CN111824351B

CN111824351B - Deformable fin stabilizer

Info

Publication number: CN111824351B
Application number: CN202010745722.5A
Authority: CN
Inventors: 杨毅; 秦亚文; 张丹; 李孝伟; 彭艳; 罗均; 蒲华燕; 谢少荣
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-07-12
Anticipated expiration: 2040-07-29
Also published as: CN111824351A

Abstract

The invention discloses a deformable fin stabilizer, which comprises two parts which are integrally designed: the flexible part can realize bending deformation, and no structural clearance exists between the flexible part and the rigid part when the flexible part is deformed, namely the flexible part is continuously and smoothly deformed. The fin stabilizer has a relatively simple structure, does not have a structural gap with a rigid structure when the fin stabilizer deforms, can realize continuous and smooth deformation, can improve the lift-drag ratio of the fin stabilizer, and improves the stabilizing effect.

Description

Deformable fin stabilizer

Technical Field

The present invention relates to a fin stabilizer having a deformable function.

Background

In recent years, the speed, depth, height, range and maneuverability of unmanned boats have great breakthrough, and the load modules are increasingly diverse and more flexible to apply. In the process of continuously improving the navigational speed, the change from the monohull ship to the multihull ship proves again that the high stability and the good wave resistance are the guarantee for improving the moving capability of the unmanned ship from a single sea condition to a complex sea condition, and simultaneously, the high stability and the good wave resistance are the non-negligible performance measurement basis and the judgment standard of the high-performance unmanned ship. The unmanned ship has important practical significance for reducing the sailing swing of the unmanned ship under the complex sea condition and increasing the stability of the posture of the ship body.

The stabilizing effect of the fin stabilizer can be effectively increased by properly improving the fin stabilizer. At present, the fluid control theory of the wing is used for designing the stabilizer fin, and concepts such as a sectional wing and a flap are introduced to design a new wing profile.

Disclosure of Invention

The invention aims to provide a deformable fin stabilizer. Compared with the traditional flap and the sectional wing, the fin stabilizer provided by the invention has the greatest difference that the fin stabilizer is continuously deformed, no gap exists between structures, and the lift force and the stability-increasing effect of the fin stabilizer are greatly improved.

In order to achieve the purpose, the invention provides the following scheme:

a deformable fin stabilizer comprising two parts of integral design: the flexible part can realize bending deformation, and no structural gap exists between the flexible part and the rigid part during deformation, namely the flexible part continuously and smoothly deforms; the flexible part comprises a high-elasticity skin, electromagnets, cavities and aluminum sheets, the flexible part is divided into an upper part and a lower part which are symmetrical by taking the aluminum sheet in the middle as a reference, the high-elasticity skin is made of silica gel, the electromagnets are placed in the silica gel when the silica gel is poured, the cavities are formed between the left and right adjacent electromagnets, when the two electromagnets are mutually attracted and attached together, the two sides of each cavity are also attached together, the silica gel above the cavity can be contracted and shortened, and the flexible part of the fin stabilizer can be bent upwards due to the good elasticity of the silica gel; if the fin stabilizer is bent downwards, electrifying the electromagnet below; when the electromagnets are installed, N poles and S poles generated when two adjacent electromagnets are electrified are adjacent, when the N electromagnets are electrified, the electromagnets generate magnetism to generate N poles and S poles, the N poles and the S poles of the two adjacent electromagnets are adjacent, and the two electromagnets with opposite polarities attract each other and are attached together.

Furthermore, the number N of the electromagnets is more than or equal to 5.

Further, the high elasticity covering is made by silica gel, the electro-magnet can be changed into the coil, has the cavity between two adjacent electro-magnets.

Advantageous effects

1) The invention is divided into two parts, one part is a rigid structure, the structure does not need to be deformed, the other part is a flexible structure which can be deformed, and no structural gap is formed between the flexible structure and the rigid structure during deformation, namely continuous and smooth deformation is realized;

2) the flexible part of the invention is divided into an upper part and a lower part by taking an aluminum sheet in the middle as a reference, when the electromagnet above is electrified, the electromagnet can generate magnetism to generate N poles and S poles, the N poles and the S poles of two adjacent electromagnets are adjacent, and two electromagnets with opposite polarities attract each other and are attached together. The silica gel has no influence on the magnetic field generated by the electromagnet. The aluminum sheet can not lead the magnetism, therefore the electromagnet electrification of top produces the magnetic field and can not influence the electro-magnet of below. In the invention, the cavity is arranged between the two electromagnets, when the two electromagnets are mutually attracted and attached together, the two sides of the cavity are also attached together, the silica gel above the cavity can be contracted and shortened, and the fin can be bent upwards due to the good elasticity of the silica gel. If the fin stabilizer is bent downwards, the electromagnet below the fin stabilizer can be electrified;

3) the high-elasticity skin is made of silica gel, and the silica gel has good waterproofness and high elasticity.

