CN117302480A - Unmanned submarine stern rudder noise reduction device and application method thereof - Google Patents
Unmanned submarine stern rudder noise reduction device and application method thereof Download PDFInfo
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- CN117302480A CN117302480A CN202310989195.6A CN202310989195A CN117302480A CN 117302480 A CN117302480 A CN 117302480A CN 202310989195 A CN202310989195 A CN 202310989195A CN 117302480 A CN117302480 A CN 117302480A
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Classifications
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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
- B63G8/14—Control of attitude or depth
- B63G8/18—Control of attitude or depth by hydrofoils
-
- 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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- 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
- B63G8/28—Arrangement of offensive or defensive equipment
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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
- B63G2008/002—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations unmanned
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention provides a noise reduction device for a stern rudder of an unmanned submarine and a use method thereof, wherein a cover shell is covered on the surface of a stern rudder shell; the memory deformation piece deforms along with the temperature change and has an initial state and at least one deformation state; the memory deformation piece is arranged between the shell and the housing, one end of the memory deformation piece is fixedly arranged on the shell, the other end of the memory deformation piece is fixedly connected to the edge of one side of the housing in the extending direction, the memory deformation piece is heated and deformed to be switched into a deformation state, and the connecting end of the memory deformation piece and the housing is far away from the connecting end of the memory deformation piece and the shell; the distance between the most far end of the housing far away from the housing surface and the housing surface changes along with the shape change of the memory deformation piece; the casing is driven to move by taking various memory alloys as memory deformation pieces, so that the height of the casing outside the casing is changed, and the depth and the shape of the groove can be adjusted according to the needs as the groove is clamped between the two casings, thereby being applicable to different navigational speed requirements and maintaining stable noise reduction effects.
Description
Technical Field
The invention relates to the technical field of aircraft stern rudders, in particular to an unmanned submarine stern rudders noise reduction device and a use method thereof.
Background
The intensity of hydrodynamic noise of an underwater vehicle is not only highly correlated to the speed of the voyage, but is also affected by the geometry of the vehicle. Due to the operational stability, penetration and structural strength and other functional requirements of the underwater vehicle, the geometry of the outer shell of the underwater vehicle is not a regular revolving body, and most of the underwater vehicle is a long and thin revolving body with a plurality of protruding body structures, wherein wing-shaped or wing-like protruding bodies occupy the main parts, such as the stern rudder of the underwater vehicle and the like. Due to the influence of a plurality of factors such as limited extension length of the protruding body, flow separation at the tail end, transverse flow at the joint of the protruding body and the main boat body and the like, the turbulence of the flow field around the underwater vehicle is aggravated, so that the strength of hydrodynamic noise is greatly improved, and therefore, the reduction of hydrodynamic noise of protruding body structures such as stern rudders and the like is an important way for improving the sound stealth performance of the underwater vehicle.
The technical personnel find through long-term research that grooves with specific intervals and heights can be laid on the stern rudder as shown in fig. 1, so that the flow field state of the housing around the stern rudder or the bow rudder of the underwater vehicle is effectively improved, the flow excitation vibration of the housing is weakened, and the hydrodynamic noise of the underwater vehicle is reduced.
However, the grooves laid on the existing stern rudders are all fixed, so that the noise reduction effect of the grooves can be obviously reduced only for a specific navigational speed, and when the navigational speed of the underwater vehicle is increased or reduced, the noise reduction effect of the grooves can be obviously reduced, and the stable noise reduction effect is difficult to maintain.
Disclosure of Invention
In view of the above, the invention provides a noise reduction device for a stern rudder of an unmanned underwater vehicle and a use method thereof, which are used for solving the problems that the grooves laid on the stern rudder are all fixed, so that the noise reduction device only has obvious noise reduction effect on a specific navigational speed, and when the navigational speed of the underwater vehicle is increased or reduced, the noise reduction effect of the grooves is obviously reduced, and the stable noise reduction effect is difficult to maintain.
