wing rises to the water surface and naturally returns to and approach horizontality, support hull in surface navigation, hull is surfaced substantially, only have hull bottom surface to contact with water with hydrofoil, thereby substantially eliminated wave making resistance.Compare with current hydrofoil boat, without cabane, main wing realize to maximize, for the maximization of hydrofoil boat provides support.

(2) hull bottom and hydrofoil are realized supercavitation: supercavitation is that underwater sailing body and water are separated to a technology that significantly reduces sail body running resistance with very thin air film, and underwater sailing body is realized supercavitation, can effectively reduce more than 90 percent running resistance.When double-body hydrofoil ship rises to the water surface and navigates by water at a high speed, be that hydrofoil and hull bottom surface are under high speed and high pressure state, its viscosity drag can be multiplied, and hydrofoil and hull bottom to realize supercavitation be the effective means that significantly reduces the viscosity drag of hydrofoil and hull bottom, with breather, be connected with the front horizontal edge of two hull bottom faces with the lifting surface of hydrofoil, while navigating by water at a high speed, front horizontal edge inflation to hydrofoil and two hull bottom faces, make the lifting surface of hydrofoil and the bottom surface of two hulls form very thin film overcast, be that hydrofoil and two hull bottom are realized supercavitation, compare with common ship under wave making resistance and viscosity drag all reduce by 90% state, specific consumption of fuel also will significantly reduce thereupon.

(3) hyper-speed advances: the propelling unit of current ships mainly contains two kinds, the one, screw propeller advances, the 2nd, waterjet propulsion, screw propeller advances the most general, while being characterized in work, the rotating speed of screw propeller is higher, and thrust is larger, and shortcoming is when work, the negative pressure producing above due to screw propeller produces cavitation phenomena, and the higher cavitation phenomena of rotating speed is more obvious, and the appearance of cavitation phenomena produces great negative effect to propulsion coefficient, the rotating speed of screw propeller is higher, negative pressure is larger, and cavitation phenomena is more obvious, and propulsion coefficient is lower.Some employing hydraulic efficiency jet propulsion system of naval vessel that the therefore current speed of a ship or plane is higher, waterjet propulsion is due to the particularity of its design, advance and compare with screw propeller, in certain speed range, waterjet propulsion efficiency is better than screw propeller and advances, but, because waterjet propulsion is nonlinearity motion, when fltting speed surpasses certain limit, propulsion coefficient can decline to a great extent suddenly, to the speed of a ship or plane cannot be improved effectively again, therefore to obtain higher fltting speed and better propulsion coefficient, must in new theoretical basis, to propelling unit, redesign.

The author adopts the concept of zero negative pressure before screw propeller to design, and avoids producing the propelling unit of cavitation phenomena when propelled at high velocity, thereby significantly improves fltting speed and propulsion coefficient, starts simply to analyze here from screw propeller principle of propeller.

When screw propeller is worked, the speed that screw propeller is pushed water below to is greater than the route speed of ship, cause before screw propeller and produce negative pressure, the rotating speed of screw propeller is higher, negative pressure is larger, negative pressure is to produce the major reason that cavitation phenomena reduces propulsion coefficient, therefore to make not produce negative pressure before screw propeller, the speed of water and the route speed of ship that before in theory must screw propeller, enter screw propeller equate substantially, namely before screw propeller substantially in zero negative pressure state, and screw propeller is pushed the speed of the water of propeller to and must be significantly improved, make the route speed of ship approximate the speed that enters screw propeller water before screw propeller, on this basis, the author designs the propelling unit of Liao Han road screw, can reach such effect.

Suppose the propeller plant of certain ship when cruising, the water that every propelling is 2 meters, 1 meter of ship navigation, can adopt the propelling unit of two-in-one Han road screw, the propelling unit of Ji Han road screw above by two water inlets, the screw propeller group of a water outlet next (as figure) forms, so just form two water inlets above and respectively enter the water of one meter, a water outlet next is released the water of two meters, also the water inlet above that enters letter road screw with regard to forming enters the water of one meter, a water outlet next is released the water of two meters, one meter of ship navigation, zero negative pressure of realization above of propelling unit.

If one meter of the water ship that the every propelling of the screw propeller of certain ship is three meters navigation, can be designed to three-in-one propelling unit, by that analogy, according to the size of ship, the needs of cruising speed height, design two-in-one, three-in-one, four-in-one, the propelling unit of the six directions one, nine unification and the knockdown screw propeller in more letter road.

The propelling unit of letter road screw is widely used, and is high speed ships irreplaceable high-speed and high-efficiency propelling unit under current engineering factor, and the use of centering low speed ships, also can play the effect that increases substantially propulsion coefficient.

The design of supercavitation double-body hydrofoil ship, if be used as power with high speed gas turbine, Yi Han road Combined spiral oar propulsive unit advances, the naval vessel that displacement is ten thousand tons, can obtain and surpass the above speed of a ship or plane of hundred joints, the specific consumption of fuel of unit mileage reduces by 90% in theory, because supercavitation double-body hydrofoil gear has the particularity on roomy deck, if be designed to aircraft carrier, carrier-borne aircraft is realized landing under fast state, arresting gear will become simply, and complicated catapult-launching gear can save, and the upper warship of Lu Hangji will become possibility.

Summary of the invention:

(1) between two hulls of catamaran, initial and end hydrofoil is installed.

(2) supercavitation is realized in hydrofoil and hull baseplane.

(3) two-in-one, three-in-one, four-in-one, the six directions one, nine unification letter road Combined spiral oar propulsive units.

Accompanying drawing explanation:

Fig. 1: first hydrofoil and the tail water wing

Fig. 2: two-in-one propelling unit

Fig. 3: three-in-one propelling unit

Fig. 4: four-in-one propelling unit

Fig. 5: the six directions one propelling unit

Fig. 6: nine unification propelling units

The specific embodiment:

(1) at bow, first hydrofoil being installed is the adjustable rising wing, during navigation, controls the lifting of hull, the tail water wing be lateral center of gravity to the equidistant main wing extending of head and the tail, at same plane and be connected, be fixed type main wing with the baseplane of two hulls.

(2) with breather, be connected with the lifting surface of hydrofoil and the front horizontal edge of hull bottom surface, during navigation, hydrofoil and hull bottom face separated with very thin air film and water, hydrofoil and hull bottom are realized supercavitation.

(3) two coolants inlet pipe are merged in centre, to back, be that a water outlet is two-in-one Han road Combined spiral oar propulsive unit, three coolants inlet pipe merge in centre, to being that a water outlet is three-in-one letter road Combined spiral oar propulsive unit, also can be designed to by that analogy four-in-one, the six directions one, nine unifications and more propelling unit below.

Claims

1. initial and end two hydrofoils are installed between two hulls of catamaran, and first hydrofoil is the adjustable rising wing, and the tail water wing is to the equidistant fixed type main wing extending of head and the tail by the lateral center of gravity of ship.

2. supercavitation is realized in two hull bottom surfaces of the lifting surface of hydrofoil and catamaran.

3.Han road Combined spiral oar propulsive unit.