CN204834889U - Super material structure , covering and aircraft - Google Patents
Super material structure , covering and aircraft Download PDFInfo
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- CN204834889U CN204834889U CN201520344168.4U CN201520344168U CN204834889U CN 204834889 U CN204834889 U CN 204834889U CN 201520344168 U CN201520344168 U CN 201520344168U CN 204834889 U CN204834889 U CN 204834889U
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Abstract
The utility model provides a super material structure, covering and aircraft should include by super material structure: the medium base plate, the setting is at the metal backplate at the back of this medium base plate, and the positive a plurality of electrically conductive geometry along first direction and the range of second orientation who sets up at this medium base plate, every electrically conductive geometry is inside and outside nested structure, and these a plurality of electrically conductive geometry are divided into a plurality of electrically conductive geometry groups, and in each electrically conductive geometry group, each electrically conductive geometry's dimension parameter gradually changes in a centripetal orientation of this first direction or this second side at least.
Description
Technical field
The utility model relates to field of functional materials, particularly relates to a kind of metamaterial structure and covering and comprises the aircraft of this covering.
Background technology
The modern detection such as radar, millimeter wave, infrared, laser, multispectral and sound wave and guidance technology are widely used in national defense system, cause great threat to the existence of aircraft, naval vessels, tank and other equipment.
Absorbing material technology, as improving defence equipment existence and penetration ability, improving the effective means of equipping stealth capabilities, improving overall fighting efficiency, is subject to the great attention of great powers in the world.But traditional single antiradar coatings, the limitation such as inhale ripple band limiting, efficiency is low, weight is large, temperature tolerance is poor, can not meet the requirement of Technology for Modern Equipment to wave-absorbing and camouflage integration.Therefore, the focus that ripple is wide, efficiency is high, density is little absorbing material has become whole world research is inhaled.
Structure Wave suction composite material is the structure/function integration composite material simultaneously with bearing capacity and absorbing property, and external advanced invisbile plane has started to widely apply structure Wave suction composite material.On F-117A, B-2, F-22 stealthy aircraft, structural wave-absorbing material consumption is respectively 10%, and 50%, 70%.Can say, the development of structural wave-absorbing material affects the future of stealth material and even whole stealth technology to a great extent.
Traditional structure Wave suction composite material is owing to depending on the electromagnetic consumable (dielectric parameter and magnetic permeability imaginary part) of basis material, make construction weight and thickness all cannot meet the constraint (thickness usually needs is less than 1mm, and density of texture is less than aluminium or the multiple material covering of carbon fibre) of Flight Vehicle Structure and covering.
Utility model content
In order to solve the problem, the utility model aims to provide a kind of Meta Materials and covering and comprises the aircraft of this covering.
According to one side of the present utility model, provide a kind of Meta Materials, comprising:
Medium substrate;
Be arranged on the metal backing at the back side of this medium substrate; And
Multiple conduction geometries that the front being arranged on this medium substrate arranges along first direction and second direction, each conduction geometry is inside and outside nested structure, the plurality of conduction geometry is divided into multiple conduction geometry group, in each conduction geometry group, respectively the direction of the dimensional parameters of conduction geometry at least in this first direction or this second direction gradually changes.
In one example, in all conduction geometry groups, the dimensional parameters of each conduction geometry all gradually changes on this first direction and this second direction; Or in all conduction geometry groups, the dimensional parameters of each conduction geometry gradually changes on the direction of this first direction with this second direction, and other direction remains unchanged.
In one example, in partially conductive geometry group, the dimensional parameters of each conduction geometry all gradually changes on this first direction and this second direction, and in other conduction geometry groups, the dimensional parameters of each conduction geometry gradually changes on the direction of this first direction with this second direction, and other direction remains unchanged.
In one example, in each conduction geometry group, the dimensional parameters of an each conduction geometry direction at least in this first direction or this second direction increases gradually or reduces gradually or increase and reduce to replace successively.
In one example, each conduction geometry is nested structure inside and outside being made up of two 90 ° of rotational symmetric structures.
