CN113879453A - Shield scale tile-covering type resistance-reducing noise-reducing skin based on micro Stewart mechanism - Google Patents
Shield scale tile-covering type resistance-reducing noise-reducing skin based on micro Stewart mechanism Download PDFInfo
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- CN113879453A CN113879453A CN202111218655.2A CN202111218655A CN113879453A CN 113879453 A CN113879453 A CN 113879453A CN 202111218655 A CN202111218655 A CN 202111218655A CN 113879453 A CN113879453 A CN 113879453A
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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
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/13—Hulls built to withstand hydrostatic pressure when fully submerged, e.g. submarine hulls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
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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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- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention provides a shield scale covering type drag reduction and noise reduction skin based on a micro Stewart mechanism, which is used for reducing fluid resistance and noise generated by an underwater vehicle in a sailing process. The invention relates to a skin which is formed by arranging a plurality of micro Stewart shield scale units in a covering tile mode and has the functions of reducing drag and noise. The micro Stewart scale unit comprises bionic scale scales, an upper platform, an upper connecting hinge, elastic supporting legs, a lower connecting hinge and a lower platform. The bionic scale scales are fixed on the upper end surface of the upper platform, and the elastic supporting legs are respectively fixed with the upper platform and the lower platform through upper connecting hinges and lower connecting hinges. The invention can well simulate the state that the shark placoid scales have semi-closed space in a flow field to eject fluid, contain transversely flowing fluid and can move in multiple dimensions, thereby effectively reducing fluid resistance and hydrodynamic noise. In addition, the invention can well inhibit the reflection and transmission of external noise inside and outside the underwater vehicle, thereby realizing the silencing (sound hiding) function.
Description
Technical Field
The invention relates to an underwater vehicle skin, in particular to a shield scale covering type drag reduction and noise reduction skin based on a micro Stewart mechanism, which can realize fluid drag reduction and noise reduction functions of an underwater vehicle.
Background
With the development of science and technology and the increasing demand of national strategy, higher requirements are put on the rapidity and the concealment of the underwater vehicle. Therefore, how to improve the resistance and noise reduction performance of the underwater vehicle becomes a research hotspot in the field of ship machinery design and manufacture.
In recent years, with the continuous and deep exploration of nature by human beings, the bionic surface drag reduction technology is rapidly developed and widely applied. Among them, sharks have become important research objects in drag reduction bionics due to their rapidity and invisibility in swimming in water. The shark has the characteristics of quick and flexible swimming, and is greatly related to the pellagra covered on the body surface of the shark. The groove structure on the surface of the shield scale can improve the fluid structure and the flow state of a turbulent boundary layer, thereby effectively reducing the water resistance and obtaining extremely high swimming speed. Therefore, researchers design a groove drag reduction structure by imitating a shark scull, and apply the groove drag reduction structure to drag reduction and noise reduction of surfaces of equipment such as airplanes and ships. The shark can swim rapidly and flexibly, and besides the groove structure of the pellagra per se, the shark also has the reason of the tile-covering arrangement of the pellagra on the body surface. The shield scales are arranged in a tile-covering manner to form a semi-closed space, so that fluid can be ejected to reduce the distortion degree of fluid pressure in a boundary layer, and the fluid flowing transversely can be accommodated to balance the pressure difference formed by the ejection of the fluid, thereby being beneficial to reducing the fluid resistance.
However, the existing bionic shield scales are basically in a groove structure on the surface of the shark shield scale which is textured in an incising processing mode, and the resistance reduction effect generated by the multi-degree-of-freedom motion form of the shark shield scale and a semi-closed space formed by the shark shield scale arranged in a tile covering mode is neglected, so that the resistance reduction capability is far lower than the level of the shark when the shark swims in a natural environment.
Disclosure of Invention
The invention aims to provide a shield scale tile type drag reduction and noise reduction skin based on a micro Stewart mechanism for reducing fluid resistance and noise generated by an underwater vehicle during sailing.
The purpose of the invention is realized as follows: the device comprises micro Stewart scale units, wherein the micro Stewart scale units are arranged and fixed on an underwater vehicle shell in a covering tile manner, each micro Stewart scale unit comprises a Stewart platform and a bionic scale, a lower platform of the Stewart platform is arranged on the underwater vehicle shell, and the bionic scale is arranged on an upper platform of the Stewart platform.
