CN107150760B - Supercavitation hydrofoil trimaran - Google Patents
Supercavitation hydrofoil trimaran Download PDFInfo
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- CN107150760B CN107150760B CN201710403681.XA CN201710403681A CN107150760B CN 107150760 B CN107150760 B CN 107150760B CN 201710403681 A CN201710403681 A CN 201710403681A CN 107150760 B CN107150760 B CN 107150760B
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- hydrofoil
- supercavitation
- adjusting
- propeller
- recyclable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
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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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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a supercavitation hydrofoil trimaran. The front end of the main hull is provided with a double-bulb bow, the bottom of the main hull is provided with a recyclable adjusting hydrofoil and a fixed immersing hydrofoil, cavitation devices are arranged on the recyclable adjusting hydrofoil and the fixed immersing hydrofoil, the rear part of the tail part of the main hull is provided with a ducted fan type propeller, and the tail part of the auxiliary hull is provided with the fixed immersing hydrofoil. According to the invention, the medium on the surface of the ship body is changed from water to a water vapor mixture, so that the sailing speed of the ship is improved, the ship body can be lifted upwards, the friction between the water and the ship body is reduced, the adverse effects of large-degree pitching, heaving and the like of the ship body are avoided, and the drag reduction efficiency of the hydrofoil is greatly improved; the ducted fan type propeller improves the propulsion efficiency and greatly prolongs the service life of the propeller.
Description
Technical Field
The invention relates to the field of manufacturing of novel high-performance ships, in particular to a super-cavitation hydrofoil trimaran.
Background
The twenty-first century is the century of the ocean, which is a non-competing fact, the control of the near and far seas is enhanced, the maintenance of the ocean interests is gradually becoming the strategic demands and competing targets of the large ocean countries, the ocean development, the ocean transportation, the motor response and the like are closely related to the navigational speed of ships, and the emphasis of the development of the civil ships in the century is generally considered to be high-speed.
The wave making resistance of the trimaran under high navigational speed is far lower than that of other ship types, and the trimaran can generate upward lifting force through the arrangement of the additional hydrofoil, so that the aim of increasing speed and reducing drag is fulfilled, the rapidity advantage of the trimaran is more obvious, meanwhile, the additional hydrofoil of the ship body positively improves the wave resistance and the maneuverability of the ship body, the optimization of the ship pitching and heave influence is particularly obvious, and the riding comfort is greatly improved.
The hydrofoil speed boat bottom is provided with hydrofoils, and the weight of the boat body is supported by the hydrodynamic force generated by the hydrofoils, so that the boat body leaves the water surface, thereby reducing the water resistance and improving the navigational speed. However, the hydrofoils of the hydrofoil yacht are immersed in water and are also subject to the action of water friction resistance, so that the navigational speed cannot be greatly improved.
Disclosure of Invention
Aiming at the technical problems in the background technology, the invention provides the super-cavitation hydrofoil trimaran which has the advantages of small sailing resistance, good wave resistance, high riding comfort and high performance.
The invention combines a single hydrofoil quick ship and a supercavitation ship, and designs a novel high-performance supercavitation hydrofoil trimaran. The super-cavitation hydrofoil mechanisms are arranged in front of and behind the ship propulsion device so as to eliminate adverse effects of the super-cavitation phenomenon on the ship propulsion device and make the best use of the super-cavitation phenomenon.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention comprises a main and an auxiliary ship body, wherein the front end of the main ship body is provided with a double-bulb bow, the bottom of the main ship body is provided with a recoverable adjusting hydrofoil and a fixed immersing hydrofoil, cavitation devices are arranged on the two hydrofoils, the rear part of the tail fixed immersing hydrofoil is also provided with a ducted fan type propeller, and the auxiliary ship body is only provided with the fixed immersing hydrofoil.
The double-bulb bow at the front end of the main ship body can reduce the influence of wave making resistance when the ship body sails at high speed, and lays a foundation for the stable supercavitation phenomenon induced by a rear cavitation mechanism.
The invention generates upward lifting force through the recyclable adjusting hydrofoil and the hydrofoil surface of the fixed immersion hydrofoil, the ship body is lifted upwards, the wetting area of the ship body is reduced, and the wave resistance of the ship is improved.
