CN102514683A - Ship - Google Patents
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- CN102514683A CN102514683A CN2012100044138A CN201210004413A CN102514683A CN 102514683 A CN102514683 A CN 102514683A CN 2012100044138 A CN2012100044138 A CN 2012100044138A CN 201210004413 A CN201210004413 A CN 201210004413A CN 102514683 A CN102514683 A CN 102514683A
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- hull
- fluid
- fluid passage
- ship
- water outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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Abstract
The invention discloses a ship. A fluid channel is arranged below a water line of the ship; a distance of the fluid in the fluid channel flowing from a water inlet to a water outlet is greater than a distance of the fluid flowing outside a ship body from a position corresponding to the water inlet to a position corresponding to the water outlet, so that fluid which flows out of the fluid channel has a faster flowing speed than the fluid which flows outside a ship body. According to the ship disclosed by the invention, travelling speed of the ship is improved, energy consumption is reduced and energy source is saved.
Description
Technical field
The present invention relates to a kind of ship; Relate in particular to a kind of ship that below the hull floating line, has the fluid passage, the distance that the fluid passage inner fluid flows between from the water inlet to the water outlet greater than the fluid of hull flows outside from and the corresponding position of water inlet to and the corresponding position of water outlet the distance that flows.
Background technology
Ship goes in water, receive the support of water buoyancy, but hull is heavy more, and displacement is big more, absorbs water deeply more, and then resistance is big more.Therefore, no matter go at the water surface, still in water, go, resistance in the water that receives below the hull floating line all is to cause the foot flow velocity to be difficult to the key factor that further improves.
Summary of the invention
The present invention is directed to above-mentioned technical matters, designed and developed a kind of ship.Ship of the present invention is provided with the fluid passage below floating line; The distance that the fluid passage inner fluid flows between from the water inlet to the water outlet greater than the fluid of hull flows outside from and the corresponding position of water inlet to and the corresponding position of water outlet the distance that flows; Thereby the flow rate of fluid that makes the fluid that flows out from the fluid passage compare the hull flows outside wants fast; Improve the speed that ship goes, reduced energy consumption, practiced thrift the energy.
Technical scheme provided by the invention is:
A kind of ship; Comprise hull; Said hull is provided with by the fore position of said hull to fluid passage that the Stern Post of said hull extends; Said fluid passage is the pipeline that the confession fluid of inner hollow passes through from its inside; Said fluid passage is provided with water inlet and water outlet, and said water inlet and water outlet all are symmetrical set with respect to the axis along its length of said hull, said fluid passage inner fluid from said water inlet to the distance that flows the said water outlet greater than the fluid of said hull flows outside from and the corresponding position of said water inlet to and the corresponding position of said water outlet the distance that flows.
Preferably, in the described ship, said fluid passage is positioned at the inside of said hull or is positioned at the outside of the bottom of hull.
Preferably; In the described ship; Said fluid passage can be one, also can be the axis along its length of said relatively hull distribute a plurality of, wherein; Said fluid passage is that the axis along its length of the said relatively hull in said a plurality of fluid passages is symmetrical set under a plurality of situation.
Preferably, in the described ship, inside, said fluid passage is distributed with a plurality of flow-disturbing bodies, and said flow-disturbing body cross-sectional plane in the horizontal direction is ellipse, circle, triangle, rhombus, waveform, parabola shaped.
Preferably; In the described ship, said fluid passage is centered on by top, bottom and two relative sidepieces and forms, wherein; The surface towards said fluid passage of at least one is the flow-disturbing face in said top, bottom and the both sides; Said flow-disturbing face is to be formed by the low middle high fish scale shape projection permutation with repetition in a plurality of both sides, is perhaps formed by a plurality of wavy projection permutation with repetitions, is perhaps formed by bar shaped, circle, ellipse, circle, triangle or rhombus projection permutation with repetition.
Preferably, in the described ship, said fluid passage is curved channel, helical channel or serpentine channel.
Preferably; In the described ship; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of; Said a plurality of fluid passage has respectively in the fore position of said hull and a plurality of one to one water inlets in said a plurality of fluid passages; Stern Post at said hull has respectively and a plurality of one to one water outlets in said a plurality of fluid passages, and wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
Preferably; In the described ship; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of, said a plurality of fluid passages have a common water inlet in the fore position of said hull, have a common water outlet at the Stern Post of said hull; Wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
Preferably, in the described ship, the sidepiece of said hull is provided with the water inlet that a plurality of well-distributeds are communicated with said fluid passage.