Furthermore, the bionic scutellum is made of organic polymer materials according to the appearance of the surface of the scutellum of the shark epidermis.
Further, the Stewart platform comprises an upper platform, upper connecting hinges, elastic supporting legs, lower connecting hinges and a lower platform, wherein the lower end face of the upper platform is uniformly provided with 3 pairs of upper connecting hinges around the central axis of the upper platform, the upper end face of the lower platform is uniformly provided with 3 pairs of lower connecting hinges around the central axis of the lower platform, the vertical projection of each pair of upper connecting hinges is positioned between the two adjacent pairs of lower connecting hinges, and the two ends of each elastic supporting leg are respectively fixed with the adjacent upper connecting hinge and the adjacent lower connecting hinge.
Further, the upper platform, the lower platform and the connecting hinge are made of metal materials, and the elastic supporting legs are made of springs or organic polymer materials with elasticity.
Further, the upper end face of the upper platform is provided with an inclined angle.
Compared with the prior art, the invention has the beneficial effects that:
1. the bionic scale scales can control a turbulent flow coherent structure, and reduce turbulent flow momentum exchange in a boundary layer, so that the fluid resistance and noise generated by the underwater vehicle in the navigation process are reduced;
2. the micro Stewart shield scale unit belongs to a parallel six-degree-of-freedom mechanism, can well simulate the multi-dimensional motion form of shark shield scale, has strong attenuation effect on vibration elastic waves, and further can effectively weaken the excitation of turbulence on the surface of the shark shield scale and shell vibration, thereby realizing the fluid noise reduction function.
3. The semi-closed space formed by the micro Stewart shield scale units arranged in a tile covering manner can eject fluid to reduce the distortion degree of fluid pressure in a boundary layer, and can contain transversely flowing fluid to balance the pressure difference formed by ejection of the fluid, thereby being beneficial to reducing the fluid resistance.
4. The unique periodic structure and the acoustic characteristics formed by the materials can well inhibit the reflection and transmission of external noise sources inside and outside the underwater vehicle, thereby realizing the silencing (sound hiding) function.
5. The parameters of the micro Stewart shield scale unit such as rigidity, damping and quality can be formulated according to the actual use environment to obtain the skin with specific structural parameters, and the skin has good adaptability to the use environment, so that the fluid drag reduction and noise reduction functions can be better realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic representation of the micro Stewart scale cell of FIG. 1;
FIG. 3 is a schematic of the drag reducing characteristics of the present invention;
FIG. 4 is a schematic representation of the drag reduction characteristics of the micro Stewart scale units of the present invention;
FIG. 5 is a schematic illustration of the noise reduction characteristics of the present invention;
FIG. 6 is a schematic representation of the noise reduction characteristics of the micro Stewart scale units of the present invention.
The reference numbers illustrate: 1. the method comprises the following steps of a micro Stewart shield scale unit 2, an underwater vehicle shell 3, a bionic shield scale 4, an upper platform 5, an upper connecting hinge 6, an elastic supporting leg 7, a lower connecting hinge 8, a lower platform 9, a shield scale covering type drag reduction noise reduction skin 10 based on a micro Stewart mechanism, turbulence excitation 11, a counter-rotating vortex pair 12, a second vortex group 13, a velocity gradient 14, hydrodynamic noise 15, external noise (active sonar) 16, and noise inside a cabin (mechanical equipment noise and the like).
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The technical scheme of the invention is as follows: a shield scale tile-covering type resistance-reducing noise-reducing skin based on a micro Stewart mechanism comprises a plurality of micro Stewart shield scale units. The multiple micro Stewart scale units are fixed on the underwater vehicle shell according to a shingled arrangement. The micro Stewart shield scale unit comprises bionic shield scale scales, an upper platform, an upper connecting hinge, elastic supporting legs, a lower connecting hinge and a lower platform. The bionic scale is fixed on the upper end face of the upper platform. The terminal surface evenly is provided with 3 pairs of upper connecting hinge around its central axis under the upper mounting plate. The upper end face of the lower platform is uniformly provided with 3 pairs of lower connecting hinges around the central axis. The vertical projection of each pair of upper connecting hinges is positioned between the two adjacent pairs of lower connecting hinges. And two ends of each elastic supporting leg are respectively fixed with the adjacent upper and lower connecting hinges. The bionic scale is obtained by imitating the surface appearance of shark skin scale and is made of an organic polymer material, such as a polyurethane material; the upper platform, the lower platform and the connecting hinge are made of metal materials, such as aluminum alloy, and the elastic supporting legs are made of springs or elastic organic polymer materials and can be made of rubber materials; the upper platform and the lower platform are regular triangular prisms, and the upper end face of the upper platform has a certain inclination angle; the connecting hinge and the elastic supporting leg are cylinders.
