CN111969315A - Layering transition structure of five-layer structure antenna housing - Google Patents
Layering transition structure of five-layer structure antenna housing Download PDFInfo
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- CN111969315A CN111969315A CN202010875378.1A CN202010875378A CN111969315A CN 111969315 A CN111969315 A CN 111969315A CN 202010875378 A CN202010875378 A CN 202010875378A CN 111969315 A CN111969315 A CN 111969315A
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- Prior art keywords
- skin
- layer
- honeycomb
- radome
- transition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
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Abstract
The invention discloses a layering transition structure of a five-layer structure radome, which comprises an outer skin, an outer honeycomb, a middle skin, an inner honeycomb, an inner skin, a bearing belt and fillers, wherein the layering transition structure is divided into an electrical performance working area, a transition area and a radome connection area; in the transition region, the thickness of the inner honeycomb between the inner skin and the middle skin is changed from the electrical design thickness to 0, the lattice holes of the inner honeycomb are filled with fillers, and the outer honeycomb between the outer skin and the middle skin has the same thickness; in the radome connecting area, the inner skin is directly attached to the middle skin, and a bearing belt with the same thickness is arranged between the middle skin and the outer skin.
Description
Technical Field
The invention relates to the technical field of radar radome design, in particular to a layer-spreading transition structure of a five-layer radome.
Background
The existing five-layer structure radome root transition structure generally needs to be transited from 5 layers to 5 layers, and has certain limitation on the length of a transition region, large forming difficulty and poor manufacturability.
The invention relates to a layer transition structure of a five-layer structure radome, which can effectively improve the manufacturability of a transition region of a 5-layer structure radome, reduce the length of the transition region and greatly improve the structural efficiency of the radome.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a layer transition structure of a five-layer structure radome, which can meet the radome transition requirements under the conditions that the root thickness changes violently and the length of a transition region is limited.
The technical scheme of the invention is as follows:
a layer transition structure of a five-layer structure radome comprises an outer skin, an outer honeycomb, a middle skin, an inner honeycomb, an inner skin, a bearing belt and fillers, wherein the layer transition structure is divided into an electrical property working area, a transition area and a radome connection area; in the transition region, the thickness of the inner honeycomb between the inner skin and the middle skin is changed from the electrical design thickness to 0, the lattice holes of the inner honeycomb are filled with fillers, and the outer honeycomb between the outer skin and the middle skin has the same thickness; and in the radome connecting area, the inner skin is directly attached to the middle skin, and a bearing belt with the same thickness is arranged between the middle skin and the outer skin.
Further, the filler is a syntactic foam.
Further, the inner honeycomb is aramid paper honeycomb.
Further, the outer layer honeycomb is aramid paper honeycomb.
Further, the inner skin is a resin-impregnated prepreg of a glass fiber fabric.
Further, the outer skin is a resin-impregnated prepreg of a glass fiber fabric.
Further, the middle skin is a resin-impregnated ethylene-glass fiber fabric prepreg.
Further, the inner, outer and middle skins are molded at medium or high temperature.
Furthermore, the medium temperature is 80-130 ℃ and the high temperature is more than 130 ℃.
The invention has the beneficial effects that:
the invention provides a layer transition structure of a five-layer structure radome, which can meet the radome transition requirements under the conditions of severe root thickness change and limited transition region length.
