CN111969316A - Variable-thickness front-part radome with unidirectional tape structure - Google Patents
Variable-thickness front-part radome with unidirectional tape structure Download PDFInfo
- Publication number
- CN111969316A CN111969316A CN202010875907.8A CN202010875907A CN111969316A CN 111969316 A CN111969316 A CN 111969316A CN 202010875907 A CN202010875907 A CN 202010875907A CN 111969316 A CN111969316 A CN 111969316A
- Authority
- CN
- China
- Prior art keywords
- unidirectional
- radome
- variable
- thickness
- fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/281—Nose antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a variable-thickness front-flap radome with a unidirectional tape structure, which comprises an outer unidirectional tape, a variable-thickness area fabric, an inner unidirectional tape, an outer covering I and an inner covering I, wherein the inner unidirectional tape is positioned inside the outer unidirectional tape, a cavity is formed between the outer unidirectional tape and the inner unidirectional tape, the variable-thickness area fabric is filled in the cavity, the outer covering I is arranged outside the outer unidirectional tape and conforms to an outer molded surface of a radome, the inner covering I is arranged inside the inner unidirectional tape and conforms to an inner molded surface of the radome, the variable-thickness area fabric is thinned from the end of the front-flap radome close to a wing root to the wing tip, and the variable-thickness area fabric is thinned from the root of the front-flap radome to the tip of the front-flap radome, so that the problem that the design thickness layering of the front-flap radome with violent change of the outline curvature can not be realized is solved, simple structure, good operability, and direct design and production guidance.
Description
Technical Field
The invention relates to the technical field of radar antenna design, in particular to a variable-thickness front opening radome with a unidirectional tape structure.
Background
The performance index requirements of airplanes are more and more severe, antennas are required to be installed at the flap position of the leading edge of the airplane to achieve the wave-transmitting function, and therefore a front opening antenna cover with the wave-transmitting function is required to be installed. Meanwhile, the leading edge part is loaded severely, and the load-bearing capacity in a specific direction is required, so that the composite material laying design is required. In some cases, the aerodynamic profile of the leading edge flap has been designed so that, depending on the thickness checked for strength, the leading edge tip cannot be laid to an equal thickness. Based on the situation, a front opening radome with a variable thickness in a unidirectional band needs to be designed.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a variable-thickness front opening radome with a unidirectional tape structure, which can meet the requirement of thickness change under the condition of unidirectional tape layering.
The technical scheme of the invention is as follows:
the utility model provides a thickness-variable front opening radome with one-way belt structure, includes outer unilateralism area, the regional fabric of thickness-variable, inlayer unilateralism area, outer covering one, inner covering one, the inlayer unilateralism area be located outer unilateralism in-band portion, outer unilateralism area and inlayer unilateralism area between form a cavity, the regional fabric of thickness-variable fill in the cavity in, outer covering one set up in outer unilateralism area outside, outer covering one conforms with the pneumatic outer profile of radome, inner covering one set up at inlayer unilateralism in-band inboard, inner covering one conforms with the pneumatic inner profile of radome, the regional fabric of thickness-variable be close to wing root end from the thickness attenuation to wing tip from the preceding front opening radome, the regional fabric of thickness be from preceding front opening radome root to preceding front opening radome opening tip by thin thickening.
Further, the novel fabric further comprises a second outer skin, and the second outer skin is arranged on the outer side of the fabric in the variable thickness area.
Further, the novel fabric further comprises a second inner skin, and the second inner skin is arranged on the inner side of the fabric in the variable thickness area.
Furthermore, the outer unidirectional belt and the inner unidirectional belt are belt-shaped prepregs formed by impregnating unidirectional fabrics with resin.
Further, the outer unidirectional tape is composed of a plurality of layers of unidirectional fabrics, wherein the plurality of layers of unidirectional fabrics comprise unidirectional fabrics in the 0-degree direction, unidirectional fabrics in the +/-45-degree direction and unidirectional fabrics in the 90-degree direction.
Further, the 0-degree direction is the direction of the crest line of the front-opening radome.
Further, the 90-degree direction is perpendicular to the front opening radome ridgeline.
Furthermore, the variable thickness area fabric is a resin-impregnated ethylene glass fiber fabric prepreg.
The invention has the beneficial effects that:
the variable-thickness front opening radome with the unidirectional tape structure solves the problem that a design thickness layering of the front opening radome with violent change of the shape curvature cannot be realized, has a simple structure and good operability, and can directly guide design and production.
