CN115158628B - Rudder device based on intelligent temperature control surface - Google Patents

Rudder device based on intelligent temperature control surface Download PDF

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Publication number
CN115158628B
CN115158628B CN202210806290.3A CN202210806290A CN115158628B CN 115158628 B CN115158628 B CN 115158628B CN 202210806290 A CN202210806290 A CN 202210806290A CN 115158628 B CN115158628 B CN 115158628B
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rudder blade
temperature control
rudder
heating
plate
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CN115158628A (en
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杨留名
王帅
裴志勇
柳仕成
敖雷
张磊
吴卫国
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06Steering by rudders
    • B63H25/38Rudders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06Steering by rudders
    • B63H25/08Steering gear

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)

Abstract

The invention relates to a rudder device based on an intelligent temperature control surface, which comprises a rudder blade structure, wherein a thermal response superhydrophobic layer is arranged on the surface of the rudder blade structure, a temperature control device is arranged in the rudder blade structure, and the temperature control device is connected with a control panel in a ship cockpit; the rudder blade structure is a hollow wing structure and comprises a rudder blade, wherein the inner wall surface of the rudder blade is divided into blocks, and temperature control devices are fixedly arranged in the inner wall surface divided areas of the rudder blade; the lower part of the heating plate is fixedly provided with a heat insulation layer, and the heat insulation layer is respectively provided with a layer along the two sides of the axis direction of the rudder blade. The intelligent control system is simple to operate and low in energy consumption, can save structural space to a large extent, can be well applied to a small unmanned intelligent aircraft, changes a traditional control mode, and further improves the intelligent degree of the aircraft.