Preferably, in the described ship, the position of said water outlet is provided with the suction actuating unit.
Ship of the present invention is provided with the fluid passage below floating line; The distance that the fluid passage inner fluid flows between from the water inlet to the water outlet greater than the fluid of hull flows outside from and the corresponding position of water inlet to and the corresponding position of water outlet the distance that flows; Thereby the flow rate of fluid that makes the fluid that flows out from the fluid passage compare the hull flows outside wants fast; Improve the speed that ship goes, reduced energy consumption, practiced thrift the energy.
Description of drawings
Fig. 1 is the lateral plan of embodiment one of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the lateral plan of embodiment two of the present invention;
Fig. 4 is an A-A cutaway view under first kind of situation of Fig. 3;
Fig. 5 is an A-A cutaway view under second kind of situation of Fig. 3;
Fig. 6 is an A-A cutaway view under the third situation of Fig. 3;
Fig. 7 is the structural representation of flow-disturbing piece of the present invention;
Fig. 8 is the lateral plan of embodiment three of the present invention;
Fig. 9 is the back view of enforcement three of the present invention;
Figure 10 is the A-A cutaway view of Fig. 8;
Figure 11 is the structural representation of flow-disturbing face of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description, can implement according to this with reference to the specification sheets literal to make those skilled in the art.
As shown in Figure 1; The present invention provides a kind of ship; Comprise hull; Said hull is provided with by the fore position of said hull to fluid passage that the Stern Post of said hull extends; Said fluid passage is the pipeline that the confession fluid of inner hollow passes through from its inside; Said fluid passage is provided with water inlet and water outlet, and said water inlet and water outlet all are symmetrical set with respect to the axis along its length of said hull, said fluid passage inner fluid from said water inlet to the distance that flows the said water outlet greater than the fluid of said hull flows outside from and the corresponding position of said water inlet to and the corresponding position of said water outlet the distance that flows.
In the above-mentioned hull, the water inlet of fluid passage and water outlet must be all be symmetrical set with respect to the axis along its length of hull, like this, just can guarantee the stable and balance of ship.
In the described ship, said fluid passage is positioned at the inside of said hull or is positioned at the outside of the bottom of hull.
In the described ship; Said fluid passage can be one, also can be the axis along its length of said relatively hull distribute a plurality of, wherein; Said fluid passage is that the axis along its length of the said relatively hull in said a plurality of fluid passages is symmetrical set under a plurality of situation.In the described ship, inside, said fluid passage is distributed with a plurality of flow-disturbing bodies, and said flow-disturbing body cross-sectional plane in the horizontal direction is ellipse, circle, triangle, rhombus, waveform, parabola shaped.
In the described ship; Said fluid passage is centered on by top, bottom and two relative sidepieces and forms; Wherein, the surface towards said fluid passage of at least one is the flow-disturbing face in said top, bottom and the both sides, and said flow-disturbing face is to be formed by the low middle high fish scale shape projection permutation with repetition in a plurality of both sides; Perhaps form, perhaps form by bar shaped, circle, ellipse, circle, triangle or rhombus projection permutation with repetition by a plurality of wavy projection permutation with repetitions.
In the described ship, said fluid passage is curved channel, helical channel or serpentine channel.
In the described ship; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of; Said a plurality of fluid passage has respectively in the fore position of said hull and a plurality of one to one water inlets in said a plurality of fluid passages; Stern Post at said hull has respectively and a plurality of one to one water outlets in said a plurality of fluid passages, and wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
In the described ship; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of; Said a plurality of fluid passage has a common water inlet in the fore position of said hull; Stern Post at said hull has a common water outlet, and wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
In the described ship, the sidepiece of said hull is provided with the water inlet that a plurality of well-distributeds are communicated with said fluid passage.
In the described ship, the position of said water outlet is provided with the suction actuating unit.
Embodiment one
As depicted in figs. 1 and 2, hull 1 of the present invention forwardly has water inlet 101, has water outlet 3 to communicate with serpentine fluid passage 2 at the rear portion, and the fluid passage is arranged on the below of floating line 104, is positioned at hull interior.In water outlet 3, be provided with engine installation 4 and accelerate the flow velocity in the passage.Because the path of fluid passage inner fluid process; Path greater than hull surrounding fluid process; So the rate of flow of fluid of fluid passage nature is faster than the flow rate of fluid of hull outside process, the flow velocity of hull outside flowing fluid can be regarded as the kinematic velocity of hull, therefore; The speed of the fluid that flow out the fluid passage is faster than the speed of ship motion, thereby to the ship generation propelling thrust that goes.The above-mentioned serpentine fluid passage just both sides of fluid passage becomes the form of wavy flow-disturbing face.
