JPH0521069B2 - - Google Patents
Info
- Publication number
- JPH0521069B2 JPH0521069B2 JP8560286A JP8560286A JPH0521069B2 JP H0521069 B2 JPH0521069 B2 JP H0521069B2 JP 8560286 A JP8560286 A JP 8560286A JP 8560286 A JP8560286 A JP 8560286A JP H0521069 B2 JPH0521069 B2 JP H0521069B2
- Authority
- JP
- Japan
- Prior art keywords
- frp
- ceramic
- radome
- mold
- mist
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 30
- 239000003595 mist Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000006082 mold release agent Substances 0.000 claims description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 7
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000012779 reinforcing material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000011247 coating layer Substances 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Details Of Aerials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は繊維強化プラスチツク（以下FRP
と記す）製サンドイツチ構造体の外表面にセラミ
ツク層を設けたレドームの製造方法に関するもの
である。[Detailed description of the invention] [Industrial field of application] This invention relates to fiber reinforced plastics (hereinafter referred to as FRP).
The present invention relates to a method for manufacturing a radome in which a ceramic layer is provided on the outer surface of a sandwich structure made by (denoted as ).
第５図〜第７図に従来例によるFRP製レドー
ムを示し、第５図は航空機にレドームが装着され
た状態を示す斜視図、第６図はこのレドームの外
観図、第７図は第６図のＡ部拡大図である。
Figures 5 to 7 show conventional FRP radomes, Figure 5 is a perspective view of the radome installed on an aircraft, Figure 6 is an external view of the radome, and Figure 7 is the radome. It is an enlarged view of part A in the figure.
図において、１は航空機先端のレーダーの前面
に置かれたレドームで、平滑面、耐候性、高い電
波透過率、高強度、軽量化等の要求を満たすため
に金属以外の材料を用いたFRP製サンドイツチ
構造体が採用されている。２はこのレドーム１の
基材となるサンドイツチ構造体で所定の形状に成
形されている。３はこのサンドイツチ構造体２の
中心をなすハニカムコアで、織物状補強材、例え
ばアラミツド繊維からなる補強材に樹脂が含浸し
て成形されている。４はサンドイツチ構造体２を
構成し上記ハニカムコア３の両端に固着された
FRP板で、ガラス繊維等の織物状補強材に樹脂
を含浸硬化させたものである。５は所定の形状に
成形したサンドイツチ構造体２の外表面に塗布さ
れたコーテイング層で、例えばウレタン等の塗料
である。 In the figure, 1 is the radome placed in front of the radar at the tip of the aircraft.It is made of FRP using a material other than metal to meet the requirements of a smooth surface, weather resistance, high radio wave transmittance, high strength, and light weight. A sanderch structure is used. Reference numeral 2 denotes a sandwich structure which serves as the base material of this radome 1 and is molded into a predetermined shape. 3 is a honeycomb core forming the center of this sanderch structure 2, which is formed by impregnating a woven reinforcing material, for example, an aramid fiber with resin. 4 constitutes a sandwich structure 2 and is fixed to both ends of the honeycomb core 3.
This is an FRP board made by impregnating and hardening a woven reinforcement material such as glass fiber with resin. A coating layer 5 is applied to the outer surface of the sandwich structure 2 formed into a predetermined shape, and is, for example, a paint such as urethane.
従来のFRP製レドームは以上の様に構成され、
次の様に製造される。まず成形型（図示していな
い）に、所定の形状で成形された半硬化状態の
FRP板４とハニカムコア３およびFRP板４を順
に乗せ加圧加熱成形することによりサンドイツチ
構造体２を成形する。成形完了後、成形型より離
型し、外表面にウレタン等の塗料を塗布しコーテ
イング層５を形成する。 Conventional FRP radomes are constructed as described above.
It is manufactured as follows. First, a semi-cured material that is molded into a predetermined shape is placed in a mold (not shown).
The FRP plate 4, the honeycomb core 3, and the FRP plate 4 are sequentially placed and pressed and heated to form the sandwich structure 2. After the molding is completed, the mold is released, and a coating layer 5 such as urethane is applied to the outer surface to form a coating layer 5.