In one example, these 90 ° of rotational symmetric structures are hollow cross structure.
In one example, this dimensional parameters comprises the spacing between the width of the lines surrounding hollow cross structure, the shoulder height of hollow cross structure and shoulder breadth and inside and outside hollow cross structure.
In one example, these 90 ° of rotational symmetric structures are circular rings or Q-RING or regular hexagon ring or octagon ring.
In one example, the plurality of conduction geometry arranges along this first direction and this second direction with uniform center distance.
In one example, the conduction geometric structure diamete parameter gradual-change mode of each conduction geometry group is identical or different.
In one example, the plurality of conduction geometry is made up of metal material.
In one example, the plurality of conduction geometry by etching, plating, engraving, evaporation, sputtering, silk-screen, brill quarter, photoetching, electronics carves or ion carving technology is attached on this medium substrate.
In one example, each conduction geometry group has the conduction geometry of identical number in this first direction and this second direction.
According to another aspect of the present utility model, additionally provide a kind of covering, comprise Meta Materials as above.
According to one side more of the present utility model, additionally provide a kind of aircraft, comprise covering as above.
According to Meta Materials of the present utility model, there is lower scattering properties, under monostatic radar irradiates, electromagnetic wave fully departs from through the reflection direction of Meta Materials and incident direction, radar cannot be received and maybe can only receive faint reflection echo signal, thus have good stealth effect to radar.And not rely on the electromagnetic consumable of basis material to absorb incident electromagnetic wave according to Meta Materials of the present utility model, thus avoid traditional Wave suction composite material not only heavily but also thick shortcoming, there is lightweight, that thickness is thin advantage, weight, the thickness requirements of aircraft to covering can be met.And, according to Meta Materials of the present utility model, there is wider working band, good radar invisible effect can be played in frequency range in a big way.
Accompanying drawing explanation
After the detailed description of reading embodiment of the present disclosure in conjunction with the following drawings, more can understand above-mentioned feature and advantage of the present utility model better.
Fig. 1 shows the schematic diagram of the Meta Materials according to one side of the present utility model;
Fig. 2 shows the schematic diagram of the arrangement of the conduction geometry according to one side of the present utility model;
Fig. 3 shows the enlarged diagram of the conduction geometry according to specific embodiment;
Fig. 4 a, 4b show traditional covering and according to covering of the present utility model to electromagnetic Beam Scattering schematic diagram;
Fig. 5 a shows the curve chart of the reflectance measurements of the covering provided according to the utility model; And
Fig. 5 b shows the RCS polarization diagram of covering under 8GHz provided according to the utility model.
For clarity sake, the brief description of Reference numeral is below provided:
100: Meta Materials
101: conduction geometry
102: medium substrate
103: metal backing
110: conduction geometry group
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.Note, the aspects described below in conjunction with the drawings and specific embodiments is only exemplary, and should not be understood to carry out any restriction to protection range of the present utility model.
By medium substrate and be arranged on Meta Materials that the artificial conduction geometry on substrate forms for realizing high wave beam deviation rate, small size, the simple skin material of structure provide direction.
Meta Materials is as a kind of by medium substrate and the man-made microstructure be arranged on substrate, and the artificial material that the geometry that such as conducts electricity forms, has the extraordinary physical property that some natural materials do not possess.Artificial conduction geometry, under the yardstick of size 1/5 to 1/10 wavelength, has electroresponse and magnetic response to extra electric field and magnetic field, thus makes Meta Materials show effective dielectric constant and equivalent permeability on the whole.By designing the pattern of each conduction geometry and/or size and being arranged according to certain rules by conduction geometry, the electromagnetic parameter of material monolithic is made to be certain rule arrangement.The electromagnetic parameter of rule arrangement makes Meta Materials have response macroscopically to electromagnetic wave, such as, converges electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption, deviation electromagnetic wave etc.
Fig. 1 shows the schematic diagram of the Meta Materials 100 according to one side of the present utility model.As shown in Figure 1, Meta Materials 100 can comprise medium substrate 102, is arranged on the metal backing at the back side of medium substrate 102 and is arranged on multiple conduction geometries 101 in front of medium substrate 102.