Drawings
FIG. 1 is a cross-sectional view of a front opening radome structure of the present invention;
FIG. 2 is a three-dimensional view of a front-flap radome structure of the present invention;
FIG. 3 is a schematic view of the unidirectional fabric laying angle of the present invention;
wherein: 1. an outer unidirectional tape; 2. a variable thickness area fabric; 3. an inner unidirectional tape; 4. a first outer skin; 5. a first inner skin; 6. a second outer skin; 7. and a second inner skin.
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 variable thickness front fly radome with a unidirectional tape structure comprises an outer unidirectional tape 1, a variable thickness area fabric 2, an inner unidirectional tape 3, an outer skin I4, an inner skin I5, an outer skin II 6 and an inner skin II 7, wherein the outer skin I4 is positioned on the outermost layer of the variable thickness front fly radome structure, the inner skin I5 is positioned on the innermost layer of the variable thickness front fly radome structure, the outer unidirectional tape 1 and the inner unidirectional tape 3 are positioned between the outer skin I4 and the inner skin I5, a variable thickness cavity is formed between the outer unidirectional tape 1 and the inner unidirectional tape 3, so that the front edge tip part cannot be subjected to equal thickness layering, therefore, the variable thickness area fabric 2 is filled in the cavity, the shape of the variable thickness area fabric 2 is the same as that of the cavity, and the outer profile of the variable thickness area fabric 2 is matched with the inner profile of the cavity, so that variable thickness layering can be carried out in the cavity area;
wherein, outer covering one 4 sets up in outer unilateralism area 1 outside, and outer covering one 4 external surfaces conforms to with the pneumatic outer profile of antenna house, and the internal surface of outer covering one 4 conforms to with outer unilateralism area 1 external surface, and outer covering one 4 passes through the adhesive and bonds with outer unilateralism area 1, for example adopts the epoxy adhesive, when using the epoxy adhesive to bond outer covering one 4 internal profile and outer unilateralism area 1 external surface bonding, the collocation curing agent uses together, and it can solidify rapidly to be the epoxy adhesive, saves process time.
Further, interior covering one 5 set up 3 inboards at inlayer one-way area, interior covering one 5 accords with the pneumatic interior profile of antenna house, the surface of interior covering one 5 accords with 3 internal surfaces of inlayer one-way area, interior covering one 5 bonds with inlayer one-way area 3 through the adhesive, for example adopt the epoxy adhesive, when using the epoxy adhesive to bond interior covering one 5 outer profiles and 3 internal surfaces of inlayer one-way area, the collocation curing agent uses together, is that the epoxy adhesive can solidify rapidly, saves process time.
In the invention, as shown in fig. 3, the thickness of the fabric 2 in the variable thickness area is reduced from the end of the front-flap radome close to the wing root to the wing tip, and the thickness of the fabric 2 in the variable thickness area is reduced from the root of the front-flap radome to the tip of the front-flap radome;
as shown in fig. 3, the outer unidirectional tape 1 and the inner unidirectional tape 3 are tape-shaped prepregs formed by impregnating unidirectional fabrics with resin, the outer unidirectional tape 1 is formed by laying a plurality of unidirectional fabrics, and the plurality of unidirectional fabrics include unidirectional fabrics in the 0 ° direction, unidirectional fabrics in the ± 45 ° direction, and unidirectional fabrics in the 90 ° direction. Wherein the 0 degree direction is the front opening antenna housing ridge line direction, the 90 degree direction is the direction vertical to the front opening antenna housing ridge line, the +45 degree direction is the direction 45 degrees with the front opening antenna housing ridge line, and the-45 degree direction is the direction minus 45 degrees with the front opening antenna housing ridge line.
The outer skin II 6 is arranged on the outer side of the variable-thickness area fabric 2, the inner skin II 7 is arranged on the inner side of the variable-thickness area fabric 2, the variable-thickness area fabric 2 is separated from the outer layer unidirectional belt 1 and the inner layer unidirectional belt 3 through the outer skin II 6 and the inner skin II 7, and meanwhile a certain supporting effect is achieved.
In addition, the variable-thickness area fabric 2, the first outer covering 4, the first inner covering 5, the second outer covering 6 and the second inner covering 7 are all made of the ethylene glass fiber fabric prepreg soaked in resin, 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 shape stability, high elastic modulus, high dynamic strength and low thermal conductivity.
The first outer skin 4, the first inner skin 5, the second outer skin 6 and the second inner skin 7 are all formed by paving and pasting a plurality of prepreg of the glass fiber fabric, 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 curing is carried out 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 curing of the four skins is finished, the edges of the protective structure layer are polished by using sand paper to be smooth.