The technical scheme of the invention is realized as follows: the invention provides a noise reduction device of a stern rudder of an unmanned submarine, which is arranged on a shell of the stern rudder, and comprises a housing, wherein the housing is arranged on the surface of the shell; a memory deformation member which deforms along with temperature change and has an initial state and at least one deformation state; the memory deformation piece is arranged between the shell and the housing, one end of the memory deformation piece is fixedly arranged on the shell, the other end of the memory deformation piece is fixedly connected to the edge of one side of the extending direction of the housing, the memory deformation piece is heated and deformed to be switched into a deformation state, and the connecting end of the memory deformation piece and the housing is far away from the connecting end of the memory deformation piece and the shell; the spacing of the distal-most end of the housing from the housing surface varies as the shape of the memory deforming member varies.
On the basis of the technical scheme, the memory deformation device preferably further comprises a heating part which is arranged in the shell and used for heating the memory deformation device.
Still more preferably, the section of the substrate of the memory deformation member comprises a memory alloy layer and a heating layer, the memory alloy layer and the heating layer are layered and overlapped, and the heating layer is made of carbon nanofiber materials.
Still more preferably, memory deformation pieces are arranged between the edges of the two sides of the extending direction of the housing and the housing, and the housing is made of metal materials; the heating part is a power supply, and the anode and the cathode of the power supply are respectively connected with the two heating layers.
On the basis of the technical scheme, preferably, a cavity groove is formed in the shell; the edge of at least one side of the extending direction of the housing is inserted into the cavity; the memory deformation piece is arranged in the cavity groove, and two ends of the memory deformation piece are respectively connected with the edge of the housing inserted into the cavity groove and the end part of the cavity groove far away from the surface of the shell.
Still more preferably, the device further comprises a holding block; wherein, a channel is also arranged in the shell, and two ends of the channel are respectively communicated between one end of the cavity facing the surface of the shell and the external environment; the side edge of the cover shell in the extending direction passes through the channel and is inserted into the cavity; the supporting block is arranged on the inner wall of the channel and moves relative to the housing, and moves towards the housing and clamps the housing between the supporting block and the inner wall of the channel, or moves away from the housing and releases the housing.
Based on the technical proposal, preferably, the cover is used for covering the housing; the two ends of the skin are arranged on the shell and positioned on two sides of the extending direction of the housing, the skin is clung to the surface of the housing far away from the shell, and the skin has elastic stretching performance.
Still more preferably, the apparatus further comprises a reel mechanism; wherein, at least one cavity is arranged in the shell and is arranged at one side of the extending direction of the housing; the winding drum mechanism is arranged in the cavity; the side edges of the skin in the direction of extension of the cover are inserted into the cavity through the housing surface and wound onto the reel mechanism.
On the other hand, the invention also provides a using method of the unmanned submarine stern rudder noise reduction device, which comprises the following steps that firstly, a memory deformation piece is in an initial state, and a heating part is powered off; step two, the heating part is powered on, the heating layer is powered on and heats the memory alloy layer, the memory deformation piece is heated and deformed to be switched to a deformation state, and the distance between the furthest end of the housing far away from the surface of the housing and the surface of the housing is increased; and thirdly, the heating part is powered off, the memory deformation part is cooled and deformed to restore to the initial state, and the distance between the furthest end of the housing far away from the surface of the housing and the surface of the housing is reduced.
On the basis of the technical scheme, preferably, in the second step, the distance between the furthest end of the housing, which is far away from the surface of the housing, and the surface of the housing is increased, and the skin is elastically stretched to drive the winding drum mechanism to release the skin; in the third step, after the memory deformation piece is cooled, the winding drum mechanism rolls back the skin, the skin extrudes the housing, so that the distance between the furthest end of the housing, far away from the surface of the housing, and the surface of the housing is reduced, and the memory deformation piece is compressed and reset to an initial state.