As shown in FIG. 1, the small Stewart mechanism-based drag-reducing and noise-reducing scudding comprises a plurality of small Stewart scale units 1. And (3) fixing a plurality of micro Stewart scale units 1 on an underwater vehicle shell 2 according to a covering tile type arrangement to form a skin with the functions of reducing drag and noise.
The micro Stewart scale unit 1 is described in detail with reference to fig. 2: the micro Stewart scale unit 1 comprises 1 bionic scale 3, 1 upper platform 4, 3 pairs of upper connecting hinges 5, 6 elastic supporting legs 6, 3 pairs of lower connecting hinges 7 and 1 lower platform 8. The bionic scale 3 is prepared by adopting a polyurethane material according to the surface appearance of shark skin scale, and is fixed on the upper end surface of the upper platform 4 through a strong glue. It should be noted that, in order to ensure that the bionic placoid scale scales 3 are arranged in a tile-covering manner and then reconstruct the shark placoid scale tile-covering structure to the maximum extent, the upper end face of the upper platform 4 has a certain inclination angle. Three round corner positions of the lower end surface of the upper platform 4 are fixed with 3 pairs of upper connecting hinges 5 through strong glue, and the distance from each upper connecting hinge 5 to the central axis of the upper platform 4 is equal. Three round corner positions of the upper end surface of the lower platform 8 are fixed with 3 pairs of lower connecting hinges 7 through super glue, and the distance from each lower connecting hinge 7 to the central axis of the lower platform 8 is equal. The vertical projection of each pair of upper connecting hinges 5 is located between two adjacent pairs of lower connecting hinges 7. Two ends of the elastic supporting leg 6 are fixedly connected with the adjacent upper connecting hinge 5 and the lower connecting hinge 7 through strong glue respectively to form the micro Stewart shield scale unit 1 shown in figure 2.
The drag reduction characteristics of the present invention are illustrated with reference to fig. 3 and 4: a shield scale tile-covering type drag reduction and noise reduction skin 9 based on a micro Stewart mechanism is fixed on the surface of an underwater vehicle shell 2, when the skin is subjected to the action of turbulence excitation 10, a groove structure on the surface of a micro Stewart shield scale unit 1 interacts with a reverse rotating vortex pair 11 in fluid to generate a second vortex group 12, the strength of the reverse rotating vortex pair 11 can be weakened, accordingly, the burst of turbulence is inhibited, momentum exchange in a turbulence boundary layer is weakened, and fluid resistance is further reduced. In addition, the semi-closed space formed by the micro Stewart shield scale units 1 arranged in a tile-covering manner can eject fluid to reduce the distortion degree of fluid pressure in a boundary layer, can contain transversely flowing fluid to balance the pressure difference formed by the ejection of the fluid, and is also favorable for reducing fluid resistance.
The noise reduction characteristics of the present invention will be described with reference to fig. 5 and 6: a shield scale covering type drag reduction and noise reduction skin 9 based on a micro Stewart mechanism is fixed on the surface of the underwater vehicle shell 2. In the navigation process of the underwater vehicle, the groove structure on the surface of the micro Stewart shield scale unit 1 can effectively reduce the speed gradient 13 of a turbulent boundary layer and prevent the generation of transverse flow, so that the turbulent momentum exchange in the whole boundary layer is reduced, the flow stability in the boundary layer is enhanced, and the effect of weakening hydrodynamic noise 14 is achieved. In addition, by using the unique periodic structure formed by the skin and the acoustic characteristics formed by the material, the reflection and transmission of external noise (active sonar) 15 and cabin internal noise (mechanical equipment noise and the like) 16 can be inhibited, so that the effects of noise elimination and sound insulation are achieved.