Drawings
FIG. 1 is a structural cross-sectional view of the present invention;
wherein: 1. an outer skin; 2. outer layer honeycombs; 3. a middle skin; 4. an inner layer honeycomb; 5. an inner skin; 6. a force-bearing belt; 7. and (4) filling materials.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:
as shown in fig. 1, a layering transition structure of a five-layer structure radome comprises an outer skin 1, an outer honeycomb 2, a middle skin 3, an inner honeycomb 4, an inner skin 5, a force-bearing belt 6 and a filler 7; the outer skin 1 is positioned at the outermost part of the transition structure, the inner skin 5 is positioned at the innermost part of the transition structure, the middle skin 3 is positioned between the outer skin 1 and the inner skin 5, the force-bearing belt 6 is positioned between the outer skin 1 and the middle skin 3, wherein, the thickness of the middle skin 3 is larger than that of the outer skin 1 and the inner skin 5, which not only can be used for separating the inner honeycomb 4 from the outer honeycomb 2, but also has stronger supporting function, the inner honeycomb 4, the outer honeycomb 2, the middle skin 3 and the force-bearing belt 6 between the inner skin and the outer skin are respectively bonded with the adjacent parts by adhesives, the adhesives can adopt thermosetting resin adhesives, thermoplastic resin adhesives, synthetic rubber resin adhesives or mixed adhesives, the adhesive has good bonding capability, heat resistance and corrosion resistance, and is widely applied to the technical fields of aviation, ships, electronic communication and the like. The inner and outer skins fix the honeycomb and the bearing belt 6 inside the inner and outer skins, the transition structure is used as a part of the radome, the manufacturability of a transition region at the root of the radome with a 5-layer structure is improved, the problem of honeycomb bridging caused by severe thickness change is avoided, and the production can be directly guided.
In fig. 1, the layer transition structure is divided into three parts, namely an electrical performance working area, a transition area and an antenna housing connection area, the transition area is a transition section of the layer transition structure from the electrical performance working area to the antenna housing connection area, the range of the area is smaller than that of the other two areas, in the electrical performance working area, an inner layer honeycomb 4 between an inner skin 5 and a middle skin 3 is equal in thickness, and an outer layer honeycomb 2 between an outer skin 1 and the middle skin 3 is equal in thickness; in the transition region, the thickness of the inner-layer honeycomb 4 between the inner skin 5 and the middle skin 3 is changed from the electrical design thickness to 0, the cell holes of the inner-layer honeycomb 4 are filled with fillers 7, the fillers 7 can support the inner-layer honeycomb 4 in the transition region, the region with smaller thickness is ensured to have enough mechanical strength, and the outer-layer honeycomb 2 between the outer skin 1 and the middle skin 3 has the same thickness; at the antenna house joining region, interior covering 5 and well covering 3 are directly laminated, no longer set up bearing area 7 between interior covering 5 and the well covering 3, and the bearing area 6 of thickness such as setting up between well covering 3 and the outer covering 1 can realize the transition from 5 layers of structure antenna house to 4 layers of structure antenna house, compares with the transition of 5 layers of structure to 5 layers of structure, reduces the shaping of bearing area 6 once, simultaneously, can realize the transition demand of the violent antenna house of thickness change again.
The inner skin 5, the outer skin 1 and the middle skin 3 are all made of resin-impregnated ethylene-glass fiber fabric prepreg, and the ethylene-glass fiber fabric prepreg has the characteristics of low specific gravity, high electric strength resistance, high temperature resistance, low thermal expansion coefficient, high resistance and stability, high appearance stability, high elastic modulus, high dynamic strength and low thermal conductivity.
The inner skin 5, the outer skin 1 and the middle skin 3 are all formed by paving and pasting a plurality of fiberglass fabric prepregs, vacuum heating and curing, a vacuum heating and curing tool is an oven or an autoclave, the vacuum degree is not less than 0.1MPa, the curing temperature is that the prepregs are cured in an environment with the temperature of 80-130 ℃ or the temperature of more than 130 ℃, the curing pressure is 0.3MPa, the curing pressure and the curing temperature last for 2 hours, and after the skins are cured, the edges of the protective structure layer are polished by using sand paper to be smooth.
The inner layer honeycomb 4 and the outer layer honeycomb 2 are aramid paper honeycombs and are used as a part of the radome, the aramid paper honeycombs are non-metal light honeycomb core materials which are made of aramid paper through a series of steps of gluing, laminating, pressing, stretching, shaping, gum dipping, curing, sheet cutting and the like, and the non-metal light honeycomb core materials have the advantages of light volume weight, high specific strength and specific rigidity, strong shock resistance, outstanding corrosion resistance and self-extinguishing property, environment resistance and insulating property of oil mass, unique rebound resilience and absorbed vibration energy, good high-temperature stability and good electromagnetic wave transmission performance, and meet the index requirements of airplanes.
