Marine invisible mast and camouflage pattern manufacturing method thereof
Through the three-dimensional software design and spraying visible light invisible coating, the problem that existing masts are easily discovered is solved, the degree of integration with the ocean background is improved, and the good invisibility effect is achieved.
Patent Information
- Application Number
- CN202411737387.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-03-07
AI Technical Summary
Existing masts are exposed to the water surface and are easily discovered by optical detection equipment, making them difficult to blend with the ocean background, resulting in poor stealth effect.
The camouflage pattern is designed using three-dimensional software, and the three-dimensional model-two-dimensional physical transformation is used to ensure pattern consistency, and the visible light invisible coating is sprayed, including main color and contrast spots, reducing brightness contrast and metaspectral index.
The mast and the ocean background are improved, the probability of being discovered is reduced, and a good stealth effect is achieved.
Smart Images
Figure CN119577973A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ship stealth design, and in particular to a ship stealth mast and a method for making a camouflage pattern thereof. Background Art
[0002] When underwater vehicles such as manned submersibles and UUVs need to perform tasks such as communication or navigation, they need to extend the mast carrying payloads such as radars or electro-optical periscopes out of the water and keep the payload at a specific height above the water surface. Therefore, part of the mast is exposed above the water surface.
[0003] When the underwater vehicle is used to perform tasks, the mast exposed above the water surface becomes the detection target of the optical detection equipment. Because the surface of the existing mast exposed above the sea surface is generally the original color of the material or black paint, there is a big difference in spectral characteristics such as brightness with the ocean background, which is easy to be imaged by optical equipment at a long distance and discovered after image analysis and automatic recognition.
[0004] Therefore, it is necessary to design the mast to be stealthier, reduce optical indicators such as the brightness contrast and metamerism index between the mast and the ocean background, improve the integration of the mast and the ocean background, and reduce the probability of being discovered. Summary of the invention
[0005] The main purpose of the present invention is to provide a ship stealth mast and a method for making a camouflage pattern thereof, aiming to improve the integration of the mast and the ocean background.
[0006] To achieve the above object, the present invention provides a method for producing a camouflage pattern of a ship's stealth mast, comprising the following steps: The spot size of the camouflage pattern is determined based on the observation distance of the detection equipment to the mast; Performing surface extraction on the three-dimensional solid model of the mast body to obtain a curved surface model including all surfaces, making spots on the curved surface model, unfolding the surface of the curved surface model into a two-dimensional plane, and obtaining a two-dimensional pattern template; A physical pattern template containing spots of a camouflage pattern is produced according to the two-dimensional pattern template; The mast body is sprayed with the main color of the visible light stealth coating, the solid pattern template is covered on the surface of the mast body, the contrasting color of the visible light stealth coating is applied to the spots, and then the solid pattern template is removed.
[0007] Preferably, in the step of determining the spot size of the camouflage pattern according to the observation distance of the detection device to the mast, The average value of the major axis size of the spot is d, d=constant coefficient × D, D is the observation distance of the detection equipment to the mast, the average value of the major and minor axis ratio of the spot is e, and the major and minor axis sizes of the spot are generated according to the normal distribution with the average value as the center to obtain a series of spot sizes.
[0008] Preferably, when making spots based on the surface model, the steps specifically include: Make an auxiliary plane tangent to the surface at the design spot; Make a sketch on the auxiliary plane, the sketch is an ellipse, and the size of the major and minor axes of the ellipse is obtained by the step of determining the spot size of the camouflage pattern according to the observation distance of the detection equipment to the mast; Project the sketch on the auxiliary plane onto the surface of the surface model; Complete all spot designs in the same way, and the spots are evenly distributed on the model.
[0009] Preferably, the spots of the solid pattern template are hollowed out to provide a contrasting color for subsequent coating of the visible light stealth coating.
[0010] Preferably, in the step of unfolding the surface of the curved surface model into a two-dimensional plane, the complex curved surface model is unfolded into multiple planes.
[0011] Preferably, before the step of spraying the mast body with the main color of the visible light stealth coating, the step further includes: The outer surface of the mast body is surface treated.
[0012] Preferably, the surface treatment includes sandblasting, grinding or roughening.
[0013] The present invention further proposes a ship stealth mast, comprising a mast body and a visible light stealth coating coated on the outside of the mast body, wherein the visible light stealth coating is manufactured using the above-mentioned camouflage pattern manufacturing method of the ship stealth mast.
[0014] The visible light stealth coating includes a main color and a contrasting color, and the contrasting colors are all elliptical spot patterns.
