DK178599B1 - Wind turbine rotor blades with reduced radar cross sections - Google Patents
Wind turbine rotor blades with reduced radar cross sections Download PDFInfo
- Publication number
- DK178599B1 DK178599B1 DKPA201370009A DK178599B1 DK 178599 B1 DK178599 B1 DK 178599B1 DK PA201370009 A DKPA201370009 A DK PA201370009A DK 178599 B1 DK178599 B1 DK 178599B1
- Authority
- DK
- Denmark
- Prior art keywords
- wind turbine
- turbine rotor
- rotor blade
- radar
- structural support
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 53
- 239000000945 filler Substances 0.000 claims description 31
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000004917 carbon fiber Substances 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 13
- 230000003247 decreasing effect Effects 0.000 claims 2
- 239000010410 layer Substances 0.000 description 77
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 22
- 239000011152 fibreglass Substances 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010348 incorporation Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000002346 layers by function Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 241001600180 Zacco Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/99—Radar absorption
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Claims (12)
1. Vindmøllerotorvinge (16) omfattende: en skal (40) omfattende en forkant (28) over for en bagkant (30); et strukturunderstøtningselement (50), som understøtter skallen (40) og er anbragt inden i skallen (40) mellem forkanten (28) og bagkanten (30) og strækker sig over mindst en del af en rotorvinges spændlængde (32), hvor strukturunderstøtnings elementet (50) omfatter carbonfiber; et eller flere hulrum (60) inden i vindmøllerotorvingen (16); og, et letvægtsfyldmateriale (70), der absorberer bredbåndsradar, anbragt i mindst et af det ene eller flere hulrum (60) for at tilvejebringe et reduceret radartværsnit.
2. Vindmøllerotorvinge (16) ifølge krav 1, hvor letvægtsfyldmaterialet (70), der absorberer bredbåndsradar, omfatter et skummateriale (lossy foam).
3. Vindmøllerotorvinge (16) ifølge krav 1 eller 2, hvor letvægtsfyldmaterialet (70), der absorberer bredbåndsradar, omfatter et variabelt carbonfyldt materiale, hvor mængden af carbon i letvægtsfyldmaterialet (70), der absorberer bredbåndsradar, er ikke-ensartet.
4. Vindmøllerotorvinge (16) ifølge et af kravene 1 til 3, hvor forkanten (28) omfatter et klæbemiddel, og letvægtsfyldmaterialet (70), der absorberer bredbåndsradar, er anbragt i et forkantshulrum (61), der grænser op til forkanten (28).
5. Vindmøllerotorvinge (16) ifølge krav 4, hvor klæbemidlet har en ikke-ensartet tykkelse.
6. Vindmøllerotorvinge (16) ifølge et af kravene 1 til 5, hvor bagkanten (30) også omfatter et klæbemiddel, og et letvægtsfyldmateriale (70), der absorberer bredbåndsradar, også er anbragt i et bagkantshulrum (62), der grænser op til bagkanten (30).
7. Vindmøllerotorvinge (16) ifølge et af kravene 1 til 6, hvor letvægts fyldmaterialet (70), der absorberer bredbåndsradar, i det mindste delvist absorberer radar over et frekvensområde, der spænder over mindst ca. 0,5 GHz.
8. Vindmøllerotorvinge (16) ifølge krav 7, hvor frekvensområdet spænder over mindst ca. 1,0 GHz.
9. Vindmøllerotorvinge (16) ifølge et af krav 1 til 8, yderligere omfattende et første modstandslag, der er anbragt rundt omkring skallen (40) mellem strukturunderstøtningselementet (50) og forkantsvingen (28) med henblik på yderligere at tilvejebringe det reducerede radartværsnit; og, et andet modstandslag, der er anbragt rundt omkring skallen (40) mellem strukturunderstøtningselementet (50) og bagkanten (30) med henblik på yderligere at tilvejebringe det reducerede radartværsnit.
10. Vindmøllerotorvinge (16) ifølge krav 9, hvor det første modstandslag og det andet modstandslag er anbragt udvendigt på skallen (40).
11. Vindmøllerotorvinge (16) ifølge krav 9 eller 10, hvor det første modstandslag har en aftagende modstand med en mindre modstand i nærheden af strukturunderstøtnings elementet (50) og en større modstand i nærheden af forkanten (28).