Compared with the prior art, the unmanned submarine stern rudder noise reduction device and the using method thereof have the following beneficial effects:
(1) According to the invention, the multiple memory alloy is used as the memory deformation piece to drive the cover shells to move, so that the height of the cover shells outside the shell is changed, and the depth and the shape of the groove can be adjusted according to the needs because the groove is clamped between the two cover shells, so that the device is suitable for different navigational speed requirements, and stable noise reduction effect is maintained.
(2) According to the invention, the heating part is connected with the heating layers of the two memory deformation pieces through the power supply, and the metal housing is used as the conductor, so that the two memory deformation pieces can be heated, and the deformation amounts of the memory deformation pieces at the two sides of the housing are ensured to be the same.
(3) According to the invention, the supporting part and the inner wall of the channel clamp the housing, so that the height of the housing outside the housing is still unchanged after the power supply of the heating part is disconnected.
(3) According to the invention, the cover is covered by the cover, so that the cover is prevented from directly contacting with water, and the memory deformation piece can be compressed to be in an initial state by elastic resilience of the cover after the memory deformation piece is cooled.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an application scenario of an unmanned submarine stern rudder noise reduction device according to the invention;
FIG. 2 is a schematic diagram of the unmanned submersible stern rudder noise reduction device of the invention;
FIG. 3 is a schematic front cross-sectional view of an initial state of the unmanned submersible stern rudder noise reduction device of the invention;
FIG. 4 is a schematic front cross-sectional view of the deformation state of the unmanned submersible stern rudder noise reduction device of the invention;
FIG. 5 is an enlarged view of FIG. 3A in accordance with the present invention;
FIG. 6 is a cross-sectional view of a substrate of a memory deformation member of the present invention.
In the figure: 1. a housing; 101. a cavity groove; 102. a channel; 103. a cavity; 2. a housing; 3. a memory deformation member; 31. a memory alloy layer; 32. a heating layer; 4. a heating section; 5. a holding block; 6. a skin; 7. a reel mechanism.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Example 1
As shown in fig. 1, in combination with fig. 2 and 3, the noise reduction device for the stern rudder of the unmanned submersible vehicle is arranged on a shell 1 of the stern rudder and comprises a housing 2, a memory deformation member 3 and a heating part 4.
Wherein the housing 2 is covered on the surface of the shell 1. The shells 2 are arranged on the surface of the shell 1 at intervals in parallel, and noise reduction grooves are formed between adjacent shells 2. Although the channel-gripping structure may also be a solid structure, a hollow structure such as the hull 2 is used, as it is desirable to reduce the weight of the aircraft as much as possible. In general, the length of the noise reduction grooves is close to that of the stern rudder, the noise reduction grooves are uniformly distributed on the surface of the stern rudder, the distance between each noise reduction groove is 20mm-30mm, the width of each noise reduction groove is about 8mm, and the maximum height of each noise reduction groove is about 12mm; the arrangement distance between the two housings 2 is thus 8mm, whereas the maximum cross-section width of the housings 2 is 20mm-30mm. The distance between the most distal end of the housing 2, which is far from the surface of the housing 1, and the surface of the housing 1 changes with the shape change of the memory deformation member 3, so that the height of the housing 2 at the outer part of the housing 1, i.e., the height of the adjusting groove, is adjusted.
The memory deformation member 3 deforms along with the change of temperature and has an initial state and at least one deformation state. Generally, the memory deformation member 3 has three deformation states to meet the requirements of low, medium and high speeds of the aircraft.
As shown in fig. 1, referring to fig. 6, the substrate section of the memory deformation member 3 includes a memory alloy layer 31 and a heating layer 32, where the memory alloy layer 31 and the heating layer 32 are stacked in layers, and the heating layer 32 is made of carbon nanofiber material. The housing 2 may also be made of the same base material as the memory deformation member 3. The memory deformation member 3 may further include a housing 2, generally made by additive manufacturing technology, and during three-dimensional printing, the heating layer 32 is printed by carbon nanofiber material, and then the memory alloy layer 31 is printed by memory alloy material, where the ratio of the two materials is 1:2.
in addition, because the application mainly used underwater vehicle or underwater vehicle field, consequently can also increase one deck cooling pipeline layer on the substrate of memory deformation spare 3, can directly carry the cooling pipeline layer to the memory alloy layer 31 through the delivery pump with the environment water and cool down.