[0015] Preferably, the visible light stealth coating is formed by coating the surface of the mast with a visible light stealth coating, wherein the visible light stealth coating is prepared from pigment particles and a binder, and the main color and the contrasting color are prepared separately.
[0016] The camouflage pattern manufacturing method of the ship's stealth mast proposed by the present invention has the following beneficial effects: (1) The camouflage pattern is designed by using 3D software, then expanded into a 2D drawing and directly used to make a drawing template. The drawing template is then wrapped onto the 3D entity of the mast body. Through the conversion of 3D model-2D template-3D entity, the consistency of the produced camouflage pattern with the designed camouflage pattern is ensured, thereby improving the efficiency and quality of camouflage pattern design and production; (2) The mast made by this production method is similar to the ocean background in terms of spectral data such as brightness contrast and metamerism index, and the pattern fusion is good, which has a good stealth effect; (3) By producing a camouflage pattern that is not a single color, it can adapt to the actual ocean surface that is not a simple single color due to factors such as waves and sunlight reflection, and further improve the integration of the mast with the actual ocean background. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic flow chart of a method for producing a camouflage pattern of a ship's stealth mast according to the present invention; Figure 2 It is a schematic structural diagram of the stealth mast for ships of the present invention before being coated with a camouflage pattern; Figure 3 It is a schematic structural diagram of a ship stealth mast of the present invention designed with a spotted camouflage pattern; Figure 4 It is a schematic diagram of the structure of the ship's stealth mast after being coated with a camouflage pattern.
[0018] In the picture, 1-mast body, 2-main color, 3-spots.
[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.
[0021] The invention provides a method for producing a camouflage pattern of a ship's stealth mast.
[0022] Reference Figure 1 In this preferred embodiment, a method for making a camouflage pattern of a ship's stealth mast comprises the following steps: Step S10, determining the spot size of the camouflage pattern according to the observation distance of the detection device to the mast; Step S20, extract the surface of the three-dimensional solid model of the mast body to obtain a surface model including all surfaces, and create spots (such as Figure 3 As shown in FIG. 1 ), the surface of the surface model is unfolded into a two-dimensional plane to obtain a two-dimensional drawing template; Step S30, making a physical pattern template containing spots of a camouflage pattern according to the two-dimensional pattern template; Step S40, spray the mast body with the main color of the visible light stealth coating, cover the surface of the mast body with the solid pattern template, apply the contrasting color of the visible light stealth coating on the spots, and then remove the solid pattern template (such as Figure 4 as shown).
[0023] The visible light stealth coating is formed by coating the outer surface of the mast body with visible light stealth paint. There are two colors on the surface of the visible light stealth coating, one is the main color and the other is the contrasting color. After the outer surface of the mast body is completely coated with the main color, the contrasting color spots are coated to form a stealth camouflage pattern. The main color of the visible light stealth coating is similar to the color of the ocean background. The spotted camouflage pattern improves the integration with the actual ocean background, and the combined effect improves the visible light stealth performance of the mast.
[0024] The mast body is composed of multiple parts and is used to carry antennas, radars and other equipment. Due to the installation requirements of the equipment, it is designed with connection structures such as flanges. Its outer surface is composed of multiple surfaces such as planes, cylindrical surfaces, and three-dimensional curved surfaces. The surface is complex and discontinuous.
[0025] For example, the camouflage pattern designed by the traditional graphic design method cannot be directly used to make the construction drawing template. In actual construction, the camouflage pattern is usually drawn on the mast by comparing with the two-dimensional drawing and then constructed. This process involves manual conversion, which inevitably causes deviations between the actual pattern and the designed pattern, resulting in poor mast camouflage pattern effect and affecting the integration of the mast with the ocean background. Therefore, in this embodiment, through the conversion of three-dimensional model-two-dimensional template-three-dimensional object, the consistency of the produced camouflage pattern and the designed camouflage pattern is ensured, and the efficiency and quality of camouflage pattern design and production are improved.
[0026] Specifically, in step S10, the average value of the major axis size of the spot is d, d=constant coefficient×D, D is the observation distance of the detection equipment to the mast, the average value of the major and minor axis ratio of the spot is e, and the major and minor axis sizes of the spot are generated according to the normal distribution with the average value as the center to obtain a series of spot sizes.
[0027] In step S20, when creating spots based on the surface model, it specifically includes: Make an auxiliary plane tangent to the surface at the design spot; Make a sketch on the auxiliary plane, the sketch is an ellipse, and the size of the major and minor axes of the ellipse is obtained by the step of determining the spot size of the camouflage pattern according to the observation distance of the detection equipment to the mast; Project the sketch on the auxiliary plane onto the surface of the surface model; Complete all spot designs in the same way, with the spots evenly distributed on the model (the spots should not be symmetrical front to back, left to right, or top to bottom).