従来のFRP製レドームは以上の様に構成され
製造されているが、このレドームは航空機の先端
に用いられ、航空機の離着陸の際にはこのレドー
ムに砂塵が付着しやすくまた雨中を飛行する際に
は水滴が激しくぶつかる状況で使用されているた
めレドーム表面のコーテイング層５が損耗すると
いう問題点があつた。またコーテイング層はウレ
タン等の高分子材料を用いた塗料のため、上記の
悪化した使用環境条件では塗装面が長時間の使用
に耐えることができず、航空機の運行を止め再塗
装しなくてはならないため不経済であり、また費
用もかかるという問題点があつた。
Conventional FRP radomes are constructed and manufactured as described above, but this radome is used at the tip of an aircraft, and dust tends to adhere to it during takeoff and landing, and when flying in the rain. Since the radome is used in a situation where water droplets collide violently, there was a problem in that the coating layer 5 on the radome surface was worn out. Furthermore, since the coating layer is made of a polymeric material such as urethane, the painted surface cannot withstand long-term use under the above-mentioned deteriorated operating conditions, and the aircraft must be stopped and repainted. There were problems in that it was uneconomical because it did not work, and it was also expensive.
また、上記サンドイツチ構造体２を成形後その
外表面に耐候性が良く高強度のセラミツクを塗布
しても、硬化したFRP板４の上には固着しにく
いという問題点があつた。 Further, even if a weather-resistant and high-strength ceramic is coated on the outer surface of the sanderch structure 2 after it is formed, there is a problem in that it is difficult to adhere to the hardened FRP board 4.
この発明は上記の様な問題点を解消するために
なされたもので、耐候性が良く、基材となる
FRP板との密着性も良く、安価なFRP製レドー
ムの製造方法を得ることを目的とする。 This invention was made to solve the above problems, and it has good weather resistance and can be used as a base material.
The purpose is to obtain a method for manufacturing an inexpensive FRP radome that has good adhesion to an FRP board.
この発明によるFRP製レドームの製造方法は
成形型面に離型剤を塗布しその上に溶融したセラ
ミツクミストを噴射した後、織物状補強材の薄板
からなるハニカムコアの両側にFRP板を配置し、
硬化したセラミツクミスト層に一体に重ね加熱加
圧成形後成形型から脱型し冷却後一体に硬化させ
たセラミツクコーテイングFRP製レドームの製
造方法である。
The method for producing an FRP radome according to this invention involves applying a mold release agent to the surface of the mold, spraying molten ceramic mist onto it, and then placing FRP plates on both sides of a honeycomb core made of thin plates of woven reinforcing material. ,
This is a method for manufacturing a ceramic coated FRP radome, which is integrally layered on a hardened ceramic mist layer, heated and pressure molded, removed from the mold, cooled, and then integrally hardened.
この発明におけるFRP製レドームの製造方法
は金型に離型剤を塗布後溶融セラミツクミストを
噴射し冷却後、その上に半硬化状態のFRP板、
ハニカムコア、および半硬化状態のFRP板を順
に重ね加熱加圧硬化することにより、成型後脱型
するとFRP板とセラミツクが固着し、平滑で高
強度な外面を持つFRP製レドームとなる。
The method for manufacturing an FRP radome in this invention is to apply a mold release agent to a mold, spray molten ceramic mist, cool it, and then place a semi-hardened FRP plate on top of the mold.
By sequentially stacking a honeycomb core and a semi-hardened FRP plate and curing them under heat and pressure, when the mold is removed after molding, the FRP plate and ceramic stick together, creating an FRP radome with a smooth, high-strength outer surface.
第１図〜第４図にこの発明の一実施例によるセ
ラミツクコーテイングFRP製レドームの製造方
法を示し、第１図はこの発明の一実施例によるセ
ラミツクコーテイングレドームの外形図、第２図
は第１図のＢ部拡大図である。第３図、第４図は
製造途中状態を示す図である。図において、１〜
４は従来例において説明したものと同一である。
６は溶融したセラミツクミストで、低誘電率で電
波透過率の良い材料、例えばシリカ（SiO2）が
用いられ、FRP板４に付着される。
1 to 4 show a method of manufacturing a ceramic coated FRP radome according to an embodiment of the present invention, FIG. 1 is an external view of the ceramic coated radome according to an embodiment of the present invention, and FIG. It is an enlarged view of part B in the figure. FIG. 3 and FIG. 4 are diagrams showing a state in the middle of manufacturing. In the figure, 1 to
4 is the same as that explained in the conventional example.
A molten ceramic mist 6 is made of a material with a low dielectric constant and good radio wave transmittance, such as silica (SiO 2 ), and is adhered to the FRP board 4 .