Description

Rudder device based on intelligent temperature control surface
Technical Field
The invention relates to the field of ship control, in particular to a rudder device based on an intelligent temperature control surface.
Background
The traditional steering system consists of five parts, namely a steering blade, a steering engine, a steering device and a rotating device. When the steering is needed, the ship rotates the steering blade through the steering device to generate a deflection angle, so that water flows at two sides of the steering blade are not symmetrical. One side where deflection occurs is the upstream surface, and the other side is the downstream surface. The flow velocity of the water flow on the water facing side is smaller, and the flow velocity on the water backing side is larger, so that the pressure difference of the water flow on the rudder blade is generated under the effect of the Bernoulli effect, and a rotating moment is provided for the ship, so that the ship heading is changed. The rudder blade in the traditional control mode has larger resistance when rotating, more energy is required to be consumed, and related rotating devices are required to be matched, so that a large amount of structural space of the ship is occupied. Therefore, there is a need to improve upon conventional steering schemes.
When the surface of the object slides, the water flow is not simply contacted with the solid wall surface with larger adhesiveness, but is contacted with the bubbles with smaller blocking effect, and the loss of the speed of the water flow flowing through the side surface is smaller; and the water flow on the side without sliding contacts with the solid wall surface with larger adhesiveness, so that the water flow speed loss is larger. In addition, the boundary slip can reduce the resistance to the boundary slip, and the longer the slip length formed on the surface, the greater the slip speed of the water flow and the wall surface. A thermal response super-hydrophobic material with boundary slip effect, which can show different wettability under the influence of temperature, is disclosed. When it is not subjected to heat treatment, it has the same physical properties as the surface of a normal material; when the material is subjected to heating treatment, the contact angle of the surface of the material is increased, and when the material is heated to a certain temperature, the contact angle reaches the maximum value and remains unchanged, and at this time, the surface of the material shows the characteristics of superhydrophobicity and sliding. (Jiang Lei. Feng Lin. Bionic intelligent nanointerface material [ M ], chemical industry Press, 2007.)
At present, steering of ships is realized by rotating a steering blade through a steering device. When the ship deviates from a given course in the sailing process, the rudder in the cockpit needs to be operated when small-angle correction is carried out, so that matched rudder equipment works to rotate the rudder blade. This traditional way of handling is cumbersome and consumes a lot of energy during the rotation. In the field of small unmanned intelligent aircrafts, a traditional operation mode requires more matched devices, and the structure space of the aircrafts can be occupied excessively.
Disclosure of Invention
The invention aims to solve the technical problem of providing the rudder device based on the intelligent temperature control surface, which is simple to operate and has low energy consumption, so that the time required for steering the ship is shortened, the steering efficiency is improved, the related steering device is not arranged, and the structural space is saved to a large extent.
The technical scheme adopted for solving the technical problems is as follows: the rudder device based on the intelligent temperature control surface is constructed and comprises a rudder blade structure, wherein a thermal response superhydrophobic layer is arranged on the surface of the rudder blade structure, a temperature control device is arranged in the rudder blade structure, and the temperature control device is connected with a control panel in a ship cockpit;
The rudder blade structure is a hollow wing structure and comprises a rudder blade, wherein the inner wall surface of the rudder blade is divided into blocks, and temperature control devices are fixedly arranged in the inner wall surface divided areas of the rudder blade;
The temperature control device comprises a U-shaped support frame arranged in the middle of the inner wall surface of the rudder blade, a thermosensitive magnet is arranged in the U-shaped of the U-shaped support frame, the U-shaped bottom of the U-shaped support frame is a breakable metal plate, a metal sheet is arranged at a breakpoint of the U-shaped bottom of the U-shaped support frame, the magnet is arranged at the upper end of the metal plate, a lever is arranged at the lower end of the metal plate, and the lever is connected with a power supply through a binding post; the heating plate comprises a plate surface, a heating pipe is fixedly arranged on the upper surface of the plate surface, a conductive heating agent is arranged in the heating pipe, the head end of the heating pipe is a positive electrode, the tail end of the heating pipe is a negative electrode, the positive electrode of the heating pipe is connected with the U-shaped support frame through a fixing groove, the negative electrode of the heating pipe is fixedly arranged at the tail of the plate surface and connected to a control panel through a wire, and the positive electrode and the negative electrode of the heating pipe form a closed loop. The lower part of the heating plate is fixedly provided with a heat insulation layer, and the heat insulation layer is respectively provided with a layer along the two sides of the axis direction of the rudder blade.
According to the scheme, the inner wall of the inner wall surface of the rudder blade is provided with the fixing hole, the upper surface of the heating plate is provided with the fixing buckle, and the fixing buckle is clamped in the fixing hole to realize the fixed connection between the heating plate and the inner wall surface of the rudder blade.
According to the scheme, the rudder blade structure is made of steel.
According to the above scheme, the lever is made of metal materials.