[0028] In addition, in step S30, the spots of the physical pattern template are hollowed out to provide a contrasting color for subsequent coating of the visible light stealth coating.
[0029] In step S20, in the step of unfolding the surface of the curved surface model into two-dimensional planes, the complex curved surface model is unfolded into multiple planes. In the three-dimensional design software, the three-dimensional solid model of the mast body is subjected to surface extraction to obtain a curved surface model including all surfaces.
[0030] Step S40, before the step of spraying the mast body with the main color of the visible light stealth coating, further includes: Step S31, performing surface treatment on the outer surface of the mast body.
[0031] Specifically, the surface treatment includes sandblasting, grinding or roughening. That is to say, the surface treatment can be sandblasting plus grinding, or sandblasting plus roughening.
[0032] After surface treatment, the surface is required to be free of oil, water, dust or other pollutants before spraying to ensure the spraying effect.
[0033] The following is a specific implementation process: 1. Determine the average value d of the major axis size of the spot based on the observation distance D of the mast by the commonly used detection equipment, d ≥ constant coefficient × D, the average value of the major and minor axis ratio of the spot is e, and generate the major and minor axis sizes of the spot according to the normal distribution with the average value as the center to obtain a series of spot sizes.
[0034] 2. In the 3D design software, perform surface extraction on the 3D solid model of the mast body to obtain a surface model including all surfaces.
[0035] 3. Draw the spot outline on the surface model. First, make an auxiliary plane tangent to the surface where the spot is designed; then make a sketch on the auxiliary plane. The sketch is in the shape of an ellipse, and the major and minor axis dimensions of the ellipse are generated in step 1; finally, project the sketch on the auxiliary plane onto the surface of the surface model. Since the surface model is composed of multiple faces, one sketch may be projected onto multiple surfaces.
[0036] All spots should be designed in the same way. The spots should be evenly distributed on the model and should not be symmetrical front to back, left to right, or top to bottom. In areas where the surface is discontinuous, the spots should be appropriately arranged to make them visually integrated.
[0037] 4. Expand the surface of the surface model into a plane. Complex models can be expanded into multiple planes. Plane graphics are used to make pattern templates, and the spots on the pattern templates are hollowed out.
[0038] 5. The outer surface of the mast body is surface treated, requiring the surface to be free of oil, water, dust or other pollutants. The surface is sandblasted, polished or roughened, and then sprayed with the main color of the visible light stealth coating.
[0039] 6. After the main color is dry, cover the surface of the mast body with the pattern template made in step 4, and apply the contrasting color of the visible light stealth coating on the spots. After the coating is dry, remove the pattern template.
[0040] The camouflage pattern manufacturing method of the ship's stealth mast proposed by the present invention has the following beneficial effects: (1) The camouflage pattern is designed by using 3D software, then expanded into a 2D drawing and directly used to make a drawing template. The drawing template is then wrapped onto the 3D entity of the mast body. Through the conversion of 3D model-2D template-3D entity, the consistency of the produced camouflage pattern with the designed camouflage pattern is ensured, thereby improving the efficiency and quality of camouflage pattern design and production; (2) The mast made by this production method is similar to the ocean background in terms of spectral data such as brightness contrast and metamerism index, and the pattern fusion is good, which has a good stealth effect; (3) By producing a camouflage pattern that is not a single color, it can adapt to the actual ocean surface that is not a simple single color due to factors such as waves and sunlight reflection, and further improve the integration of the mast with the actual ocean background.
[0041] The present invention further provides a ship-used stealth mast.
[0042] Reference Figures 2 to 4 In this preferred embodiment, a ship stealth mast includes a mast body 1 and a visible light stealth coating coated on the outside of the mast body 1. The visible light stealth coating is made using the above-mentioned camouflage pattern making method for the ship stealth mast.
[0043] The surface of the mast body 1 can be made of stainless steel, radar absorbing coating or composite material according to the requirements of structural design, radar wave stealth design, etc., and its surface color is black, stainless steel metal color, etc.
[0044] Specifically, the visible light stealth coating is formed by coating the surface of the mast body 1 with a visible light stealth coating, the coating is formulated with pigment particles and a binder, the main color is similar to the ocean background (the color and spectral characteristics of the ocean can be obtained, and then the pigment particles are mixed according to the obtained color and spectral characteristics of the ocean, and the stealth function is achieved through the color and spectral characteristics of the obtained main color), and the contrasting color is generally black.