The invention is arranged on the recyclable adjusting hydrofoil and fixed cavitation on the immersed hydrofoil induces supercavitation, the supercavitation and the hydrofoil cooperate to enable a large amount of air bubbles to be attached to the lower surface of the ship body, so that the resistance of the ship body is greatly reduced. The air bubbles are attached to the periphery of the hydrofoil after being generated, so that the lifting force action and the wave resistance of the hydrofoil are promoted more, and the lifting force action and the wave resistance are better.
The propulsion device of the ship is the ducted fan type propeller, adverse effects of supercavitation on propeller blades and efficiency of the front part of the ship body are avoided through the arrangement of the ducted fan type propeller, and the diversion fins and the diversion cover behind the propeller reduce the pressure difference effect of the supercavitation on the propulsion device.
The double-bulb mechanism is located at the bow part, the double-bulb is arranged to be favorable for reducing the influence of wave making resistance on the ship body, compared with the single-bulb mechanism, the double-bulb mechanism is favorable for stably inducing cavitation by the rear Fang Konghua device to reduce the resistance of the ship body during sailing.
The front and rear parts of the bottom of the main hull are respectively provided with a recyclable adjusting hydrofoil and a fixed immersing hydrofoil, the recyclable adjusting hydrofoil and the fixed immersing hydrofoil are respectively used as a head hydrofoil and a tail hydrofoil of the main hull, and the front ends of the recyclable adjusting hydrofoil and the fixed immersing hydrofoil are fixedly provided with supercavitation cavitation devices; the front part of the bottom of the main hull is provided with a hydrofoil recovery cabin, the hydrofoil recovery cabin is used for recovering and adjusting the hydrofoil, and the recoverable and adjustable hydrofoil is arranged in the hydrofoil recovery cabin in a stowable manner through a hydrofoil recovery device.
Specifically, the immersion depth of the tail fixed immersion hydrofoil is deeper than that of the head recoverable adjusting hydrofoil, so that dangerous sailing conditions such as ship turning and the like caused by lifting the head hydrofoil out of the water surface by the bow of the ship during high-speed sailing are prevented.
The hydrofoil surface of the recyclable adjusting hydrofoil is a three-section hydrofoil surface, the three-section hydrofoil surface is connected to a hydrofoil recycling device through a hydrofoil connecting rod, the hydrofoil connecting rod is of a NACA (non-native organic acid) wing structure, and the surface of the hydrofoil connecting rod is subjected to rough treatment; the three-section type water wing surface is of a non-smooth groove structure, and the grooves are arranged along the direction perpendicular to the advancing direction of the ship body.
The hydraulic control channel is arranged in the hydrofoil connecting rod, and the hydrofoil surface is driven to rotate at different attack angles by the control of the hydraulic control recovery mechanism in the hydrofoil recovery device through the hydraulic control channel.
The ducted fan type propeller comprises a guide cover, a propeller arranged in the guide cover and guide fins arranged on the propeller, wherein the blades of the propeller adopt large inclined escherum, and a hole for quick passing of supercavitation is formed in the blade root of the propeller.
The side body adjusting hydrofoil is arranged on the bottom surface of the tail of the auxiliary ship body, a hydraulic oil cylinder is arranged in the auxiliary ship body, the upper end of the side body adjusting hydrofoil is connected with the output end of the hydraulic oil cylinder through a connecting rod, and the side body adjusting hydrofoil is driven to lift up and down through the hydraulic oil cylinder, so that the folding and unfolding of the side body adjusting hydrofoil are completed.
And the fixed immersed hydrofoil and the recyclable adjusting hydrofoil are both NACA standard foils.
The adjustable wing can better realize speed optimization under different sea conditions, meanwhile, the hydrofoil can be retracted and released, the risk of the ship in a shallow water area or a complex sea area hydrofoil reef can be avoided, and the sailing safety is guaranteed to the greatest extent.
Specifically, the ducted fan type propeller has the advantages that the blade tip of the fan type propeller is limited by a duct, the impact noise is reduced, the induced resistance is reduced, and the efficiency is higher.
Specifically, the guide fin and the guide cover are rear mechanisms of the propulsion device, so that the pressure difference between the front and the rear of the propulsion device is reduced, and adverse effects of the supercavitation on the propeller are prevented. In addition, the steering performance of the ship can be improved, and the working efficiency of the propeller can be greatly improved.
The invention well solves the technical problems in the background technology through the combination of the supercavitation and the hydrofoil, and the cavitation device induces the supercavitation to ensure that the whole surface of the ship body of the ship is covered by the bubbles, so that the ship body is not in direct contact with water, the water resistance is reduced, and the navigational speed is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. the supercavitation technology is applied to the trimaran, so that the medium on the surface of the trimaran is changed into a water-steam mixture (air bubble) from water, even all the air, and the reduction of the fluid density ensures that the drag reduction efficiency is higher, thereby fundamentally and effectively improving the speed of the trimaran.
2. The arrangement of the head hydrofoils and the tail hydrofoils enables the ship to generate upward lifting force, the ship body is lifted upwards, friction between water and the ship body is reduced to a certain extent, the sailing speed of the ship is improved, and adverse effects such as pitching and heaving of the ship body to a large extent are avoided. The hydrofoil recovery device enables the ship to safely navigate in the diving domain and the complex water area.
The cavitation device realizes supercavitation on the upper surface of the hydrofoil and the lower surface of the ship body, and greatly improves the drag reduction (shaking) efficiency of the hydrofoil.
3. The ducted fan type propeller overcomes the adverse effect of supercavitation on the propulsion device, the guide fins and the guide cover improve the propulsion efficiency, and the service life of the propeller is greatly prolonged.
Drawings
FIG. 1 is a front view of a supercavitation hydrofoil trimaran.
Figure 2 is a side view of the main hull of the supercavitation hydrofoil trimaran.
Figure 3 is a side view of the subsidiary hull of the supercavitation hydrofoil trimaran.
Fig. 4 is an enlarged view of a portion of the tail of the main hull of the supercavitation hydrofoil trimaran.
In the figure: 1. the hydraulic wing recovery device comprises a hydrofoil recovery device body, a double-bulb bow body, a front supercavitation cavitation device body, a recoverable adjusting hydrofoil body, a hydrofoil recovery cabin body, a rear supercavitation cavitation device body, a fixed immersion hydrofoil body, a propeller body, a guide fin body, a guide cover body, a guide fin body, a guide vane body, a ship rudder body, a hydrofoil connecting rod body, a hydraulic oil cylinder body and a side body adjusting hydrofoil body.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in figure 1, the implementation of the invention comprises a main hull and two auxiliary hulls on two sides, wherein the front end of the main hull is provided with a double-bulb bow 2, the bottom of the main hull is provided with a recyclable adjusting hydrofoil and a fixed immersing hydrofoil, the two hydrofoils are both provided with cavitation devices, the rear part of the tail part of the fixed immersing hydrofoil is provided with a ducted fan type propeller, and the auxiliary hull is only provided with the fixed immersing hydrofoil.
As shown in fig. 2, the front and rear parts of the bottom of the main hull are respectively provided with a recyclable adjusting hydrofoil 4 and a fixed immersing hydrofoil 7, the recyclable adjusting hydrofoil 4 and the fixed immersing hydrofoil 7 are respectively used as a head hydrofoil and a tail hydrofoil of the main hull, the front ends of the recyclable adjusting hydrofoil 4 and the fixed immersing hydrofoil 7 are respectively fixedly provided with a front supercavitation cavitation device 3 and a rear supercavitation device 6, and the front supercavitation cavitation device 3 and the rear supercavitation device 6 induce to generate stable supercavitation; the cavitation device induces the supercavitation to combine with the lifting force generated by the hydrofoil, so that the speed of the ship body is greatly improved, the immersed hydrofoil depth is shallower than that of the first hydrofoil, and the ship body is stabilized in navigation. The two hydrofoils are connected on the axis of the ship body.
The front part of the bottom of the main hull is provided with a hydrofoil recovery cabin 5, and the recyclable adjusting hydrofoil 4 is retractably arranged in the hydrofoil recovery cabin 5 through the hydrofoil recovery device 1. According to the water wing structure of the specific sea area, the control of the lifting of the ship body can be realized in the sailing process.