According to the scheme, the heating tube is fixedly arranged on the upper surface of the plate surface through the fixing frame.
The rudder device based on the intelligent temperature control surface has the following beneficial effects:
1. The steering control device is used for controlling the ship based on the control of the surface slip distribution of the rudder blade, and the steering of the ship can be realized without the help of related matched devices.
2. According to the invention, the thermal response super-hydrophobic material is coated on the surfaces of the two sides of the rudder blade by utilizing the characteristics of the thermal response super-hydrophobic material, and a temperature control device is arranged in the rudder blade; when steering is needed, heating the temperature to a certain temperature according to the characteristics of the material, so that the contact angle between water flow and the surface of the rudder blade reaches 150 degrees, and a super-hydrophobic surface is built on the rudder blade at the side, so that a slipping phenomenon is generated, and the speed of the water flow flowing through the side is increased; the rudder blade on the other side is not processed, so that the water flow flowing through the two sides of the rudder blade generates speed difference and pressure difference, and the transverse acting force required by steering is generated on the two sides of the rudder blade.
3. The invention saves the structural space of the aircraft, has low manufacturing cost and is beneficial to improving the traditional operation mode.
4. The control mode of the invention is combined with the traditional rudder equipment, shortens the time required by the steering of the aircraft, and improves the steering efficiency; when the aircraft needs small angle redirection, the rudder blade surface sliding distribution is directly regulated and controlled, and rudder equipment is not required to be operated, so that the energy consumption is reduced, and the working efficiency is improved.
5. Along with the small-sized intellectualization of the aircraft, the manipulation mode of the invention is directly introduced into the small-sized aircraft, so that the traditional manipulation mode is changed, and the degree of intellectualization of the aircraft is improved.
6. Because the superhydrophobic surface has the characteristics of drag reduction, corrosion resistance, self cleaning and the like, when steering is performed, the resistance of the rudder blade can be reduced, the steering efficiency is improved, and the energy consumption required by steering is reduced; the rudder blade structure under water for a long time is protected, and the service life is prolonged.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a rudder blade structure of a rudder device based on an intelligent temperature control surface;
FIG. 2 is a schematic representation of the change in wettability of the thermally responsive superhydrophobic material of the invention with water at different temperatures;
FIG. 3 is a schematic diagram of a temperature control device of the present invention;
FIG. 4 is a schematic cross-sectional view of a heating plate of the present invention;
fig. 5 is a control loop diagram of the present invention for steering an aircraft to the right by controlling the slip profile.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-5, the rudder device based on the intelligent temperature control surface comprises a rudder blade structure, wherein the rudder blade structure is made of steel. The surface of the rudder blade structure is provided with a thermal response superhydrophobic layer, the temperature control device 1 is arranged in the rudder blade structure, and the temperature control device 1 is connected with a control panel in the ship cockpit;
The rudder blade structure is a hollow wing structure and comprises a rudder blade, the inner wall surface of the rudder blade is arranged in a blocking manner, and a temperature control device 1 is fixedly arranged in the blocking area of the inner wall surface of the rudder blade; the inner wall of the inner wall surface of the rudder blade is provided with a fixing hole 4, the upper surface of the heating plate 6 is provided with a fixing buckle 5, and the fixing buckle 5 is clamped in the fixing hole 4 to realize the fixed connection between the heating plate 6 and the inner wall surface of the rudder blade.
The temperature control device 1 comprises a U-shaped supporting frame 11 arranged in the middle of the inner wall surface of a rudder blade, a thermosensitive magnet 8,U is arranged in the U-shaped of the U-shaped supporting frame 11, the U-shaped bottom of the U-shaped supporting frame 11 is a breakable metal plate 12, a metal sheet 10 is arranged at the breakpoint of the U-shaped bottom of the U-shaped supporting frame 11, a magnet is arranged at the upper end of the metal plate 12, a lever 13 is arranged at the lower end of the metal plate 12, and the lever 13 is made of metal materials. The lever 13 is connected with a power supply through a binding post 14; the left and right sides of the U-shaped supporting frame 11 are provided with heating plates 6, and the lower part of the heating plates 6 is fixedly provided with a heat insulation layer 2. The heating plate 6 comprises a plate surface 21, wherein the heating tube 16 is fixedly arranged on the upper surface of the plate surface 21, and the heating tube 16 is fixedly arranged on the upper surface of the plate surface 21 through the fixing frame 19. The inside of the heating tube 16 is provided with a conductive heating agent, the head end of the heating tube 16 is a positive electrode 17, the tail end of the heating tube 16 is a negative electrode 18, the positive electrode 17 of the heating tube 16 is connected with the U-shaped supporting frame 11 through the fixing groove 7, the negative electrode 18 of the heating tube 16 is fixedly arranged at the tail part of the plate surface 21 and is connected to the control panel through a wire, and the positive electrode 17 and the negative electrode 18 of the heating tube 16 form a closed loop.