The filler 7 is composite foam, the composite foam has the characteristics of low density, high strength and light weight, and can play a better supporting role when being applied to the invention, the weight of the antenna housing can be reduced, the weight of the whole machine is reduced, the composite foam material of the filler 7 can be designed into hollow fillers in various shapes, such as hollow glass microspheres, plastic microspheres, ceramic microspheres and the like, and the shapes can be designed into spherical shapes or hexagonal shapes and are matched with the shapes of the inner layer honeycomb grid holes.
Meanwhile, the bearing belt 3 is used as a main bearing framework of the antenna housing, so that sufficient mechanical strength is provided for a connecting area of the antenna housing, and the antenna housing is firmly connected with the airplane body.
The layering transition structure can realize the transition from a radome with a 5-layer structure to a radome with a 4-layer structure, and reduces the molding of a one-time bearing belt compared with the transition from the radome with the 5-layer structure to the radome with the 5-layer structure. Meanwhile, the transitional requirement of the radome with violent thickness change can be met. The invention relates to a layer transition structure of a five-layer structure radome, which can meet the transition requirements of harsh requirements on an electrical performance working area and severe thickness change of the radome.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (9)
1. The utility model provides a layer transition structure that spreads of five-layer structure antenna house which characterized in that: the electric-property-based composite structural layer comprises an outer skin (1), an outer honeycomb (2), a middle skin (3), an inner honeycomb (4), an inner skin (5), a bearing belt (6) and fillers (7), wherein the layer transition structure is divided into an electric-property working area, a transition area and an antenna cover connection area, and in the electric-property working area, the inner honeycomb (4) between the inner skin (5) and the middle skin (3) and the outer honeycomb (2) between the outer skin (1) and the middle skin (3) are equal in thickness; in a transition region, the thickness of an inner layer honeycomb (4) between an inner skin (5) and a middle skin (3) is changed from an electrical design thickness to 0, filler (7) is filled in the cells of the inner layer honeycomb (4), and an outer layer honeycomb (2) between an outer skin (1) and the middle skin (3) is equal in thickness; in the radome connecting area, an inner skin (5) is directly attached to a middle skin (3), and a bearing belt (6) with the same thickness is arranged between the middle skin (3) and an outer skin (1).
2. The layer transition structure of the five-layer structure radome of claim 1, wherein: the filler (7) is a syntactic foam.
3. The layer transition structure of the five-layer structure radome of claim 1, wherein: the inner layer honeycomb (4) is aramid paper honeycomb.
4. The layer transition structure of the five-layer structure radome of claim 1, wherein: the outer layer honeycomb (2) is aramid paper honeycomb.
5. The layer transition structure of the five-layer structure radome of claim 1, wherein: the inner skin (5) is a resin-impregnated fiberglass fabric prepreg.
6. The layer transition structure of the five-layer structure radome of claim 1, wherein: the outer skin (1) is a resin-impregnated fiberglass fabric prepreg.
7. The layer transition structure of the five-layer structure radome of claim 1, wherein: the middle covering (3) is made of a resin-impregnated fiberglass fabric prepreg.
8. The layer transition structure of the five-layer structure radome of claim 1, wherein: the inner, outer and middle skin (3) is molded under the condition of medium temperature or high temperature.