As shown in fig. 1, the hydrofoil surface of the recyclable regulated hydrofoil 4 is a three-section hydrofoil surface, the three-section hydrofoil surface is connected to the hydrofoil recycling device 1 through a hydrofoil connecting rod 12, the hydrofoil connecting rod 12 is of a NACA wing-shaped structure, and the surface of the hydrofoil connecting rod 12 is roughened, so that a better ship body following travelling waves can be generated. So as to realize the rapid sailing of the trimaran.
In a specific implementation, the hydrofoil recovery device 1 comprises a hydraulic control recovery mechanism, a control chuck, a locking mechanism and the like. The hydraulic control channel is arranged in the hydrofoil connecting rod 12, and the control of the hydraulic control recovery mechanism in the hydrofoil recovery device 1 drives the wing shape of the hydrofoil surface to rotate at different attack angles through the hydraulic control channel. The control chuck is provided with a gear locking mechanism, the locking device is completed after recovery, and the wing-shaped release can also be locked.
The three-section type water wing surface is of a non-smooth groove structure, grooves are arranged along the direction perpendicular to the advancing direction of the ship body, when the ship sails, the water body and the wing surface generate rolling friction instead of sliding friction, quiet low-speed fluid can exist in the groove surface, the loss of the wing surface is reduced, and the service life of the wing is prolonged.
As shown in fig. 3, a side body adjusting hydrofoil 14 is mounted on the bottom surface of the tail of the auxiliary ship body, a hydraulic oil cylinder 13 is arranged in the auxiliary ship body, the upper end of the side body adjusting hydrofoil 14 is connected with the output end of the hydraulic oil cylinder 13 through a connecting rod, the side body adjusting hydrofoil 14 is driven to adjust through the hydraulic oil cylinder 13, the adjusting comprises up-down adjusting and attack angle changing, and the folding and unfolding of the side body adjusting hydrofoil 13 are completed.
The ducted fan type propeller comprises a guide cover 10, a propeller 8 arranged in the guide cover 10 and guide fins 9 arranged on the propeller 8, the influence of supercavitation on the propeller 8 is eliminated through the guide fins 9 and the guide cover 10, the blades of the propeller 8 adopt large oblique escherum, and a hole for the supercavitation to pass through rapidly is formed in the blade root of the propeller 8.
The bottom of the main hull is provided with a fixed immersed hydrofoil 7 (tail hydrofoil) and a recyclable regulating hydrofoil 4 (head hydrofoil), when the ship sails, the head hydrofoil provides upward lift force for the ship, the tail main hydrofoil better solves the problem of draft depth at the tail of the hull, and adverse effects such as pitching and heaving of the hull to a large extent are avoided.
The cavitation device in front of the hydrofoil generates supercavitation, so that the supercavitation phenomenon is realized on the upper surface of the hydrofoil and the lower surface of the ship body, and the drag reduction (shaking) efficiency of the hydrofoil is greatly improved.
The ship propulsion device is a large inclined seven-blade duct fan type propeller, a hole is drilled at the blade root of the propeller, and the guide edge is slightly tilted upwards at the blade root so as to reduce the local negative attack angle. The guide fins and the guide cover are arranged behind the propeller, so that the propeller eliminates the influence of supercavitation, and the service life and the efficiency of the propulsion device are improved.
Claims (6)
1. The utility model provides a supercavitation hydrofoil trimaran, includes main vice hull, its characterized in that: the front end of the main hull is provided with a double-bulb bow (2), the bottom of the main hull is provided with a recyclable adjusting hydrofoil and a fixed immersing hydrofoil, cavitation devices are arranged on the two hydrofoils, the rear part of the tail fixed immersing hydrofoil is also provided with a ducted fan type propeller, and the tail of the auxiliary hull is only provided with the fixed immersing hydrofoil;
the front and the back of the bottom of the main hull are respectively provided with a recyclable adjusting hydrofoil (4) and a fixed immersion hydrofoil (7), and the front ends of the recyclable adjusting hydrofoil (4) and the fixed immersion hydrofoil (7) are respectively fixedly provided with a front supercavitation cavitation device (3) and a rear supercavitation device (6); the front part of the bottom of the main hull is provided with a hydrofoil recovery cabin (5), and the recyclable adjusting hydrofoil (4) is arranged in the hydrofoil recovery cabin (5) in a storable manner through the hydrofoil recovery device (1);
the fixed immersion foils (7) of the tail are immersed deeper than the recoverable regulation foils (4) of the head.