Helix also can be arranged in the fluid passage.
Embodiment two
As shown in Figure 3; The inner top surface 105, fluid passage or the lower surface 107 that communicate before and after in the hull 1 of ship of the present invention are curved surfaces; Can also be that top surface or lower surface are respectively curved surfaces; Also can be that top surface and lower surface are curved surfaces simultaneously, thereby fluid is prolonged through the path of fluid passage.Certainly, also can curved surfaces be arranged to scraggly flow-disturbing face.
Provided the scheme drawing of difform flow-disturbing face among Figure 11.Scraggly flow-disturbing face forms in the following manner; The flow-disturbing face is formed by low middle high fish scale shape surface, a plurality of both sides permutation with repetition; Perhaps form, perhaps form by bar shaped, circle, ellipse, circle, triangle or rhombus projection permutation with repetition by a plurality of wavy surface permutation with repetitions.When fluid during through the flow-disturbing face, fluid the path of process elongated, but to guarantee that fluid can unobstructed process, and can not artificially produce resistance.
When foot, fluid imports the forward fluid in the fluid passage 2 from anterior water inlet 101, discharges from water outlet again.The water inlet 108 that the ship both sides are uniformly distributed with imports the fluid resistance of side direction in the fluid passage 2.For longer hull, lateral fluid tightly twines around the hull, with producing very big lateral fluid pressure, the pressure that this lateral fluid pressure even serious offense forward fluid are produced.Be arranged in the anterior water inlet 101 of hull and the water inlet 108 of sidepiece and completely all point to hull afterbody water outlet to the forward of foot and lateral fluid pressure respectively, thereby make the fluid resistance of forward and side direction significantly reduce.
Fig. 4, Fig. 5 and Fig. 6 are respectively to three kinds of situation in the present embodiment.
Among Fig. 4 and Fig. 5, hull interior is provided with a plurality of fluid passages, and a plurality of fluid passages are respectively first fluid passage 208, second fluid passage 204, the 3rd fluid passage 205, the 4th fluid passage 201, the 5th fluid passage 209.A plurality of fluid passages have a common water inlet 101 among Fig. 4, and have a common water outlet, and water inlet and water outlet are all bigger, are convenient to fluid and get into the fluid passage and flow out from the fluid passage.Because a plurality of fluid passages among Fig. 4 are cambers; Front end at hull has crossing place; Therefore, 3 water inlets can be set also, and the place of intersecting in a plurality of fluid passages; Then on the wall of fluid passage, being provided with can be with the port of adjacent two fluid passages perforation, so that fluid can get into a plurality of fluid passages at the same time.Then a plurality of fluid passages have a plurality of independent water outlets among Fig. 5, corresponding respectively first water outlet 303 in first fluid passage 208, second fluid passage 204, the 3rd fluid passage 205, the 4th fluid passage 201, the 5th fluid passage 209, second water outlet 304, the 3rd water outlet 306, the 4th water outlet 307, the 5th water outlet 305.
Under the situation of a plurality of fluid passages, at first, need a plurality of fluid passages to be symmetrical set with respect to the axis along its length of hull.In Fig. 4 or Fig. 5, the first fluid passage is consistent with the shape of the 5th fluid passage, and second fluid passage is consistent with the shape of the 4th fluid passage, and then the axis of ship length direction is symmetrical relatively for the 3rd fluid passage shape in the middle of being positioned at.Like this, could guarantee that the flow rate of fluid that flows out from first fluid passage and the 5th fluid passage is consistent, second fluid passage is consistent with the fluid of the fluid that flow out the 4th fluid passage, and like this, ship just can keep going of balance.
In the ship driving process, produce the forward fluid resistance with forward fluid collision back, but fluid is imported, then dissolved the forward fluid resistance through the method for dredging.And roomy in the fluid passage, side surfaces is smooth cambered surface, and quantity of liquid speeds up in unimpeded passage, when a large amount of rapid fluids sprays from water outlet, just ship has been produced propelling thrust.In addition; Screw propeller has impetus to the fluid in its areal extent, above-mentioned quantity of liquid after water outlet ejection, also will be centered around screw propeller around; Add the fluid that arrives the hull afterbody by hull outside route; What the fluid layering of three bursts of different in flow rate was orderly is centered around together, and moment is filled ship rear portion zone of negative pressure, and after the combined action ship being gone produces bigger propelling thrust.