4) The structure of the invention is relatively simple, no structural clearance exists between the anti-rolling fin and the rigid structure when the anti-rolling fin deforms, continuous and smooth deformation can be realized, the lift-drag ratio of the anti-rolling fin can be improved, and the anti-rolling effect can be improved.

Drawings

Fig. 1 is an external view of a deformable fin stabilizer according to an embodiment of the present invention.

Fig. 2 is a structural view of a deformable fin stabilizer according to an embodiment of the present invention.

Wherein, 1: wire 2: fin stabilizer 3: fin rigid portion 4: and (5) an electromagnet: cavity 6: aluminum sheet 7: high-elasticity covering

Detailed Description

The following description is provided for illustrative purposes and is not intended to limit the invention to the particular embodiments disclosed.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Referring to fig. 1-2, fig. 1 is an external view of a deformable fin according to an embodiment of the present invention, and fig. 2 is a structural diagram of the deformable fin according to an embodiment of the present invention.

As shown in fig. 1, the fin 2 of the present invention is divided into two parts, a rigid part 3 on the left side and a flexible part on the right side, wherein the flexible part can achieve bending deformation.

As shown in fig. 2, the main parts of the flexible part include a high elastic skin 7, an electromagnet 4, a cavity 5, and an aluminum sheet 6. The flexible part is divided into an upper part and a lower part by taking the aluminum sheet 6 in the middle as a reference. The high-elasticity skin 7 is silica gel, when the silica gel is poured, the electromagnets 4 are placed in the silica gel, and a cavity 5 is formed between the left and right adjacent electromagnets 4. When the electromagnets 4 are installed, N poles and S poles generated when two adjacent electromagnets are electrified are adjacent.

When N (N is more than or equal to 5) electromagnets 4 above are electrified, the electromagnets 4 generate magnetism to generate N and S poles, the N and S poles of two adjacent electromagnets are adjacent, and two electromagnets with opposite polarities attract each other and are attached together. The silica gel has no influence on the magnetic field generated by the electromagnet. The aluminum sheet 6 can not conduct magnetism, so the electromagnet above is electrified to generate a magnetic field, and the electromagnet below is not influenced. In the invention, because the cavity is formed between the two electromagnets, when the two electromagnets are mutually attracted and attached together, the two sides of the cavity 5 are also attached together, so that the silica gel above the cavity can be contracted and shortened, and because the silica gel has better elasticity, the flexible part of the fin stabilizer 1 can be bent upwards.

When the fin stabilizer 1 is bent downward, the lower N (N ≧ 5) electromagnets 4 are energized.

The aluminum sheet 6 in the middle of the fin has smaller mass and smaller volume, and the specific process of deformation of the fin skin 7 cannot be influenced. The aluminum sheet 6 can be replaced by other materials which are not magnetic and do not influence the deformation of the stabilizer fin.

The electromagnet can be replaced by a coil, and the coil can be electrified to generate a magnetic field.

Wherein the angle of bending of the fin can be changed by changing the size of the electromagnet or the number of turns of the coil.

Wherein the number of electromagnets, voltage, current, etc. can be adjusted to suit different sizes of deformable stabilizer fins.

Wherein, magnetic materials can be added in the silica gel to enhance the magnetic field effect after the electromagnet is electrified.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A deformable fin stabilizer, characterized in that it comprises two parts designed in one piece: the flexible part can realize bending deformation, and no structural gap exists between the flexible part and the rigid part during deformation, namely the flexible part continuously and smoothly deforms; the flexible part comprises a high-elasticity skin, electromagnets, cavities and aluminum sheets, the flexible part is divided into an upper part and a lower part which are symmetrical by taking the aluminum sheet in the middle as a reference, the high-elasticity skin is made of silica gel, the electromagnets are placed in the silica gel when the silica gel is poured, the cavities are formed between the left and right adjacent electromagnets, when the two electromagnets are mutually attracted and attached together, the two sides of each cavity are also attached together, the silica gel above the cavity can be contracted and shortened, and the flexible part of the fin stabilizer can be bent upwards due to the good elasticity of the silica gel; if the fin stabilizer is required to be bent downwards, the electromagnet below is electrified; when the electromagnets are installed, N poles and S poles generated when two adjacent electromagnets are electrified are adjacent, when the electromagnets are electrified, the electromagnets generate magnetism to generate N poles and S poles, the N poles and the S poles of the two adjacent electromagnets are adjacent, and the two electromagnets with opposite polarities attract each other and are attached together.

2. A deformable stabilizer fin as claimed in claim 1, characterized in that the number N of said electromagnets is greater than or equal to 5.

3. A deformable stabilizer fin as claimed in claim 1, characterized in that said highly elastic skin is made of silicone, said electromagnets can be replaced by coils, and a cavity is provided between two adjacent electromagnets.