According to the invention, a layer digital model meeting the load requirement is designed according to the bearing condition of the front edge radome (the sum of the inner unidirectional tape 3 and the outer unidirectional tape 1 is the total layer number), and the front opening radome cannot be laminated in equal thickness due to the limitation of the aerodynamic shape of the front opening radome, so that the outer skin II 6 needs to be laminated at first; and constructing a first inner skin 5 according to the total number of layers, then laying a second inner skin 7 by the first inner skin 5, and filling the variable thickness area fabric 2 between the second inner skin 7 and the second outer skin 6.
The number of the outer unidirectional tapes 1 and the inner unidirectional tapes 3 is designed according to the appearance characteristics of the first outer skin 4 and the number of the total layers, so that good manufacturability is achieved.
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 (8)
1. The utility model provides a thickness-variable front opening radome with unidirectional tape structure which characterized in that: comprises an outer unidirectional belt (1), a variable thickness area fabric (2), an inner unidirectional belt (3), an outer covering I (4) and an inner covering I (5), the inner unidirectional belt (3) is positioned in the outer unidirectional belt (1), a cavity is formed between the outer unidirectional belt (1) and the inner unidirectional belt (3), the variable-thickness area fabric (2) is filled in the cavity, the outer skin I (4) is arranged outside the outer unidirectional belt (1), the outer skin I (4) conforms to the pneumatic outer profile of the radome, the inner skin I (5) is arranged on the inner side of the inner layer one-way belt (3), the inner skin I (5) conforms to the pneumatic inner profile of the antenna housing, the fabric (2) in the variable thickness area is thinned from the thick part close to the wing root end of the front flap radome to the wing tip, the variable-thickness area fabric (2) is variable in thickness from the root of the front-flap radome to the tip of the front-flap radome.
2. The variable thickness forepart radome of a unidirectional tape structure as claimed in claim 1, wherein: the fabric further comprises a second outer skin (6), and the second outer skin (6) is arranged on the outer side of the variable-thickness area fabric (2).
3. The variable thickness forepart radome of a unidirectional tape structure as claimed in claim 1, wherein: the novel fabric is characterized by further comprising a second inner skin (7), wherein the second inner skin (7) is arranged on the inner side of the variable-thickness area fabric (2).
4. The variable thickness forepart radome of a unidirectional tape structure as claimed in claim 1, wherein: the outer-layer unidirectional belt (1) and the inner-layer unidirectional belt (3) are belt-shaped prepregs formed by impregnating unidirectional fabrics with resin.
5. The variable thickness forepart radome of a unidirectional tape structure of claim 4, wherein: the outer unidirectional belt (1) is formed by laying a plurality of layers of unidirectional fabrics, and the plurality of layers of unidirectional fabrics comprise unidirectional fabrics in the 0-degree direction, unidirectional fabrics in the +/-45-degree direction and unidirectional fabrics in the 90-degree direction.
6. The variable thickness forepart radome of a unidirectional tape structure of claim 5, wherein: the 0-degree direction is the direction of the crest line of the front opening antenna housing.
7. The variable thickness forepart radome of a unidirectional tape structure of claim 5, wherein: the 90-degree direction is perpendicular to the ridge line of the front opening antenna housing.
8. The variable thickness forepart radome of a unidirectional tape structure as claimed in claim 1, wherein: the variable thickness area fabric (2) is a resin-impregnated ethylene glass fiber fabric prepreg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875907.8A CN111969316A (en) | 2020-08-26 | 2020-08-26 | Variable-thickness front-part radome with unidirectional tape structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875907.8A CN111969316A (en) | 2020-08-26 | 2020-08-26 | Variable-thickness front-part radome with unidirectional tape structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969316A true CN111969316A (en) | 2020-11-20 |
Family
ID=73391066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010875907.8A Pending CN111969316A (en) | 2020-08-26 | 2020-08-26 | Variable-thickness front-part radome with unidirectional tape structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969316A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074435A (en) * | 2021-03-26 | 2022-02-22 | 亨弗劳恩(江苏)复合材料研发有限公司 | Preparation method of thermoplastic composite material sheet |
| CN116883622A (en) * | 2023-07-17 | 2023-10-13 | 天津爱思达航天科技股份有限公司 | Diffusion section variable-thickness layering model implementation method and device, equipment and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103828124A (en) * | 2011-09-12 | 2014-05-28 | 帝斯曼知识产权资产管理有限公司 | Composite radome wall |