Shown in Fig. 4 and 6, be distributed with a plurality of flow-disturbing bodies 5 in the fluid passage, fluid gets into the fluid passage, and disturbed fluid disturbs, and the path of in the fluid passage, flowing obtains prolonging.Fig. 7 has provided the scheme drawing of difform flow-disturbing piece.Flow-disturbing body cross-sectional plane in the horizontal direction can be ellipse, circle, triangle, rhombus, waveform, parabola shaped etc.In fact, utilize a plurality of flow-disturbing bodies that the fluid passage is divided into a plurality of branch fluid passages, when fluid is flowed through the flow-disturbing body; Form vortex; And the flow rate of fluid that forms vortex is comparatively faster, and such fluid can produce propelling thrust to ship after the water outlet ejection.When fluid during through the flow-disturbing body, fluid the path of process elongated, but to guarantee that fluid can unobstructed process, and can not artificially produce resistance.
Embodiment three
The fluid passage also can be arranged on hull bottom.Also having two cross sections about the bottom of hull is similar leg-of-mutton enclosed construction 112; Two spaces between similar leg-of-mutton enclosed construction 112 in above-mentioned cross section and the fluid passage 2 also can be regarded a kind of fluid passage of form as; Respectively it is called the 6th fluid passage 203 and the 7th fluid passage 202; The sidepiece of the 6th fluid passage and the 7th fluid passage also belongs to smooth cambered surface, and the path of fluid process is extended.
The fore part 111 of the hull of present embodiment is a triangle; Each face of hull is a multiaspect shape; The below of the floating line 104 of part 111 on the bow; Right side water inlet 102, left side water inlet 103 and middle water inlet 101 are arranged respectively, and left and right sides fluid is separately through the 6th fluid passage 203 and the 7th fluid passage 202, from the left side water outlet 301 that is positioned at Stern Post, water outlet 302 ejection at a high speed on right side.Above-mentioned spouting velocity is greater than ship motion speed.The fluid that so is higher than foot speed in a large number is bound to produce propelling thrust and helps foot, and this power resources are not that the suction actuating unit directly produces, but produce indirectly.Here; Fluid passage, the left and right sides is longer more than the path of the fluid process of hull outside; The speed of the fluid that flows out from fluid passage, the left and right sides is very fast relatively, and it is many more to produce the part that fluid passage, the propelling thrust left and right sides grows to ship, and the propelling thrust of generation is big more.
At this moment, suction actuating unit strong suction sucks fluid from water inlet 101 strongly, through fluid passage 2, sprays at a high speed from middle water outlet 3 then.The fluid of left side water outlet and right side water outlet ejection is centered around around the fluid of water outlet 3 ejections; Fluid with process around the hull; Form the fluid of three bursts of different in flow rate; Moment is filled the rear portion zone of negative pressure, and is common again each other around producing bigger propelling thrust, promotes the ship fast running.The forward quarter is the long triangle bodily form as opportunity of combat, and the forward resistance is reduced.Each face all is a polyhedron around the hull, if coat invisible coating, is exactly the good stealthy battleship of performance.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification sheets and the embodiment; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (10)
1. ship; Comprise hull; It is characterized in that; Said hull is provided with by the fore position of said hull to the fluid passage that the Stern Post of said hull extends, and said fluid passage is the pipeline that the confession fluid of inner hollow passes through from its inside, and said fluid passage is provided with water inlet and water outlet; Said water inlet and water outlet all are symmetrical set with respect to the axis along its length of said hull, said fluid passage inner fluid from said water inlet to the distance that flows the said water outlet greater than the fluid of said hull flows outside from and the corresponding position of said water inlet to and the corresponding position of said water outlet the distance that flows.
2. ship as claimed in claim 1 is characterized in that, said fluid passage is positioned at the inside of said hull or is positioned at the outside of the bottom of hull.
3. ship as claimed in claim 2; It is characterized in that; Said fluid passage can be one, also can be the axis along its length of said relatively hull distribute a plurality of, wherein; Said fluid passage is that the axis along its length of the said relatively hull in said a plurality of fluid passages is symmetrical set under a plurality of situation.
4. ship as claimed in claim 3 is characterized in that, inside, said fluid passage is distributed with a plurality of flow-disturbing bodies, and said flow-disturbing body cross-sectional plane in the horizontal direction is ellipse, circle, triangle, rhombus, waveform, parabola shaped.