The rudder blade structure builds an intelligent temperature control surface according to the actual demand in the ship navigation process, and controls the slip distribution of the rudder blade surface. The rudder blade structure comprises a plurality of rudder blades, the rudder blades are made of steel materials, and the inside of each rudder blade is designed into a hollow structure and is used for installing the temperature control device 1. The size, the dimension and the like of the rudder blade are designed and manufactured according to actual requirements, the thickness of the rudder blade is reduced as much as possible under the condition of ensuring the strength, and steel with better heat conduction efficiency is adopted; the design of the rudder blade structure comprehensively considers the characteristics of the temperature control device 1 and the requirements in the actual working condition.
As shown in fig. 2, the thermally responsive superhydrophobic layer exhibits superhydrophobic characteristics when a certain temperature is reached, thereby generating a slip phenomenon on the rudder blade surface. Coating a thermal response superhydrophobic material on the outer surface of a rudder blade by adopting a specific method so as to reduce the loss of the material under water; the outer surface of the rudder blade is coated regularly, so that the rudder blade can be covered on the surface effectively when in normal operation. The paint surface is affected by temperature and has different wettability to water. When the heating treatment is not carried out, the material does not show super-hydrophobic property, and the rudder blade surface and the common surface have the same physical property at the moment; when heated to a certain temperature, the material exhibits superhydrophobic properties, thereby creating a superhydrophobic surface on the rudder blade. The thermal response superhydrophobic material is affected by temperature to form different wettability on water, and when the environment temperature is below 10 , the coated rudder blade surface and the common surface have the same physical properties and cannot slip. Along with the rise of the temperature, the contact angle of water flow and the surface of the rudder blade gradually increases, when the temperature reaches a certain value, the contact angle of the surface of the rudder blade is 150-160 degrees, the surface of the rudder blade shows super-hydrophobic property, and a slipping phenomenon can be generated, so that the water flow speed flowing through the surface of the blade increases.
By utilizing the characteristics of the thermal response superhydrophobic material, a superhydrophobic surface is intelligently built on the rudder blade. The sliding phenomenon causes the speed gradient on the boundary surface to be reduced, and accordingly the shearing force on the boundary surface is reduced, and the resistance to the water flow flowing through the surface of the rudder blade is also reduced, so that the fluid speed on the surface of the rudder blade is not 0, namely the sliding speed is generated, and the water flow flowing through the two sides of the rudder blade forms a speed difference. According to Bernoulli equation, the larger the flow velocity, the smaller the pressure, and the larger the pressure, at the same position and height, so that the pressure difference is generated on both sides of the rudder blade. The water flow speed flowing through the two sides of the rudder blade is changed by regulating and controlling the sliding distribution of the two sides of the rudder blade, so that the transverse acting force required by the steering of the aircraft is generated, and the purposes of steering and turning of the aircraft are achieved.
The temperature control device 1 changes the temperature environment of the material by means of electric heating, and is arranged inside the rudder blade structure in order not to increase the additional resistance of the ship. The steel material has good heat conductivity, and the temperature environment of the material is adjusted by heating the inner wall surface and transmitting the heat to the surface of the rudder blade. The rudder blade works under water for a long time, the temperature can be quickly reduced when water flows through the surface of the rudder blade, and the adopted heating device has the characteristics of quick heating and sustainable heating. The thermosensitive magnet 8 is a chemical substance, is sensitive to temperature, has magnetic property to attract the magnet 9 below a certain temperature, and weakens the magnetism above a certain temperature, and weakens the magnetism at a higher speed; the temperature setting can be realized by changing the proportion of chemical components, and the invention sets according to the temperature characteristic of the heat responsive super hydrophobic material.
As shown in fig. 4, the rudder blade area required to be heated is large, and the shape of the inner wall surface of the rudder blade is irregular according to specific working conditions. When the heating plate 6 is arranged, the plate surface 21 is designed into a plate surface 21 shape which caters for the shape of the rudder blade, the fixing buckle 5 is arranged on the heating plate 6, the fixing hole 4 is arranged on the inner wall surface of the rudder blade, and the heating plate 6 is arranged against the inner wall surface of the rudder blade; the size, shape, number and position of the heating pipes are ensured according to the actual shape of the inner wall surface of each leaf. The positive electrode 17 of the heating plate 6 is connected with the U-shaped supporting frame 11 through the fixing groove 7; the heating tube 16 is filled with a chemical material capable of conducting heat, the tail end of the heating tube is connected with the negative electrode 18, and the heating tube 16 is fixed on the upper surface of the plate surface 21 through the fixing frame 19 and the screw 20.