また第３図、第４図において７は成形金型、８
は溶射ガンで、セラミツク粉体を高圧ガスととも
に送り、高圧ガスが燃焼し内部で溶融したセラミ
ツクミスト６を離型剤９を塗布した成形金型７上
に塗布する。 Also, in Figures 3 and 4, 7 is a molding die, 8
A thermal spray gun is used to send ceramic powder together with high-pressure gas, and the high-pressure gas burns and melts the ceramic mist 6 inside, which is then applied onto a molding die 7 coated with a mold release agent 9.
この発明の一実施例によるセラミツクコーテイ
ングFRP型レドームは以上の様に構成され、次
の様に製造される。まず成形金型７に離型剤９を
設ける。次にこの離型剤９を設けた成形金型７面
に溶射ガン８内で溶融したセラミツクミスト６を
所定の厚さに塗布し冷やして凝固させる。次に所
定の大きさに成型され半硬化したFRP板４、ハ
ニカムコア３および半硬化したFRP板４を凝固
したセラミツクミスト６層に順に乗せ加熱、加圧
成形する。この時凝固したセラミツクミスト６の
凝固層の金型と反対の面は粗面であるが、成形時
FRP板４に含浸された樹脂が粗面にゆきわたり
セラミツクミスト６の凝固層とFRP板４は強固
に結合される。また固着したセラミツクミスト６
の凝固層の内部組織に貫通する気孔があつても成
形時FRP板４に含浸された樹脂がこの気孔に到
り封孔されて硬化される。成形が完了し成形金型
７より脱型すると外表面にセラミツクが施こされ
たレドームが製造される。 A ceramic coated FRP type radome according to an embodiment of the present invention is constructed as described above and manufactured as follows. First, a mold release agent 9 is provided in the molding die 7. Next, ceramic mist 6 melted in a thermal spray gun 8 is applied to a predetermined thickness on the surface of the molding die 7 provided with the mold release agent 9, and is cooled and solidified. Next, the semi-hardened FRP board 4, honeycomb core 3, and semi-hardened FRP board 4 that have been molded to a predetermined size are sequentially placed on six layers of solidified ceramic mist and heated and pressure-molded. The surface of the solidified layer of the ceramic mist 6 solidified at this time, which is opposite to the mold, is rough, but during molding
The resin impregnated into the FRP board 4 spreads over the rough surface, and the solidified layer of ceramic mist 6 and the FRP board 4 are firmly bonded. Also fixed ceramic mist 6
Even if there are pores penetrating the internal structure of the coagulated layer, the resin impregnated into the FRP board 4 during molding reaches these pores, seals them, and hardens them. When the molding is completed and the mold is removed from the molding die 7, a radome whose outer surface is coated with ceramic is manufactured.
またこの発明の一実施例ではセラミツクミスト
としてシリカ（SiO2）を用いたが電波透過率等
の電気的な性能を若干犠性にしてもよい場合はア
ルミナ（Al2O3）のセラミツクミストを使用して
もよい。また他のセラミツク材料またはそれらと
混合して使用してもよい。 Furthermore, in one embodiment of the present invention, silica (SiO 2 ) was used as the ceramic mist, but if it is acceptable to sacrifice electrical performance such as radio wave transmittance, a ceramic mist of alumina (Al 2 O 3 ) may be used. May be used. It may also be used with other ceramic materials or in combination with them.
以上のようにこの発明によるセラミツクコーテ
イングFRP製レドームは成形金面に離型剤を塗
布しその上に溶融したセラミツクミストを噴射
後、織物状補強材に樹脂を含浸半硬化させた繊維
強化プラスチツク板を、樹脂が含浸された織物状
補強材の薄板からなるハニカムコアの両側に配置
し、凝固し硬化したセラミツクミスト層に一体に
重ね加熱加圧成形し成形型から脱型する製造方法
としたので、繊維強化プラスチツク板と強固に接
合した高強度、高耐候性のセラミツクコーテイン
グ繊維強化プラスチツク製レドームが製造できる
効果がある。
As described above, the ceramic coated FRP radome according to the present invention is made by applying a mold release agent to the surface of the molded metal, spraying molten ceramic mist onto it, and then forming a fiber-reinforced plastic board in which the woven reinforcing material is impregnated with resin and semi-cured. were placed on both sides of a honeycomb core made of thin sheets of woven reinforcing material impregnated with resin, and the manufacturing method involved stacking them on a solidified and hardened ceramic mist layer and molding them under heat and pressure, and removing them from the mold. This has the effect of producing a ceramic-coated fiber-reinforced plastic radome with high strength and high weather resistance that is firmly bonded to a fiber-reinforced plastic board.
