DE3430656C2 - - Google Patents
Info
- Publication number
- DE3430656C2 DE3430656C2 DE19843430656 DE3430656A DE3430656C2 DE 3430656 C2 DE3430656 C2 DE 3430656C2 DE 19843430656 DE19843430656 DE 19843430656 DE 3430656 A DE3430656 A DE 3430656A DE 3430656 C2 DE3430656 C2 DE 3430656C2
- Authority
- DE
- Germany
- Prior art keywords
- foam
- pur
- edge zone
- antenna
- thickness
- 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 - Fee Related
Links
- 239000006260 foam Substances 0.000 claims description 27
- 238000005253 cladding Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000003989 dielectric material Substances 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 238000005187 foaming Methods 0.000 claims 1
- 229920002635 polyurethane Polymers 0.000 description 20
- 239000004814 polyurethane Substances 0.000 description 20
- 239000010410 layer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 239000010408 film Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0407—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the temperature of the mould or parts thereof, e.g. cold mould walls inhibiting foaming of an outer layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3456—Antennas, e.g. radomes
Landscapes
- Details Of Aerials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843430656 DE3430656A1 (de) | 1984-08-21 | 1984-08-21 | Verfahren zur herstellung von einzelelementen bzw. segmenten fuer antennenverkleidungen aus polyurethan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843430656 DE3430656A1 (de) | 1984-08-21 | 1984-08-21 | Verfahren zur herstellung von einzelelementen bzw. segmenten fuer antennenverkleidungen aus polyurethan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3430656A1 DE3430656A1 (de) | 1986-03-06 |
| DE3430656C2 true DE3430656C2 (enrdf_load_stackoverflow) | 1993-02-11 |
Family
ID=6243504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843430656 Granted DE3430656A1 (de) | 1984-08-21 | 1984-08-21 | Verfahren zur herstellung von einzelelementen bzw. segmenten fuer antennenverkleidungen aus polyurethan |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3430656A1 (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10128984A1 (de) * | 2001-06-11 | 2003-01-09 | Frank E Woetzel | Anordnung zum Schutz von Antennen und Antennenelementen für das elektromagnetische Wellenspektrum gegen Umwelteinflüsse, insbesondere klimatische Einflüsse |
| RU2733916C1 (ru) * | 2020-03-02 | 2020-10-08 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г. Ромашина" | Антенный обтекатель для скоростных ракет |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2474932C1 (ru) * | 2011-09-12 | 2013-02-10 | Открытое акционерное общество "Обнинское научно-производственное предприятие "Технология" | Антенный обтекатель |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1273023B (de) * | 1965-10-09 | 1968-07-18 | Gruenzweig & Hartmann | Verfahren zur Herstellung eines aus Hartschaumstoff bestehenden selbsttragenden turmartigen Gehaeuses zum Schutz funktechnischer Anlagen |
-
1984
- 1984-08-21 DE DE19843430656 patent/DE3430656A1/de active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10128984A1 (de) * | 2001-06-11 | 2003-01-09 | Frank E Woetzel | Anordnung zum Schutz von Antennen und Antennenelementen für das elektromagnetische Wellenspektrum gegen Umwelteinflüsse, insbesondere klimatische Einflüsse |
| DE10128984B4 (de) * | 2001-06-11 | 2007-04-26 | Wötzel, Frank E. | Anordnung zum Schutz von Antennen und Antennenelementen für das elektromagnetische Wellenspektrum gegen Umwelteinflüsse, insbesondere klimatische Einflüsse |
| RU2733916C1 (ru) * | 2020-03-02 | 2020-10-08 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г. Ромашина" | Антенный обтекатель для скоростных ракет |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3430656A1 (de) | 1986-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: WINKLER, THEES, DIPL.-ING., 3007 GEHRDEN, DE |
|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |