CN109490837A - A kind of Anti-cracking extended pattern foamed sandwich structure radome - Google Patents
A kind of Anti-cracking extended pattern foamed sandwich structure radome Download PDFInfo
- Publication number
- CN109490837A CN109490837A CN201810771115.9A CN201810771115A CN109490837A CN 109490837 A CN109490837 A CN 109490837A CN 201810771115 A CN201810771115 A CN 201810771115A CN 109490837 A CN109490837 A CN 109490837A
- Authority
- CN
- China
- Prior art keywords
- suture
- sandwich structure
- kevlar fiber
- foam layer
- extended pattern
- 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
- 238000005336 cracking Methods 0.000 title claims abstract description 13
- 239000006260 foam Substances 0.000 claims abstract description 39
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000004761 kevlar Substances 0.000 claims abstract description 21
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 23
- 230000035939 shock Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of Anti-cracking extended pattern foamed sandwich structure radome, including upper covering, lower covering and several foam layers, suture connection is carried out using Kevlar fiber suture between every two pieces of adjacent foam layers, by the way that several foam layers are arranged between upper covering and lower covering, suture connection is carried out using Kevlar fiber suture between every two pieces of adjacent foam layers, it can effectively prevent the large area extension that crackle is hit in foam layer after radome is hit, considerably increase the bearing capacity and service life of foam layer, also the maintenance after facilitating damage, furthermore, by the way that foam layer is divided into the smaller piecemeal of several areas, it can effectively solve the problems, such as that the thermal finalization of larger area foam layer is poor.
Description
Technical field
The present invention relates to radome technical field, in particular to a kind of Anti-cracking extended pattern foamed sandwich structure radar
Antenna house.
Background technique
Foamed sandwich structure due to specific stiffness and specific strength height, light weight, have good stability, the advantages such as endurance are in aviation
Space industry has been widely used, in addition, the isotropic characteristics of foam layer make it have good wave transparent performance, because
This, foamed sandwich structure acts not only as structural member use, can also be used as functor use, currently, foamed sandwich structure
It is widely used in radome field.
The shock resistance of foamed sandwich structure is weaker, is impacting by hail, after the accidental shocks such as bird is hit, sandstone impacts
Easily to damage, the intensity and modulus of especially foam layer is lower than covering intensity, and permissible is small, there is certain brittleness,
By damage is more prone to produce after impact loading, if damage continues to carry after generating, it may appear that crack propagation influences to tie
The bearing capacity and use reliability of structure.
It is, therefore, desirable to provide a kind of Anti-cracking extended pattern foamed sandwich structure radome, at the time of molding by foam point
Several pieces are cut into, uses the suture of special material to carry out suture connection between every piece of foam, can occur in radome
It effectively prevents the large area of crackle from extending after shock, while facilitating the maintenance after damage.
Summary of the invention
Present invention solves the technical problem that: a kind of Anti-cracking extended pattern foamed sandwich structure radome is provided, to
When solving traditional radome and being impacted in use, foam layer crackle is easy extension and larger area bubble
The problem of the thermal finalization effect difference of foam interlayer.
Technical solution of the present invention:
A kind of Anti-cracking extended pattern foamed sandwich structure radome, including upper covering and lower covering, further include several
Foam layer carries out suture connection using Kevlar fiber suture between every two pieces of adjacent foam layers.
The suture spacing of every two adjacent Kevlar fiber sutures is 10mm.
The Kevlar fiber length of suture sutured between every two pieces of adjacent foam layers is 20mm.
The Kevlar fiber suture is the dry state Kevlar fiber suture of 100 Tekes.
Beneficial effects of the present invention: a kind of Anti-cracking extended pattern foamed sandwich structure radome, including upper illiteracy are provided
Skin and lower covering, by being arranged several foam layers between upper covering and lower covering, between every two pieces of adjacent foam layers
Suture connection is carried out using Kevlar fiber suture, can effectively prevent in foam layer after radome is hit
The large area extension for hitting crackle, considerably increases the bearing capacity and service life of foam layer, the dimension after also facilitating damage
It repairs, furthermore, by the way that foam layer is divided into the smaller piecemeal of several areas, it can effectively solve larger area foam layer
Thermal finalization difference problem.
Detailed description of the invention
Fig. 1 is surface structure schematic diagram of the invention；
It is identified in figure: 1, upper covering, 2, lower covering, 3, foam layer, 4, Kevlar fiber suture.