Medium substrate 102 can be made up of ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Conduction geometry 101 can be made up of electric conducting material, and is attached on medium substrate 102 by etching, plating, engraving, evaporation, sputtering, silk-screen, brill quarter, photoetching, electronics quarter or ion carving technology.Conduction geometry 101 can be made up of metal material.
Fig. 2 shows the schematic diagram of the arrangement of the conduction geometry according to one side of the present utility model.As shown in Figure 2, the geometry 101 that conducts electricity is arranged on medium substrate 102 along first direction and second direction arranges.First direction and second direction can be x-axis direction as shown in the figure and y-axis direction, and both can be mutually orthogonal.Z-axis direction is perpendicular to the outside direction of paper.As shown in Figure 2, each conduction geometry is arranged with uniform center distance, i.e. distance between the center of adjacent two conduction geometries is consistent.
According to one side of the present utility model, conduction geometry 101 is inside and outside nested structure, such as, be nested structure inside and outside being made up of two 90 ° of rotational symmetric structures.In the example shown in figure 2, these 90 ° of rotational symmetric structures are hollow cross structure.But in other embodiments, these 90 ° of rotational symmetric structures can be such as annulus, Q-RING, regular hexagon ring, octagon ring etc.
According to one side of the present utility model, at least one direction in the first and second directions is gradual change for the dimensional parameters of each conduction geometry 101, such as, increase gradually or reduce gradually or increase and reduce to replace successively.Such as, in the example shown in figure 2, the dimensional parameters of each conduction geometry 101 is gradual change in the x direction, and dimensional parameters remains unchanged in y-direction.But this is only an example, each conduction geometry 101 also all can have the dimensional parameters of gradual change on x and y direction.
Specifically, multiple conduction geometry group 110 is divided at each conduction geometry 101.These groups 110 alignment on x, y direction.As shown in Figure 2, these groups 110 have the conduction geometry 101 of identical number on x, y direction, but in other instances, x, y direction also can have the conduction geometry 101 of different number.For simplicity, in Fig. 2, illustrate only 4 conduction geometry groups 110, but, more conduction geometry group 110 and conduction geometry 101 can be there is.
In each group 110, be arranged with some conduction geometries 101 along x, y direction, such as, 5x5 conduction geometry shown in Fig. 2.In units of a conduction geometry group 110, in this conduction geometry group 110, respectively the direction of the dimensional parameters of conduction geometry 101 at least in the first and second directions gradually changes.
For the conduction geometry 101 shown in Fig. 2, this conduction geometry 101 forms by two hollow cross structures are nested, and its enlarged drawing as shown in Figure 3.Identify the dimensional parameters of this conduction geometry 101 in figure 3.Each hollow cross structure surrounded by lines (such as, bonding jumper) complications.In this example, the dimensional parameters of conduction geometry 101 can comprise the d1 of the width of lines.In addition, dimensional parameters also can comprise shoulder height d2 and the shoulder breadth d3 of surrounded hollow cross structure four shoulders.In addition, the spacing d4 between inside and outside two hollow cross structures also belongs to dimensional parameters.
In example as shown in Figure 2, in all conduction geometry groups 110, the dimensional parameters of each conduction geometry 101 only gradually changes in the x direction, and remains unchanged in y-direction.But in another example, in all conduction geometry groups 110, the dimensional parameters of each conduction geometry 101 all gradually changes in the x and y direction.Or, in another other examples, in the group 110 of a part, the dimensional parameters of each conduction geometry 101 only in one direction (such as, x or y direction) on gradually change, and to remain unchanged on other direction (such as, y direction or x direction); And in the group 110 of another part, the dimensional parameters of each conduction geometry 101 all gradually changes in the x and y direction.
In addition, in example as shown in Figure 2, the conduction geometric structure diamete parameter gradual-change mode of each conduction geometry group 110 is identical, such as, the dimensional parameters gradual change of the conduction geometry of 4 conduction geometry groups 110 in Fig. 2 constantly repeats to conduct electricity in units of geometry group 110.