The heat conductivity of the steel materials at different temperatures is different, so that the surface of the rudder blade is heated to a certain temperature, and the materials are ensured to be heated uniformly; the heating plate 6 is designed in a block manner, installed in a block manner and controlled in a block manner according to the actual shape of each rudder blade. The U-shaped support frame 11 in the temperature control device 1 is not oversized, so that the heating effect on the surface of the rudder blade is prevented from being influenced. Every two heating plates 6 are symmetrically arranged in the fixed groove 7 of the temperature control device 1 to form a set of independent heating devices; when one of the heating plates fails, the other heating plates 6 are not affected to work normally. Only controlling the slip distribution on the rudder blade surface on one side alone is discussed in the present invention to change the vessel heading. The temperature control devices 1 arranged on the inner wall surface of the same side are connected in series and then connected with the control panel of the other side in parallel to the inside of the cockpit.
The temperature control device 1 is connected with a control panel in the cockpit, a user realizes the regulation and control of the slip distribution on the surface of the rudder blade through the control panel, and the power supply required by the temperature control device 1 is provided by a power generation system of the ship. The rudder blade is made of steel, the steel has good heat conductivity, when the rudder blade on one side is heated, the temperature is prevented from being transmitted to the other side, and the environmental temperature of the surface of the rudder blade is changed, so that the material on the other side also shows super-hydrophobic characteristics, the speed difference and the pressure difference of water flows on two sides are small, and the effective rudder force cannot be formed, so that the purpose of ship steering cannot be achieved. The heat insulation layers 2 are respectively arranged on two sides of the rudder blade in the axial direction, and the heat insulation layers 2 are arranged at the joints of the rudder blades on the two sides. The heat insulation layer 2 is added outside each heating plate 6, so that the heating efficiency can be effectively improved, and the rudder device can achieve a good steering effect.
In the preferred embodiment of the invention, if the aircraft needs to turn right in navigation, a control panel in the cockpit is controlled, so that a binding post 14 in the temperature control device 1 connected in series with the inner wall surface of the left side of the rudder blade is powered on, a thermosensitive magnet 8 attracts a magnet 9, and a metal plate 12, a metal sheet 10 and a U-shaped support frame 11 are closed; the lever 13 is made of a metal material, and an electric current is connected to the positive electrode 17 of the heating plates 6 on both sides through the lever 13 to form a closed circuit with the negative electrode 18, so that the chemical material in the heating tube 16 is heated by conduction, and the material on the left side surface is heated. When heated to a certain temperature, the magnetism of the thermo-sensitive magnet 8 weakens until the magnet 9 is no longer attracted to it; the metal plate 12 in the device has lighter weight, the metal plate 12 is disconnected from the metal sheet 10 under the action of gravity, the heating plate 6 is not heated any more, and the power supply in the device is automatically disconnected.
When the material on the left side surface shows the super-hydrophobic characteristic, the contact angle of the water flow and the left blade surface reaches 150 degrees, namely the super-hydrophobic surface is created on the left side of the rudder blade. The left rudder blade is slipped, so that the flow velocity of the water flowing through the left rudder blade is greater than that of the water flowing through the right rudder blade. The Bernoulli principle is adopted, the pressure is small when the flow velocity on the left side is large, and the pressure is large when the flow velocity on the right side is small, so that left transverse acting force is generated on the rudder blade, and the right steering of the aircraft is realized. The rudder blade works underwater, so that the heat dissipation effect is good, and a heat dissipation device is not required to be additionally arranged; when the temperature is reduced, the thermosensitive magnet 8 is magnetically recovered and attracted with the magnet 9, the temperature control device 1 is in a closed state, and the heating plate 6 can work after the power supply is connected through the control panel; if the desired steering effect is not achieved, the left leaves may be continued to be heated. The resistance on the side surface of the rudder blade is smaller than the resistance on the side without slipping, which is helpful for improving the steering efficiency. After the steering is finished, the surface of the left blade is restored to the common surface, so that water flowing through the two sides of the rudder blade is in a symmetrical state, the flow rates of the two sides are the same, the transverse acting force generated during the steering is eliminated, and the ship is restored to a straight navigation state. Similarly, when the vehicle needs to turn to the left, the thermally responsive material on the right side surface is heated to a temperature in accordance with the above-described operation. The invention only relates to the independent control of the slip distribution on the surface of the rudder blade at one side, and can also consider and regulate the slip distribution at two sides instead of the full slip state at one side, so as to explore which slip distribution has larger speed difference at two sides of the rudder blade and form larger steering force, thereby shortening the time required for steering and improving the steering efficiency.
The invention has three application modes:
First, when the ship needs small-angle course correction, the ship can be realized by regulating and controlling the surface slip distribution of the rudder blade without needing a steering device.
Secondly, when the ship needs to turn, the steering device can be considered to be combined with a traditional steering device, thereby being beneficial to improving steering efficiency and shortening the time required by turning.
Thirdly, in view of the fact that the novel rudder for regulating and controlling the surface sliding distribution of the rudder blade does not occupy a large amount of structural space, the novel rudder can be considered to be applied to a small-sized aircraft, and a traditional rudder turning device is not arranged, so that the intelligent degree of the aircraft is improved.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims (5)