It should be noted that the memory alloy material used in this embodiment has multiple response memory deformation capability. Jiang Nada the professor of Chinese zodiac discloses a double-switch hybrid nano-composite film with multiple response shape memory behaviors, wherein the adopted Multiple Response Shape Memory Polymers (MRSMPs) are intelligent high molecular materials, can respond to various environmental stimuli to change or recover the shape, and the main component of the composite film is polyurethane/carbomer/nanocellulose, has a double-switch system structure, and can be triggered by heat, water, ethanol and pH to generate the shape memory behaviors. In the specific implementation, the memory alloy material can be folded into a W shape in the drawings; when the memory deforming member 3 is in the initial state, the included angle between two adjacent memory alloy layers 31 is the smallest; when the memory deformation member 3 is gradually heated and switched to a deformation state, the included angle between two adjacent memory alloy layers 31 is also gradually increased; by this means, the length of the memory deformation element 3 in the radial direction of the housing 2 can be varied with temperature, so that the housing 2 is moved relative to the housing 1.
The memory deformation piece 3 is arranged between the shell 1 and the housing 2, one end of the memory deformation piece 3 is fixedly arranged on the shell 1, the other end of the memory deformation piece 3 is fixedly connected to the edge of one side of the extending direction of the housing 2, the memory deformation piece 3 is switched to a deformation state by thermal deformation, and the connecting end of the memory deformation piece 3 and the housing 2 is far away from the connecting end of the memory deformation piece 3 and the shell 1.
The heating portion 4 is provided in the housing 1 and is used for heating the memory deforming member 3.
The present application conducted noise reduction effect comparison test with the conventional aircraft having the fixed-height groove as a comparative example with the present embodiment, the conventional aircraft having a groove height of 12mm, and the aircraft conducted comparison test with 5, 10 and 15 knots, respectively, to obtain test data of table 1 below.
| Speed of navigation | Comparative example | This embodiment |
| Section 5 | 1.0dB | 2.0dB |
| Section 10 | 1.5dB | 2.7dB |
| 15 sections | 0.5dB | 2.2dB |
The application method of the unmanned submarine stern rudder noise reduction device comprises the following steps of.
Step one, the deformed member 3 is memorized to be in an initial state, and the heating part 4 is powered off.
Step two, the heating part 4 is powered on, the heating layer 32 is electrified and heats the memory alloy layer 31, the memory deformation member 3 is switched to a deformation state by thermal deformation, and the distance between the most far end of the housing 2 away from the surface of the housing 1 and the surface of the housing 1 is increased.
And thirdly, the heating part 4 is powered off, the memory deformation piece 3 is cooled and deformed to restore to the initial state, and the distance between the farthest end of the housing 2 far away from the surface of the housing 1 and the surface of the housing 1 is reduced.
Example two
On the basis of the first embodiment, although the memory deformation member 3 may be disposed on only one side of the housing 2, and the other side of the housing 2 is fixedly connected to the surface of the housing 1, the height of the housing 2 may be adjusted, but this may cause the change in the height of the housing 2, the cross-sectional shape of the housing 2 may also change, and thus the cross-sectional shape of the groove may also change, which may affect the noise reduction effect of the groove.
Therefore, in this embodiment, the memory deformation member 3 is disposed between the edges of the two sides of the housing 2 in the extending direction and the housing 1, and the housing 2 is made of a metal material or the same substrate as the memory deformation member 3 is adopted.