5. ship as claimed in claim 3; It is characterized in that; Said fluid passage is centered on by top, bottom and two relative sidepieces and forms; Wherein, the surface towards said fluid passage of at least one is the flow-disturbing face in said top, bottom and the both sides, and said flow-disturbing face is to be formed by the low middle high fish scale shape projection permutation with repetition in a plurality of both sides; Perhaps form, perhaps form by bar shaped, circle, ellipse, circle, triangle or rhombus projection permutation with repetition by a plurality of wavy projection permutation with repetitions.
6. ship as claimed in claim 3 is characterized in that, said fluid passage is curved channel, helical channel or serpentine channel.
7. like claim 4 or 5 or 6 described ships; It is characterized in that; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of; Said a plurality of fluid passage has respectively in the fore position of said hull and a plurality of one to one water inlets in said a plurality of fluid passages; Stern Post at said hull has respectively and a plurality of one to one water outlets in said a plurality of fluid passages, and wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
8. like claim 4 or 5 or 6 described ships; It is characterized in that; Said fluid passage be the axis along its length of said relatively hull distribute a plurality of, said a plurality of fluid passages have a common water inlet in the fore position of said hull, have a common water outlet at the Stern Post of said hull; Wherein, the sectional area sum of said a plurality of water inlets equates with the area of fluid with the impingement area of said hull generation head-on crash.
9. like claim 4 or 5 or 6 described ships, it is characterized in that the sidepiece of said hull is provided with the water inlet that a plurality of well-distributeds are communicated with said fluid passage.
10. ship as claimed in claim 3 is characterized in that the position of said water outlet is provided with the suction actuating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100044138A CN102514683A (en) | 2012-01-09 | 2012-01-09 | Ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100044138A CN102514683A (en) | 2012-01-09 | 2012-01-09 | Ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102514683A true CN102514683A (en) | 2012-06-27 |
Family
ID=46285852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100044138A Pending CN102514683A (en) | 2012-01-09 | 2012-01-09 | Ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102514683A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260823A (en) * | 2014-10-08 | 2015-01-07 | 朱晓义 | Underwater running gear |
| CN105073575A (en) * | 2013-01-18 | 2015-11-18 | 凯亚戈有限公司 | Watercraft comprising a redundant energy accumulator |
| CN105752262A (en) * | 2016-04-20 | 2016-07-13 | 王军辉 | Resistance reduction and efficiency improvement ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR559548A (en) * | 1922-01-20 | 1923-09-17 | Windsock for mechanically propelled devices | |
| CN1095029A (en) * | 1993-05-03 | 1994-11-16 | 中国科学院长沙农业现代化研究所机械研究分所 | Suction-discharge type fast ship with built-in shape pipe in body |
| CN2228055Y (en) * | 1995-03-02 | 1996-05-29 | 陈振诚 | Flying-fish-type sailing implement on water |
| US5848768A (en) * | 1994-04-28 | 1998-12-15 | British Aerospace Plc | Laminar flow skin |
| CN2499333Y (en) * | 2001-09-07 | 2002-07-10 | 贺志国 | Resistance reducing device for ship |
-
2012
- 2012-01-09 CN CN2012100044138A patent/CN102514683A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR559548A (en) * | 1922-01-20 | 1923-09-17 | Windsock for mechanically propelled devices | |
| CN1095029A (en) * | 1993-05-03 | 1994-11-16 | 中国科学院长沙农业现代化研究所机械研究分所 | Suction-discharge type fast ship with built-in shape pipe in body |
| US5848768A (en) * | 1994-04-28 | 1998-12-15 | British Aerospace Plc | Laminar flow skin |
| CN2228055Y (en) * | 1995-03-02 | 1996-05-29 | 陈振诚 | Flying-fish-type sailing implement on water |
| CN2499333Y (en) * | 2001-09-07 | 2002-07-10 | 贺志国 | Resistance reducing device for ship |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105073575A (en) * | 2013-01-18 | 2015-11-18 | 凯亚戈有限公司 | Watercraft comprising a redundant energy accumulator |
| CN105073575B (en) * | 2013-01-18 | 2017-12-12 | 凯亚戈有限公司 | Include the ship of redundant energy holder |
| CN104260823A (en) * | 2014-10-08 | 2015-01-07 | 朱晓义 | Underwater running gear |
| CN105752262A (en) * | 2016-04-20 | 2016-07-13 | 王军辉 | Resistance reduction and efficiency improvement ship |
| CN105752262B (en) * | 2016-04-20 | 2017-11-03 | 王军辉 | Drag reduction synergy ship |
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Application publication date: 20120627 |