Certainly in other instances, the conduction geometric structure diamete parameter gradual-change mode of each conduction geometry group 110 also can be mutually different.As mentioned above, in some conduction geometry groups 110, conduction geometric structure diamete parameter only changes in one direction, and in other conduction geometry groups 110, the gradual change in the two directions of conduction geometric structure diamete parameter.Or in some conduction geometry groups 110, on such as first direction, dimensional parameters is large from little change, and in other conduction geometry groups 110, dimensional parameters is from diminishing greatly in a first direction, etc.
According to Meta Materials 100 of the present utility model, due to the gradual change of the dimensional parameters of conduction geometry 101, make the resonance frequency difference to some extent of each conduction geometry 101, so the delayed phase of often on this gradual change direction can be different, therefore the deviation of certain angle will be had in such as XZ plane (phi direction) reflected beam relative to incident wave.Simultaneously because each construction unit contains inside and outside two nested structures, deviation effect can be produced under two different frequencies, so working band can broadening greatly.
The utility model additionally provides a kind of covering, and this covering can comprise the Meta Materials of above-mentioned discussion, thus the accomplished covering to electromagnetic deviation.In addition, the utility model also provides a kind of aircraft, and this aircraft uses the covering of above-mentioned discussion.
Fig. 4 a, 4b respectively illustrate traditional covering and according to wave beam deviation covering of the present utility model to electromagnetic Beam Scattering schematic diagram.From Fig. 4 a, traditional metal skin under normal incidence ripple irradiates, incident wave and reflected wave in same angle direction contrary, so be recovered to very large echo (usually measuring by RCS) under monostatic radar irradiates.But, from Fig. 4 b, shine the reflected phase will difference of the normal incidence ripple on wave beam deviation skin material due to each unit, so there is certain angle (usually having a few to tens of to spend) on reflected wave corrugated (equiphase surface) and incident wave corrugated.Therefore under monostatic radar irradiates, reflection direction and incident direction depart from, and radar cannot receive and maybe can only receive faint reflection echo signal.
By the time domain solver of finite element emulation software CST2011, the Radar cross-section redu-ction (RCSR) of the wave beam deviation covering opposed metallic surfaces of utilization Meta Materials as shown in Figure 2 can be calculated.From Fig. 5 a, within the frequency range of 7 ~ 10GHz, radar scattering has all been decayed more than 10dB, and some frequency reaches 20dB, and effect clearly.Fig. 5 b shows the scattering polarization diagram at 8GHz wave beam deviation covering, and as can be seen from the figure, under normal incidence, deviation covering creates a scattering main lobe at 33 degree, this main cause that namely RCS reduces in Fig. 5 a.
According to Meta Materials of the present utility model, there is lower scattering properties, there is wider working band, and weight, the thickness requirements of aircraft to covering can be met.
Description before providing is to make any technical staff in this area all can put into practice various aspects described herein.But should be appreciated that, protection range of the present utility model should be as the criterion with claims, and should not be defined to concrete structure and the assembly of above explained orally embodiment.Those skilled in the art, in spirit and scope of the present utility model, can carry out various variation and amendment to each embodiment, and these variations and amendment also drop within protection range of the present utility model.
Claims (15)
1. a metamaterial structure, is characterized in that, comprising:
Medium substrate;
Be arranged on the metal backing at the back side of described medium substrate; And
Multiple conduction geometries that the front being arranged on described medium substrate arranges along first direction and second direction, each conduction geometry is inside and outside nested structure, described multiple conduction geometry is divided into multiple conduction geometry group, in each conduction geometry group, respectively the direction of the dimensional parameters of conduction geometry at least in described first direction or described second direction gradually changes.
2. metamaterial structure as claimed in claim 1, is characterized in that, in all conduction geometry groups, the dimensional parameters of each conduction geometry all gradually changes on described first direction and described second direction; Or in all conduction geometry groups, the dimensional parameters of each conduction geometry gradually changes on a direction of described first direction and described second direction, and other direction remains unchanged.