[0045] In this embodiment, the visible light stealth coating includes a main color 2 and spots 3, and the spots 3 are all elliptical patterns. The main color 2 of the visible light stealth coating film is designed according to the ocean background color, and the spectral data of the two are close, which has a good visible light stealth effect. On the basis of the main color 2, contrasting color spots 3 are added. The spots 3 are elliptical, with different shapes and sizes, and are distributed on all outer surfaces of the mast. Because the actual ocean surface is affected by factors such as waves and sunlight reflection, it is not a simple single color. In order to improve the integration of the mast with the actual ocean background, it is necessary to design a camouflage pattern and then apply the visible light stealth coating according to the pattern.
[0046] The marine stealth mast proposed by the present invention has the following beneficial effects: 1) Because the mast surface is coated with a visible light stealth coating, which is coated according to a camouflage pattern, the mast and the ocean background are similar in spectral data such as brightness contrast and metamerism index, and the pattern fusion is good, which has a good stealth effect; 2) The camouflage pattern is designed using 3D software, then expanded into a 2D drawing and directly used to make a drawing template. The drawing template is then wrapped onto the 3D entity of the mast body 1. Through the conversion of 3D model-2D template-3D entity, the consistency of the produced camouflage pattern with the designed camouflage pattern is ensured, thereby improving the efficiency and quality of camouflage pattern design and production.
[0047] The present invention is applicable to underwater vehicles, especially to the occasions with high requirements on visible light stealth performance.
[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A method for producing a camouflage pattern of a ship's stealth mast, characterized in that: The following steps are involved: The spot size of the camouflage pattern is determined based on the observation distance of the detection equipment to the mast; Performing surface extraction on the three-dimensional solid model of the mast body to obtain a curved surface model including all surfaces, making spots on the curved surface model, unfolding the surface of the curved surface model into a two-dimensional plane, and obtaining a two-dimensional pattern template; A physical pattern template containing spots of a camouflage pattern is produced according to the two-dimensional pattern template; The mast body is sprayed with the main color of the visible light stealth coating, the solid pattern template is covered on the surface of the mast body, the contrasting color of the visible light stealth coating is applied to the spots, and then the solid pattern template is removed.
2. The method for making a camouflage pattern of a ship's stealth mast according to claim 1, characterized in that: In the step of determining the spot size of the camouflage pattern according to the observation distance of the detection device to the mast, The average value of the major axis size of the spot is d, d=constant coefficient × D, D is the observation distance of the detection equipment to the mast, the average value of the major and minor axis ratio of the spot is e, and the major and minor axis sizes of the spot are generated according to the normal distribution with the average value as the center to obtain a series of spot sizes.
3. The method for making a camouflage pattern of a ship's stealth mast according to claim 1, characterized in that: When making spots based on a surface model, it specifically includes: Make an auxiliary plane tangent to the surface at the design spot; Make a sketch on the auxiliary plane, the sketch is an ellipse, and the size of the major and minor axes of the ellipse is obtained by the step of determining the spot size of the camouflage pattern according to the observation distance of the detection equipment to the mast; Project the sketch on the auxiliary plane onto the surface of the surface model; Complete all spot designs in the same way, and the spots are evenly distributed on the model.
4. The method for making a camouflage pattern of a ship stealth mast according to claim 1, characterized in that: The spots of the solid pattern template are hollowed out to provide contrasting colors for subsequent coating of the visible light stealth coating.
5. The method for making a camouflage pattern of a ship's stealth mast according to claim 1, characterized in that: In the step of unfolding the surface of the curved surface model into a two-dimensional plane, the complex curved surface model is unfolded into multiple planes.
6. The method for making a camouflage pattern of a ship's stealth mast according to any one of claims 1 to 5, characterized in that: The step of spraying the mast body with the main color of the visible light stealth coating also includes: The outer surface of the mast body is surface treated.
7. The method for making a camouflage pattern of a ship's stealth mast according to claim 6, characterized in that: The surface treatment includes sandblasting, grinding or roughening.
8. A stealth mast for a ship, characterized in that: It comprises a mast body and a visible light stealth coating applied on the outside of the mast body, wherein the visible light stealth coating is made by using the camouflage pattern making method for a ship stealth mast as described in any one of claims 1 to 7.
9. The ship stealth mast according to claim 8, characterized in that: The visible light stealth coating includes a main color and a contrasting color, and the contrasting colors are all elliptical spot patterns.
10. The ship stealth mast according to claim 9, characterized in that: The visible light stealth coating is formed by coating the surface of the mast with a visible light stealth coating, the visible light stealth coating is prepared from pigment particles and a binder, and the main color and the contrasting color are prepared separately.