The heating portion 4 is a power source, and the positive and negative electrodes of the power source are respectively connected to the two heating layers 32. After the power is turned on, the current flows out through the positive electrode of the power, sequentially passes through the memory deformation piece 3 on one side, the housing 2 and the memory deformation piece 3 on the other side, and finally returns to the negative electrode of the power, so that a finished circuit is formed to heat the heating layer 32 of the memory deformation piece 3. The carbon nanofiber material of the heating layer 32 is similar to a resistor, and can rapidly generate heat and raise temperature when current passes through the carbon nanofiber material by applying electric excitation with a certain power. The heating power of the heating part 4 is respectively 10W, 18W and 30W, and the heating power corresponds to three deformation states of the memory deformation piece 3; when the electric excitation is deactivated, the state of the memory deforming member 3 can be gradually restored to the original state with the decrease in temperature.
Example III
On the basis of the first embodiment, a cavity 101 is formed in the housing 1.
The edge of at least one side of the extension direction of the housing 2 is inserted into the cavity 101.
The memory deformation piece 3 is arranged in the cavity 101, and two ends of the memory deformation piece 3 are respectively connected with the edge of the housing 2 inserted into the cavity 101 and the end part of the cavity 101 far away from the surface of the housing 1. The cavity 101 plays a role in limiting and guiding, and limits the moving direction of the connecting end of the memory deformation piece 3 and the housing 2 when the memory deformation piece 3 deforms, so that the housing 2 can be pushed away from the surface of the housing 1 when the memory deformation piece 3 deforms.
Example IV
On the basis of the third embodiment, as shown in fig. 1, in combination with fig. 4, a holding block 5 is further included.
The housing 1 is further provided with a channel 102, and two ends of the channel 102 are respectively communicated between one end of the cavity 101 facing the surface of the housing 1 and the external environment.
The side edges of the housing 2 in the extending direction are inserted into the cavity 101 through the passages 102.
The holding block 5 is provided on the inner wall of the passage 102 and moves relative to the housing 2, the holding block 5 moves toward the housing 2 and clamps the housing 2 between the holding block 5 and the inner wall of the passage 102, or the holding block 5 moves away from the housing 2 and releases the housing 2. The abutting block 5 is used for locking the relative positions of the housing 2 and the shell 1, so that the situation that the memory deformation piece 3 is restored to an initial state after the heating part 4 is powered off to cool the memory deformation piece 3 and possibly drives the housing 2 to return to the initial position is avoided; therefore, the heating part 4 does not need to be continuously started to keep the temperature of the memory deformation part 3, and the energy consumption of the device is greatly reduced.
Example five
As shown in fig. 1, in combination with fig. 5, the skin 6 and the reel mechanism 7 are further included.
Wherein, at least one cavity 103 is also arranged in the shell 1, and the cavity 103 is arranged at one side of the extending direction of the housing 2.
The cover 6 is used for covering the housing 2, and preventing the housing 2 from directly contacting with external water for a long time, so that impurities are attached to the surface of the housing 2, and further the height change of the housing 2 is hindered. The two ends of the skin 6 are arranged on the shell 1 and positioned on two sides of the extending direction of the housing 2, the skin 6 is tightly attached to the surface of the housing 2 far from the shell 1, and the skin 6 has elastic stretching performance. The skin 6 is made of high-elasticity silicone rubber or high-elasticity fiber, such as methyl vinyl silicone rubber or polyether ester elastic fiber, etc.
The reel mechanism 7 is disposed in the cavity 103, and the side edge of the skin 6 in the extending direction of the cover 2 is inserted into the cavity 103 through the surface of the case 1 and wound around the reel mechanism 7.
The application method of the unmanned submarine stern rudder noise reduction device provided by the invention adopts the noise reduction device of the embodiment and comprises the following steps.
Step one, the deformed member 3 is memorized to be in an initial state, and the heating part 4 is powered off.