It should be particularly noted that relevant structural parameters (rigidity, damping, mass and the like) of the micro Stewart shield scale unit 1 can be formulated according to the actual use environment to obtain a skin with specific structural parameters, and the skin has good adaptability to the use environment, so that the fluid drag reduction and noise reduction functions can be better realized.
In conclusion, the bionic reconstruction method is used for bionic reconstruction of a tile-covered structure of the shark skin placoid scale, and can reappear the forms that the shark placoid scale has a semi-closed space in a flow field to eject fluid, contains transversely flowing fluid and can move in multiple dimensions, so that response is made to turbulence excitation and internal and external noise, and the effect of reducing the surface fluid resistance and noise of an underwater vehicle is achieved.
In conclusion, the invention provides a shield scale covering type drag reduction and noise reduction skin based on a micro Stewart mechanism, which is used for reducing fluid resistance and noise generated by an underwater vehicle in a sailing process. The invention relates to a skin which is formed by arranging a plurality of micro Stewart shield scale units in a covering tile mode and has the functions of reducing drag and noise. The micro Stewart scale unit comprises bionic scale scales, an upper platform, an upper connecting hinge, elastic supporting legs, a lower connecting hinge and a lower platform. The bionic scale scales are fixed on the upper end surface of the upper platform, and the elastic supporting legs are respectively fixed with the upper platform and the lower platform through upper connecting hinges and lower connecting hinges. The invention can well simulate the state that the shark placoid scales have semi-closed space in a flow field to eject fluid, contain transversely flowing fluid and can move in multiple dimensions, thereby effectively reducing fluid resistance and hydrodynamic noise. In addition, the invention can well inhibit the reflection and transmission of external noise inside and outside the underwater vehicle, thereby realizing the silencing (sound hiding) function.
Claims (6)
1. The utility model provides a shield scale covers formula drag reduction and noise reduction covering based on little Stewart mechanism which characterized in that: the device comprises micro Stewart scale units, wherein the micro Stewart scale units are arranged and fixed on an underwater vehicle shell in a covering tile manner, each micro Stewart scale unit comprises a Stewart platform and a bionic scale, a lower platform of the Stewart platform is arranged on the underwater vehicle shell, and the bionic scale is arranged on an upper platform of the Stewart platform.
2. The micro Stewart mechanism-based drag-reducing and noise-reducing shield scale-covering skin as claimed in claim 1, wherein: the bionic scale is made of organic polymer materials according to the appearance of the surface of the shark skin scale.
3. The drag-reducing and noise-reducing shield scale tile-covering skin based on the micro Stewart mechanism as claimed in claim 1 or 2, wherein: the Stewart platform comprises an upper platform, upper connecting hinges, elastic supporting legs, lower connecting hinges and a lower platform, wherein the lower end face of the upper platform is uniformly provided with 3 pairs of upper connecting hinges around the central axis of the upper platform, the upper end face of the lower platform is uniformly provided with 3 pairs of lower connecting hinges around the central axis of the lower platform, the vertical projection of each pair of upper connecting hinges is positioned between the adjacent two pairs of lower connecting hinges, and the two ends of each elastic supporting leg are respectively fixed with the adjacent upper connecting hinge and the adjacent lower connecting hinge.
4. The micro Stewart mechanism-based drag-reducing and noise-reducing shield scale-covering tile-type skin as claimed in claim 3, wherein: the upper platform, the lower platform and the connecting hinge are made of metal materials, and the elastic supporting legs are made of springs or elastic organic polymer materials.
5. The micro Stewart mechanism-based drag-reducing and noise-reducing shield scale-covering tile-type skin as claimed in claim 3, wherein: the upper end surface of the upper platform is provided with an inclined angle.