1. The rudder device based on the intelligent temperature control surface is characterized by comprising a rudder blade structure and a temperature control device, wherein the surface of the rudder blade structure is provided with a thermal response superhydrophobic layer, the temperature control device is arranged in the rudder blade structure, and the temperature control device is connected with a control panel in a ship cockpit;
The rudder blade structure is a hollow wing structure and comprises a rudder blade, wherein the inner wall surface of the rudder blade is divided into blocks, and temperature control devices are fixedly arranged in the inner wall surface divided areas of the rudder blade;
The temperature control device comprises a U-shaped support frame arranged in the middle of the inner wall surface of the rudder blade, a thermosensitive magnet is arranged in the U-shaped of the U-shaped support frame, the U-shaped bottom of the U-shaped support frame is a breakable metal plate, a metal sheet is arranged at a breakpoint of the U-shaped bottom of the U-shaped support frame, the magnet is arranged at the upper end of the metal plate, a lever is arranged at the lower end of the metal plate, and the lever is connected with a power supply through a binding post; the heating plates comprise a plate surface, heating pipes are fixedly arranged on the upper surface of the plate surface, conductive heating agents are arranged in the heating pipes, the head ends of the heating pipes are positive electrodes, the tail ends of the heating pipes are negative electrodes, the positive electrodes of the heating pipes are connected with the U-shaped support frame through fixing grooves, the negative electrodes of the heating pipes are fixedly arranged at the tail parts of the plate surface and are connected to a control panel through wires, and the positive electrodes and the negative electrodes of the heating pipes form a closed loop;
The lower part of the heating plate is fixedly provided with a heat insulation layer, and the heat insulation layer is respectively provided with a layer along the two sides of the axis direction of the rudder blade.
2. The rudder device based on the intelligent temperature control surface according to claim 1, wherein a fixing hole is formed in the inner wall of the inner wall surface of the rudder blade, a fixing buckle is arranged on the upper surface of the heating plate, and the fixing buckle is clamped in the fixing hole to fixedly connect the heating plate with the inner wall surface of the rudder blade.
3. The intelligent temperature control surface based rudder device of claim 1 wherein the rudder blade structure is made of steel.
4. The intelligent temperature control surface based rudder device of claim 1 wherein the lever is made of a metallic material.
5. The rudder apparatus based on intelligent temperature control surface according to claim 1, wherein the heating tube is fixedly arranged on the upper surface of the panel through a fixing frame.
CN202210806290.3A 2022-07-08 2022-07-08 Rudder device based on intelligent temperature control surface Active CN115158628B (en)

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CN114620214A (en) * 2020-12-08 2022-06-14 南京中船绿洲机器有限公司 Electrical control system and method based on rotary vane type steering engine

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US20190100282A1 (en) * 2017-10-02 2019-04-04 Silcotek Corp. Article in motion comprising hydrophobically-coated region

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Publication number Priority date Publication date Assignee Title
KR20120133111A (en) * 2011-05-30 2012-12-10 현대제철 주식회사 Rudder for vessel
CN202717029U (en) * 2012-06-05 2013-02-06 哈尔滨工程大学 Rudder for bionic coupled ship
CN204688398U (en) * 2015-05-29 2015-10-07 上海船舶研究设计院 A kind of device reducing semi-spade rudder cavitation phenomena
CN114620214A (en) * 2020-12-08 2022-06-14 南京中船绿洲机器有限公司 Electrical control system and method based on rotary vane type steering engine

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