3. metamaterial structure as claimed in claim 1, it is characterized in that, in partially conductive geometry group, the dimensional parameters of each conduction geometry all gradually changes on described first direction and described second direction, and in other conduction geometry groups, the dimensional parameters of each conduction geometry gradually changes on a direction of described first direction and described second direction, and other direction remains unchanged.
4. metamaterial structure as claimed in claim 1, it is characterized in that, in each conduction geometry group, the dimensional parameters of an each conduction geometry direction at least in described first direction or described second direction increases gradually or reduces gradually or increase and reduce to replace successively.
5. metamaterial structure as claimed in claim 1, it is characterized in that, each conduction geometry is nested structure inside and outside being made up of two 90 ° of rotational symmetric structures.
6. metamaterial structure as claimed in claim 5, it is characterized in that, described 90 ° of rotational symmetric structures are hollow cross structure.
7. metamaterial structure as claimed in claim 6, it is characterized in that, described dimensional parameters comprises the spacing between the width of the lines surrounding hollow cross structure, the shoulder height of hollow cross structure and shoulder breadth and inside and outside hollow cross structure.
8. metamaterial structure as claimed in claim 5, is characterized in that, described 90 ° of rotational symmetric structures are circular rings or Q-RING or regular hexagon ring or octagon ring.
9. metamaterial structure as claimed in claim 1, is characterized in that, described multiple conduction geometry arranges along described first direction and described second direction with uniform center distance.
10. metamaterial structure as claimed in claim 1, is characterized in that, the conduction geometric structure diamete parameter gradual-change mode of each conduction geometry group is identical or different.
11. metamaterial structures as claimed in claim 1, is characterized in that, described multiple conduction geometry is made up of metal material.
12. metamaterial structure as claimed in claim 11, is characterized in that, described multiple conduction geometry is attached on described medium substrate by etching, plating, engraving, evaporation, sputtering, silk-screen, brill quarter, photoetching, electronics quarter or ion carving technology.
13. metamaterial structures as claimed in claim 1, is characterized in that, each conduction geometry group has the conduction geometry of identical number at described first direction and described second direction.
14. 1 kinds of coverings, is characterized in that, comprise the metamaterial structure as described in any one of claim 1-13.
15. 1 kinds of aircraft, is characterized in that, comprise covering as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344168.4U CN204834889U (en) | 2015-05-26 | 2015-05-26 | Super material structure , covering and aircraft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520344168.4U CN204834889U (en) | 2015-05-26 | 2015-05-26 | Super material structure , covering and aircraft |
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| CN204834889U true CN204834889U (en) | 2015-12-02 |
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| CN201520344168.4U Active CN204834889U (en) | 2015-05-26 | 2015-05-26 | Super material structure , covering and aircraft |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299720A (en) * | 2015-05-26 | 2017-01-04 | 深圳光启高等理工研究院 | Meta Materials, eyelid covering and aircraft |
| CN111555034A (en) * | 2020-05-15 | 2020-08-18 | 中国航空工业集团沈阳飞机设计研究所 | Broadband gradient phase design method and metamaterial |
| EP4054003A1 (en) * | 2021-03-05 | 2022-09-07 | VIAVI Solutions Inc. | Micro-sized metamaterial absorbers |
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2015
- 2015-05-26 CN CN201520344168.4U patent/CN204834889U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299720A (en) * | 2015-05-26 | 2017-01-04 | 深圳光启高等理工研究院 | Meta Materials, eyelid covering and aircraft |
| CN111555034A (en) * | 2020-05-15 | 2020-08-18 | 中国航空工业集团沈阳飞机设计研究所 | Broadband gradient phase design method and metamaterial |
| CN111555034B (en) * | 2020-05-15 | 2022-09-30 | 中国航空工业集团公司沈阳飞机设计研究所 | Broadband gradient phase design method and metamaterial |
| EP4054003A1 (en) * | 2021-03-05 | 2022-09-07 | VIAVI Solutions Inc. | Micro-sized metamaterial absorbers |
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