2. A supercavitation hydrofoil trimaran according to claim 1, characterized in that: the hydrofoil surface of the recyclable adjusting hydrofoil (4) is a three-section hydrofoil surface, the three-section hydrofoil surface is connected to the hydrofoil recycling device (1) through a hydrofoil connecting rod (12), the hydrofoil connecting rod (12) is of a NACA (non-native organic acid) wing structure, and the surface of the hydrofoil connecting rod (12) is subjected to rough treatment; the three-section type water wing surface is of a non-smooth groove structure, and the grooves are arranged along the direction perpendicular to the advancing direction of the ship body.
3. A supercavitation hydrofoil trimaran according to claim 2, characterized in that: a hydraulic control channel is arranged in the hydrofoil connecting rod (13), and the hydrofoil surface is driven to rotate at different attack angles by the control of a hydraulic control recovery mechanism in the hydrofoil recovery device (1) through the hydraulic control channel.
4. A supercavitation hydrofoil trimaran according to claim 1, characterized in that: the ducted fan type propeller comprises a guide cover (10), a propeller (8) arranged in the guide cover (10) and guide fins (9) arranged on the propeller (8), wherein the blades of the propeller (8) adopt large inclined escherum, and a hole for quick passing of supercavitation is formed in the blade root of the propeller (8).
5. A supercavitation hydrofoil trimaran according to claim 1, characterized in that: the side body adjusting hydrofoil (13) is arranged on the bottom surface of the tail of the auxiliary ship body, a hydraulic oil cylinder (14) is arranged in the auxiliary ship body, the upper end of the side body adjusting hydrofoil (13) is connected with the output end of the hydraulic oil cylinder (14) through a connecting rod, the side body adjusting hydrofoil (13) is driven to lift up and down through the hydraulic oil cylinder (14), and the folding and unfolding of the side body adjusting hydrofoil (13) are completed.
6. A supercavitation hydrofoil trimaran according to claim 1, characterized in that: and the fixed immersed hydrofoil (7) and the recyclable adjusting hydrofoil (4) are both NACA standard airfoils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403681.XA CN107150760B (en) | 2017-06-01 | 2017-06-01 | Supercavitation hydrofoil trimaran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403681.XA CN107150760B (en) | 2017-06-01 | 2017-06-01 | Supercavitation hydrofoil trimaran |
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| Publication Number | Publication Date |
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| CN107150760A CN107150760A (en) | 2017-09-12 |
| CN107150760B true CN107150760B (en) | 2023-10-10 |
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| CN201710403681.XA Active CN107150760B (en) | 2017-06-01 | 2017-06-01 | Supercavitation hydrofoil trimaran |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107719578B (en) * | 2017-11-09 | 2023-11-07 | 舟山市定海兴舸船舶设计有限公司 | Trimaran |
| CN108482575A (en) * | 2018-03-25 | 2018-09-04 | 哈尔滨工程大学 | A kind of adjustable hydrofoil unit peculiar to vessel |
| CN108407967A (en) * | 2018-04-09 | 2018-08-17 | 五洋纵横（北京）科技有限公司 | A kind of trimaran |
| CN108327844A (en) * | 2018-04-10 | 2018-07-27 | 山东大学 | Flange plate type auxiliary propulsion ship |
| JP7195795B2 (en) * | 2018-07-20 | 2022-12-26 | 三菱造船株式会社 | vessel |
| CN112238921A (en) * | 2019-07-17 | 2021-01-19 | 章洪 | Supercavitation hydrofoil ship |
| CN110615061B (en) * | 2019-09-16 | 2021-10-19 | 哈尔滨工程大学 | High-speed warship with supercavitation |
| CN112693585B (en) * | 2021-01-15 | 2021-10-29 | 中国船舶科学研究中心 | Device for improving root cavitation of propeller for high-speed ship and using method thereof |
| JP7199585B1 (en) * | 2022-05-10 | 2023-01-05 | 勉 桐山 | ocean current trimaran |
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| CN107150760A (en) | 2017-09-12 |
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