| CN104513456A (en) * | 2013-09-27 | 2015-04-15 | 深圳光启创新技术有限公司 | Prepreg, forming method thereof and wave-transmitting material |
| CN107244082A (en) * | 2016-10-26 | 2017-10-13 | 上海无线电设备研究所 | A kind of forming method of thin-walled Varying-thickness composite antenna housing |
| CN108521016A (en) * | 2018-04-13 | 2018-09-11 | 哈尔滨哈玻拓普复合材料有限公司 | A kind of D shipborne radar cover and its manufacturing method |
| JP2018152635A (en) * | 2017-03-09 | 2018-09-27 | 三菱電機株式会社 | Radome for flying body and design method of the same |
| CN109638445A (en) * | 2018-10-26 | 2019-04-16 | 上海无线电设备研究所 | A kind of high temperature resistant foam A interlayer composite material antenna house and preparation method thereof |
| US20190176957A1 (en) * | 2017-12-12 | 2019-06-13 | The Boeing Company | Core structures for composite panels of an aircraft, composite panels and aircraft including the core structures, and methods of manufacturing the composite panels |
-
2020
- 2020-08-26 CN CN202010875907.8A patent/CN111969316A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103828124A (en) * | 2011-09-12 | 2014-05-28 | 帝斯曼知识产权资产管理有限公司 | Composite radome wall |
| CN104513456A (en) * | 2013-09-27 | 2015-04-15 | 深圳光启创新技术有限公司 | Prepreg, forming method thereof and wave-transmitting material |
| CN107244082A (en) * | 2016-10-26 | 2017-10-13 | 上海无线电设备研究所 | A kind of forming method of thin-walled Varying-thickness composite antenna housing |
| JP2018152635A (en) * | 2017-03-09 | 2018-09-27 | 三菱電機株式会社 | Radome for flying body and design method of the same |
| US20190176957A1 (en) * | 2017-12-12 | 2019-06-13 | The Boeing Company | Core structures for composite panels of an aircraft, composite panels and aircraft including the core structures, and methods of manufacturing the composite panels |
| CN108521016A (en) * | 2018-04-13 | 2018-09-11 | 哈尔滨哈玻拓普复合材料有限公司 | A kind of D shipborne radar cover and its manufacturing method |
| CN109638445A (en) * | 2018-10-26 | 2019-04-16 | 上海无线电设备研究所 | A kind of high temperature resistant foam A interlayer composite material antenna house and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074435A (en) * | 2021-03-26 | 2022-02-22 | 亨弗劳恩(江苏)复合材料研发有限公司 | Preparation method of thermoplastic composite material sheet |
| CN116883622A (en) * | 2023-07-17 | 2023-10-13 | 天津爱思达航天科技股份有限公司 | Diffusion section variable-thickness layering model implementation method and device, equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105904740B (en) | A kind of integral manufacturing method of composite material light continuous fiber grid | |
| US5849234A (en) | Multilayer radome structure and its fabrication | |
| CN1915650B (en) | Vacuum forming technique for sandwich structure piece of composite material of fiberglass-reinforced plastics | |
| CN207947378U (en) | A kind of D shipborne radar cover | |
| CN111267413A (en) | Composite material intelligent skin and manufacturing method thereof | |
| CN111969316A (en) | Variable-thickness front-part radome with unidirectional tape structure | |
| CN106739043B (en) | PMI foam sandwich aircraft radome and manufacturing method thereof | |
| US20040140049A1 (en) | Method of manufacturing a hollow section, grid stiffened panel | |
| US20230364875A1 (en) | Modular wind turbine blade and manufacturing method thereof | |
| CN105416567A (en) | Skin, unmanned aerial vehicle wing, manufacturing method of unmanned aerial vehicle wing, empennage and manufacturing method of empennage | |
| US9506349B2 (en) | Wind turbine component comprising radar-absorbing material | |
| CN113178694A (en) | Self-adhesive prepreg-containing broadband radome and preparation method thereof | |
| CN110978556B (en) | Composite material airfoil sandwich structure and forming method thereof | |
| CN112407236A (en) | Honeycomb sandwich graphene stealth front edge and processing method thereof | |
| CN106340722A (en) | Antenna shell group and manufacturing method thereof | |
| CN106426987B (en) | A kind of monolithic molding airfoil structure manufacturing process | |
| CN109228375B (en) | Skin forming method | |
| CN112829342B (en) | Forming method of aircraft special-shaped cabin heat-proof layer and heat-proof layer | |
| CN111969317A (en) | Low-stress high-rigidity radome structure | |
| CN109397719A (en) | For drawing-pressing the carbon fibre composite of carrying to wind connector and preparation method thereof | |
| CN109927318A (en) | A kind of wire arrangements system of wind electricity blade, wind electricity blade and preparation method thereof | |
| CN109109400B (en) | Composite material and aircraft | |
| CN112265651B (en) | Solar airplane ultra-light leading edge structure and preparation method thereof | |
| CN113764883A (en) | Crown-shaped composite material honeycomb interlayer antenna housing and forming tool and method thereof | |
| CN112701466A (en) | Sandwich structure airborne radome with water leakage holes and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201120 |
|
| RJ01 | Rejection of invention patent application after publication |