9. The layer transition structure of the five-layer antenna housing according to claim 8, wherein: the medium temperature is 80-130 ℃ and the high temperature is more than 130 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875378.1A CN111969315A (en) | 2020-08-26 | 2020-08-26 | Layering transition structure of five-layer structure antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875378.1A CN111969315A (en) | 2020-08-26 | 2020-08-26 | Layering transition structure of five-layer structure antenna housing |
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| Publication Number | Publication Date |
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| CN111969315A true CN111969315A (en) | 2020-11-20 |
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| CN202010875378.1A Pending CN111969315A (en) | 2020-08-26 | 2020-08-26 | Layering transition structure of five-layer structure antenna housing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810181A (en) * | 2020-12-24 | 2021-05-18 | 中国航空制造技术研究院 | Non-adhesive-film C-shaped honeycomb interlayer radome and preparation device and forming method thereof |
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| EP0833733B1 (en) * | 1995-05-10 | 2001-08-22 | McDONNELL DOUGLAS CORPORATION | Fabrication of large hollow composite structure |
| US20160167333A1 (en) * | 2012-07-10 | 2016-06-16 | Bell Helicopter Textron Inc. | Method of making core-stiffened structure |
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| CN107565215A (en) * | 2016-07-01 | 2018-01-09 | 陕西飞机工业（集团）有限公司 | A kind of airborne antenna cover structure |
| CN108081681A (en) * | 2017-12-15 | 2018-05-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of mixing sandwich structure and its processing method with sloped transition area |
| CN108808239A (en) * | 2018-06-22 | 2018-11-13 | 中国电子科技集团公司第二十九研究所 | A kind of high-performance blister towards high-speed cruising carrier satellite communication system |
| CN109553905A (en) * | 2018-11-24 | 2019-04-02 | 浙江中科恒泰新材料科技有限公司 | A kind of preparation method of the polymethacrylimide foam composite material of enhancing |
| CN110303696A (en) * | 2019-07-09 | 2019-10-08 | 株洲时代新材料科技股份有限公司 | Z-PIN enhances honeycomb sandwich board and its moulding process |
| CN110429381A (en) * | 2019-07-26 | 2019-11-08 | 中国航空工业集团公司济南特种结构研究所 | A kind of sandwich antenna house |
-
2020
- 2020-08-26 CN CN202010875378.1A patent/CN111969315A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833733B1 (en) * | 1995-05-10 | 2001-08-22 | McDONNELL DOUGLAS CORPORATION | Fabrication of large hollow composite structure |
| US20160167333A1 (en) * | 2012-07-10 | 2016-06-16 | Bell Helicopter Textron Inc. | Method of making core-stiffened structure |
| US20160271900A1 (en) * | 2015-03-19 | 2016-09-22 | Rohr, Inc. | Ply drops in composite sandwich panels |
| CN107565215A (en) * | 2016-07-01 | 2018-01-09 | 陕西飞机工业（集团）有限公司 | A kind of airborne antenna cover structure |
| CN107221749A (en) * | 2017-03-31 | 2017-09-29 | 中国航空工业集团公司济南特种结构研究所 | Grapefruit satellite Stealthy reflector Antenna cover based on frequency-selective surfaces and preparation method thereof |
| CN108081681A (en) * | 2017-12-15 | 2018-05-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of mixing sandwich structure and its processing method with sloped transition area |
| CN108808239A (en) * | 2018-06-22 | 2018-11-13 | 中国电子科技集团公司第二十九研究所 | A kind of high-performance blister towards high-speed cruising carrier satellite communication system |
| CN109553905A (en) * | 2018-11-24 | 2019-04-02 | 浙江中科恒泰新材料科技有限公司 | A kind of preparation method of the polymethacrylimide foam composite material of enhancing |
| CN110303696A (en) * | 2019-07-09 | 2019-10-08 | 株洲时代新材料科技股份有限公司 | Z-PIN enhances honeycomb sandwich board and its moulding process |
| CN110429381A (en) * | 2019-07-26 | 2019-11-08 | 中国航空工业集团公司济南特种结构研究所 | A kind of sandwich antenna house |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810181A (en) * | 2020-12-24 | 2021-05-18 | 中国航空制造技术研究院 | Non-adhesive-film C-shaped honeycomb interlayer radome and preparation device and forming method thereof |
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Application publication date: 20201120 |