6. The micro Stewart mechanism-based drag-reducing and noise-reducing shield scale-covering tile-type skin as claimed in claim 4, wherein: the upper end surface of the upper platform is provided with an inclined angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111218655.2A CN113879453B (en) | 2021-10-20 | 2021-10-20 | Shield scale tile-covering type resistance-reducing noise-reducing skin based on micro Stewart mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111218655.2A CN113879453B (en) | 2021-10-20 | 2021-10-20 | Shield scale tile-covering type resistance-reducing noise-reducing skin based on micro Stewart mechanism |
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| CN113879453A true CN113879453A (en) | 2022-01-04 |
| CN113879453B CN113879453B (en) | 2023-03-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801358A (en) * | 2022-04-29 | 2022-07-29 | 吉林大学 | Bionic dynamic allosteric skin of underwater vehicle with intelligent self-adaptive drag reduction |
| CN117208182A (en) * | 2023-08-08 | 2023-12-12 | 中国船舶集团有限公司第七一九研究所 | Unmanned submarine rudder noise reduction equipment and application method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2757440A1 (en) * | 1996-12-20 | 1998-06-26 | Conservatoire Nat Arts | Platform with hexapod telescopic legs for use with machine tools |
| CN101913407A (en) * | 2010-07-16 | 2010-12-15 | 北京航空航天大学 | Manufacture method of transformative shark-simulation anti-drag skin based on adjustable surface appearance and size |
| CN104613285A (en) * | 2015-01-27 | 2015-05-13 | 北京航空航天大学 | Large dynamic cubic Stewart active vibration control platform |
| CN105094165A (en) * | 2015-08-24 | 2015-11-25 | 华中科技大学 | Stewart active platform and a vibration abatement method based on the Stewart active platform |
| CN106043591A (en) * | 2016-06-14 | 2016-10-26 | 山东理工大学 | Drag reduction device used for water surface and underwater vehicle and manufacturing method of drag reduction device |
| CN108557043A (en) * | 2018-03-15 | 2018-09-21 | 哈尔滨工程大学 | A kind of micro- buoyant raft array covering with reducing noise and drag function |
| CN109606532A (en) * | 2018-12-19 | 2019-04-12 | 哈尔滨工程大学 | Fluid drag-reduction noise reduction intelligent skin structure based on magnetorheological elastic material |
| CN110481740A (en) * | 2019-08-26 | 2019-11-22 | 哈尔滨工程大学 | Micro- buoyant raft fluid drag-reduction noise reduction covering based on waveguide mechanism |
-
2021
- 2021-10-20 CN CN202111218655.2A patent/CN113879453B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2757440A1 (en) * | 1996-12-20 | 1998-06-26 | Conservatoire Nat Arts | Platform with hexapod telescopic legs for use with machine tools |
| CN101913407A (en) * | 2010-07-16 | 2010-12-15 | 北京航空航天大学 | Manufacture method of transformative shark-simulation anti-drag skin based on adjustable surface appearance and size |
| CN104613285A (en) * | 2015-01-27 | 2015-05-13 | 北京航空航天大学 | Large dynamic cubic Stewart active vibration control platform |
| CN105094165A (en) * | 2015-08-24 | 2015-11-25 | 华中科技大学 | Stewart active platform and a vibration abatement method based on the Stewart active platform |
| CN106043591A (en) * | 2016-06-14 | 2016-10-26 | 山东理工大学 | Drag reduction device used for water surface and underwater vehicle and manufacturing method of drag reduction device |
| CN108557043A (en) * | 2018-03-15 | 2018-09-21 | 哈尔滨工程大学 | A kind of micro- buoyant raft array covering with reducing noise and drag function |
| CN109606532A (en) * | 2018-12-19 | 2019-04-12 | 哈尔滨工程大学 | Fluid drag-reduction noise reduction intelligent skin structure based on magnetorheological elastic material |
| CN110481740A (en) * | 2019-08-26 | 2019-11-22 | 哈尔滨工程大学 | Micro- buoyant raft fluid drag-reduction noise reduction covering based on waveguide mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801358A (en) * | 2022-04-29 | 2022-07-29 | 吉林大学 | Bionic dynamic allosteric skin of underwater vehicle with intelligent self-adaptive drag reduction |
| CN117208182A (en) * | 2023-08-08 | 2023-12-12 | 中国船舶集团有限公司第七一九研究所 | Unmanned submarine rudder noise reduction equipment and application method thereof |
| CN117208182B (en) * | 2023-08-08 | 2024-03-08 | 中国船舶集团有限公司第七一九研究所 | Unmanned submarine rudder noise reduction equipment and application method thereof |
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