And secondly, the heating part 4 is powered on, the heating layer 32 is electrified and heats the memory alloy layer 31, the memory deformation piece 3 is switched to a deformation state by thermal deformation, the distance between the furthest end of the housing 2, which is far away from the surface of the housing 1, and the surface of the housing 1 is increased, and meanwhile, the skin 6 is elastically stretched to drive the winding drum mechanism 7 to release the skin 6.
And thirdly, the heating part 4 is powered off, after the memory deformation piece 3 is gradually cooled, the winding drum mechanism 7 rolls back the skin 6, the skin 6 extrudes the housing 2 to reduce the distance between the most far end of the housing 2 away from the surface of the housing 1 and the surface of the housing 1, and the memory deformation piece 3 is compressed and reset to an initial state.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The unmanned submarine stern rudder noise reduction device is arranged on a shell (1) of the stern rudder, and is characterized by comprising:
the housing (2) is covered on the surface of the shell (1);
a memory deformation member (3) which deforms with the change of temperature and has an initial state and at least one deformation state;
the memory deformation piece (3) is arranged between the shell (1) and the housing (2), one end of the memory deformation piece (3) is fixedly arranged on the shell (1) and the other end of the memory deformation piece is fixedly connected to the edge of one side of the extending direction of the housing (2), the memory deformation piece (3) is heated and deformed to be switched to a deformation state, and the connecting end of the memory deformation piece (3) and the housing (2) is far away from the connecting end of the memory deformation piece (3) and the shell (1);
the distance between the most far end of the housing (2) far away from the surface of the housing (1) and the surface of the housing (1) changes along with the shape change of the memory deformation piece (3).
2. The unmanned submersible stern rudder noise reducing device of claim 1, further comprising: and a heating part (4) which is arranged in the shell (1) and is used for heating the memory deformation piece (3).
3. The unmanned submersible stern rudder noise reduction device according to claim 2, wherein: the section of the base material of the memory deformation piece (3) comprises a memory alloy layer (31) and a heating layer (32), wherein the memory alloy layer (31) and the heating layer (32) are arranged in a layered and overlapped mode, and the heating layer (32) is made of carbon nanofiber materials.
4. A noise reduction device for an unmanned submersible stern rudder according to claim 3, wherein: memory deformation pieces (3) are arranged between the edges of the two sides of the housing (2) in the extending direction and the housing (1), and the housing (2) is made of metal materials;
the heating part (4) is a power supply, and the anode and the cathode of the power supply are respectively connected with the two heating layers (32).
5. The unmanned submersible stern rudder noise reduction device according to claim 1, wherein: a cavity groove (101) is formed in the shell (1);
the edge of at least one side of the extending direction of the housing (2) is inserted into the cavity groove (101);
the memory deformation piece (3) is arranged in the cavity groove (101), and two ends of the memory deformation piece (3) are respectively connected with the edge of the housing (2) inserted into the cavity groove (101) and the end part of the cavity groove (101) far away from the surface of the housing (1).
6. The unmanned submersible stern rudder noise reducer of claim 5, further comprising:
a holding block (5);
a channel (102) is further formed in the shell (1), and two ends of the channel (102) are respectively communicated between one end of the cavity groove (101) facing the surface of the shell (1) and the external environment;
the side edge of the extending direction of the housing (2) is inserted into the cavity groove (101) through the channel (102);
the supporting block (5) is arranged on the inner wall of the channel (102) and moves relative to the housing (2), the supporting block (5) moves towards the housing (2) and clamps the housing (2) between the supporting block (5) and the inner wall of the channel (102), or the supporting block (5) moves away from the housing (2) and releases the housing (2).
7. The unmanned submersible stern rudder noise reducing device of claim 1, further comprising:
a skin (6) for covering the housing (2);
the two ends of the skin (6) are arranged on the shell (1) and located on two sides of the extending direction of the housing (2), the skin (6) is tightly attached to the surface, far away from the shell (1), of the housing (2), and the skin (6) has elastic stretching performance.