第１図はこの発明の一実施例によるセラミツク
コーテイングFRP製レドームを示す外観図、第
２図は第１図のＢ部断面図である。第３図、第４
図はこの発明の一実施例によるセラミツクコーテ
イングFRP製レドームの製造過程を示す断面図
である。第５図は従来のFRP製レドームが装着
された航空機を示す斜視図、第６図は従来の
FRP製レドームを示す外観図、第７図は第６図
のＡ部断面図である。
図において１はレドーム、２はサンドイツチ構
造体、３はハニカムコア、４は繊維強化プラスチ
ツク板、６はセラミツクミスト、７は成形金型、
９は離型剤である。各図中、同一符号は同一また
は相当物を示す。
FIG. 1 is an external view showing a ceramic coated FRP radome according to an embodiment of the present invention, and FIG. 2 is a sectional view of section B in FIG. 1. Figures 3 and 4
The figure is a sectional view showing the manufacturing process of a ceramic coated FRP radome according to an embodiment of the present invention. Figure 5 is a perspective view of an aircraft equipped with a conventional FRP radome, and Figure 6 is a perspective view of an aircraft equipped with a conventional FRP radome.
An external view showing the FRP radome, FIG. 7 is a sectional view of section A in FIG. 6. In the figure, 1 is a radome, 2 is a sandwich structure, 3 is a honeycomb core, 4 is a fiber reinforced plastic board, 6 is a ceramic mist, 7 is a molding die,
9 is a mold release agent. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
たセラミツクミストを噴射した後、織物状補強材
に樹脂を含浸半硬化させた繊維強化プラスチツク
板を樹脂が含浸された織物状補強材の薄板からな
るハニカムコアの両側に配置し、成形型面で硬化
したセラミツクミスト層に一体に重ね加熱加圧成
形後成形型から脱離することを特徴とするセラミ
ツクコーテイング繊維強化プラスチツク製レドー
ムの製造方法。1 After applying a mold release agent to the surface of the mold and spraying molten ceramic mist onto it, a woven reinforcing material is impregnated with a resin and semi-cured, resulting in a fiber-reinforced plastic board that is impregnated with a woven reinforcing material. Production of a ceramic-coated fiber-reinforced plastic radome, which is arranged on both sides of a honeycomb core made of thin plates of Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8560286A JPS62240543A (en) | 1986-04-14 | 1986-04-14 | Manufacture of radome made of ceramic coating fiber-reinforced plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8560286A JPS62240543A (en) | 1986-04-14 | 1986-04-14 | Manufacture of radome made of ceramic coating fiber-reinforced plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62240543A JPS62240543A (en) | 1987-10-21 |
| JPH0521069B2 true JPH0521069B2 (en) | 1993-03-23 |
Family
ID=13863372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8560286A Granted JPS62240543A (en) | 1986-04-14 | 1986-04-14 | Manufacture of radome made of ceramic coating fiber-reinforced plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62240543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003006A1 (en) * | 1988-09-12 | 1990-03-22 | Fujitsu Limited | Learning processing system of network structure data processing unit |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064306B2 (en) * | 1988-07-18 | 1994-01-19 | 住友軽金属工業株式会社 | Honeycomb panel |
| JPH02155637A (en) * | 1988-12-08 | 1990-06-14 | Shin Nippon Koa Kk | Panel |
| JPH04102308U (en) * | 1991-02-04 | 1992-09-03 | 日本電気株式会社 | Honeycomb structure radome |
| JP5263957B2 (en) * | 2009-01-26 | 2013-08-14 | 日本電気株式会社 | Radome and manufacturing method thereof |
| US8657984B1 (en) * | 2010-07-26 | 2014-02-25 | The United States Of America As Represented By The Secretary Of The Air Force | Method for fabricating composite grid-stiffened structures with integrated fluid channels |
| JP6552326B2 (en) * | 2015-08-07 | 2019-07-31 | 株式会社東海理化電機製作所 | Radio wave transmission parts |
| CN109494475A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of multi-layer honeycomb structure with enhancing radome root rigidity |
-
1986
- 1986-04-14 JP JP8560286A patent/JPS62240543A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003006A1 (en) * | 1988-09-12 | 1990-03-22 | Fujitsu Limited | Learning processing system of network structure data processing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62240543A (en) | 1987-10-21 |
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