Specific embodiment
The present invention is described further with reference to the accompanying drawing, as shown in Figure 1, a kind of Anti-cracking extended pattern foam layer
Structure radome, including upper covering 1 and lower covering 2 further include several foam layers 3, every two pieces adjacent foam layers 3
Between suture connection carried out using Kevlar fiber suture 4, before suture, need at 3 suture location of foam layer using boring
The pin hole that prefabricated diameter is about 2.2mm.
The suture spacing of every two adjacent Kevlar fiber sutures 4 is 10mm, between every two pieces adjacent foam layers 3
4 length of Kevlar fiber suture of suture is 20mm, not only can effectively transmit load in foam layer 3, but also can be to avoid
Pin hole spacing closely causes very much the damage of foam layer 3.
The Kevlar fiber suture 4 is the dry state Kevlar fiber suture 4 of 100 Tekes, due to 100 Tekes
The intensity with higher of dry state Kevlar fiber suture 4, thus can effective Transfer of Shear, meet the bearing requirements of structure,
The dry state Kevlar fiber suture 4 of 100 Tekes has good wave transparent performance, therefore the splicing between foam layer 3 simultaneously
It sutures smaller on the influence of the electrical property of radome.
The present invention can effectively prevent the large area that crackle is hit in foam layer 3 after radome is hit
Extension, considerably increases the bearing capacity and service life of foam layer 3, the maintenance after also facilitating damage, while by that will steep
Foam interlayer is divided into the smaller piecemeal of several areas, can also effectively solve the problems, such as that the thermal finalization of larger area foam is poor.
Claims (4)
1. a kind of Anti-cracking extended pattern foamed sandwich structure radome, including upper covering (1) and lower covering (2), feature
Be: further including several foam layers (3), between every two pieces of adjacent foam layers (3) using Kevlar fiber suture (4) into
Row suture connection.
2. a kind of Anti-cracking extended pattern foamed sandwich structure radome according to claim 1, it is characterised in that: every
The suture spacing of two adjacent Kevlar fiber sutures (4) is 10mm.
3. a kind of Anti-cracking extended pattern foamed sandwich structure radome according to claim 1, it is characterised in that: every
Kevlar fiber suture (4) length sutured between two pieces of adjacent foam layers (3) is 20mm.
4. a kind of Anti-cracking extended pattern foamed sandwich structure radome according to claim 1, it is characterised in that: institute
The Kevlar fiber suture (4) stated is the dry state Kevlar fiber suture (4) of 100 Tekes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771115.9A CN109490837A (en) | 2018-07-13 | 2018-07-13 | A kind of Anti-cracking extended pattern foamed sandwich structure radome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771115.9A CN109490837A (en) | 2018-07-13 | 2018-07-13 | A kind of Anti-cracking extended pattern foamed sandwich structure radome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109490837A true CN109490837A (en) | 2019-03-19 |
Family
ID=65689248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810771115.9A Pending CN109490837A (en) | 2018-07-13 | 2018-07-13 | A kind of Anti-cracking extended pattern foamed sandwich structure radome |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109490837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444882A (en) * | 2019-07-22 | 2019-11-12 | 中国航空工业集团公司济南特种结构研究所 | A kind of conformal antenna cover structure of honeycomb interlayer enhancing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06283918A (en) * | 1993-03-26 | 1994-10-07 | Sumitomo Electric Ind Ltd | Multi-frequency band radome |
| CN101462382A (en) * | 2009-01-16 | 2009-06-24 | 武汉理工大学 | Sandwich structure composite material with elastic core material and preparation method thereof |
| CN108054508A (en) * | 2017-11-29 | 2018-05-18 | 中国航空工业集团公司济南特种结构研究所 | A kind of reinforced PMI foam layers radome |
-
2018
- 2018-07-13 CN CN201810771115.9A patent/CN109490837A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06283918A (en) * | 1993-03-26 | 1994-10-07 | Sumitomo Electric Ind Ltd | Multi-frequency band radome |
| CN101462382A (en) * | 2009-01-16 | 2009-06-24 | 武汉理工大学 | Sandwich structure composite material with elastic core material and preparation method thereof |
| CN108054508A (en) * | 2017-11-29 | 2018-05-18 | 中国航空工业集团公司济南特种结构研究所 | A kind of reinforced PMI foam layers radome |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444882A (en) * | 2019-07-22 | 2019-11-12 | 中国航空工业集团公司济南特种结构研究所 | A kind of conformal antenna cover structure of honeycomb interlayer enhancing |
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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: 20190319 |
|
| RJ01 | Rejection of invention patent application after publication |