8. The unmanned submersible stern rudder noise reducer of claim 7, further comprising:
a reel mechanism (7);
wherein, at least one cavity (103) is also arranged in the shell (1), and the cavity (103) is arranged at one side of the extending direction of the housing (2);
the winding drum mechanism (7) is arranged in the cavity (103);
the skin (6) is inserted into the cavity (103) through the surface of the shell (1) along the side edge of the extending direction of the shell (2) and is wound on the winding drum mechanism (7).
9. A method of using the noise reduction device of the stern rudder of an unmanned submersible vehicle, which adopts the noise reduction device of any one of claims 1 to 8, and is characterized by comprising the following steps:
step one, the memory deformation piece (3) is in an initial state, and the heating part (4) is powered off;
step two, the heating part (4) is powered on, the heating layer (32) is electrified and heats the memory alloy layer (31), the memory deformation piece (3) is switched to a deformation state by heat deformation, and the distance between the furthest end of the housing (2) far away from the surface of the housing (1) and the surface of the housing (1) is increased;
and thirdly, the heating part (4) is powered off, the memory deformation piece (3) is cooled and deformed to restore to an initial state, and the distance between the furthest end of the housing (2) far away from the surface of the housing (1) and the surface of the housing (1) is reduced.
10. The method for using the unmanned submersible stern rudder noise reduction device according to claim 9, wherein the method comprises the following steps: in the second step, the distance between the most far end of the surface of the housing (2) far away from the housing (1) and the surface of the housing (1) is increased, and the skin (6) is elastically stretched to drive the winding drum mechanism (7) to release the skin (6);
in the third step, after the memory deformation piece (3) is cooled, the winding drum mechanism (7) rolls back the skin (6), the skin (6) extrudes the housing (2) to enable the distance between the most far end of the housing (2) far away from the surface of the housing (1) and the surface of the housing (1) to be reduced, and the memory deformation piece (3) is compressed and reset to an initial state.
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| CN202310989195.6A CN117302480B (en) | 2023-08-08 | 2023-08-08 | Unmanned submarine stern rudder noise reduction device |
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| CN202310989195.6A CN117302480B (en) | 2023-08-08 | 2023-08-08 | Unmanned submarine stern rudder noise reduction device |
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| FR2726247A1 (en) * | 1994-10-28 | 1996-05-03 | Onera (Off Nat Aerospatiale) | Propulsion system for ship or submarine |
| WO2007077620A1 (en) * | 2005-12-28 | 2007-07-12 | National University Corporation Nagoya University | Smart vortex generator, and airplane, ships, and rotating machines comprising the same |
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| CN103818517A (en) * | 2014-03-24 | 2014-05-28 | 山东理工大学 | Bionic dolphin skin based on shape memory alloy artificial muscle |
| CN105644770A (en) * | 2015-12-30 | 2016-06-08 | 哈尔滨工业大学 | Sharkskin-imitating resistance-reducing wing |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2726247A1 (en) * | 1994-10-28 | 1996-05-03 | Onera (Off Nat Aerospatiale) | Propulsion system for ship or submarine |
| WO2007077620A1 (en) * | 2005-12-28 | 2007-07-12 | National University Corporation Nagoya University | Smart vortex generator, and airplane, ships, and rotating machines comprising the same |
| CN102951286A (en) * | 2011-08-16 | 2013-03-06 | 波音公司 | Variable camber fluid-dynamic body utilizing optimized smart materials |
| US9120554B2 (en) * | 2011-08-16 | 2015-09-01 | The Boeing Company | Variable camber fluid-dynamic body utilizing optimized smart materials |
| CN103818517A (en) * | 2014-03-24 | 2014-05-28 | 山东理工大学 | Bionic dolphin skin based on shape memory alloy artificial muscle |
| CN105644770A (en) * | 2015-12-30 | 2016-06-08 | 哈尔滨工业大学 | Sharkskin-imitating resistance-reducing wing |
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| CN117302480B (en) | 2024-03-22 |
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