12. Vindmøllerotorvinge (16) ifølge et af krav 9 til 11, hvor det andet modstandslag har en aftagende modstand med en mindre modstand i nærheden af strukturunderstøtnings elementet (50) og en større modstand i nærheden af bagkanten (30).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/348,595 US9140234B2 (en) | 2012-01-11 | 2012-01-11 | Wind turbine rotor blades with reduced radar cross sections |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK201370009A DK201370009A (en) | 2013-07-12 |
| DK178599B1 true DK178599B1 (en) | 2016-08-08 |
Family
ID=48652729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA201370009 DK178599B1 (en) | 2012-01-11 | 2013-01-10 | Wind turbine rotor blades with reduced radar cross sections |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9140234B2 (da) |
| BR (1) | BR102013000703B1 (da) |
| DE (1) | DE102013100117B4 (da) |
| DK (1) | DK178599B1 (da) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2666615B1 (de) * | 2012-05-23 | 2015-03-04 | Nordex Energy GmbH | Verfahren zur Herstellung einer Windenergieanlagenrotorblatthalbschale bzw. eines Windenergieanlagenrotorblatts und Herstellungsform zu diesem Zweck |
| JP5995816B2 (ja) * | 2013-10-18 | 2016-09-21 | 三菱重工業株式会社 | 風車翼及び風力発電装置 |
| US9869295B2 (en) * | 2015-05-07 | 2018-01-16 | General Electric Company | Attachment method to install components, such as tip extensions and winglets, to a wind turbine blade, as well as the wind turbine blade and component |
| US9869296B2 (en) * | 2015-05-07 | 2018-01-16 | General Electric Company | Attachment method and system to install components, such as tip extensions and winglets, to a wind turbine blade |
| ES2613578B1 (es) * | 2015-11-24 | 2018-03-12 | Gamesa Innovation & Technology, S.L. | Pala de aerogenerador que comprende un sistema pararrayos equipada con material absorbente de radar |
| DE102016101663A1 (de) * | 2016-01-29 | 2017-08-03 | Wobben Properties Gmbh | Holmgurt und Herstellungsverfahren |
| EP3408532B1 (de) | 2016-01-29 | 2022-12-28 | Wobben Properties GmbH | Rotorblatt einer windenergieanlage mit holmgurt und herstellungsverfahren |
| US10626845B2 (en) * | 2016-08-30 | 2020-04-21 | King Abdulaziz University | Wind turbines with reduced electromagnetic scattering |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE252722C (da) | ||||
| FR2748719B1 (fr) | 1987-06-26 | 1999-05-07 | Aerospatiale | Pale a faible signature radar |
| DE3901012A1 (de) | 1989-01-14 | 1990-07-26 | Messerschmitt Boelkow Blohm | Rotorblatt |
| US5202701A (en) * | 1991-07-23 | 1993-04-13 | Grumman Aerospace Corporation | Low radar cross section reflector antenna |
| US5151222A (en) | 1991-08-26 | 1992-09-29 | Mcdonnell Douglas Corporation | Foam absorber |
| US20040048027A1 (en) | 2002-09-06 | 2004-03-11 | Hayes Michael W. | Honeycomb cores for aerospace applications |
| GB0806666D0 (en) | 2008-04-11 | 2008-05-14 | Bond Philip C | Windfarm radar clutter mitigation |
| DE102008024644B4 (de) | 2008-05-21 | 2018-07-26 | Airbus Defence and Space GmbH | Rotorblatt mit darin integriertem Radarabsorber für eine Windkraftanlage |
| US7841835B2 (en) | 2009-02-20 | 2010-11-30 | General Electric Company | Spar cap for wind turbine blades |
| EP2421702A4 (en) * | 2009-04-24 | 2013-01-02 | Applied Nanostructured Sols | NED SIGNATURE CONTROL MATERIAL |
| US7927077B2 (en) | 2009-07-09 | 2011-04-19 | General Electric Company | Wind blade spar cap laminate repair |
| GB2473020B (en) * | 2009-08-27 | 2012-02-01 | Vestas Wind Sys As | Wind turbine composite structures |
| GB0919198D0 (en) | 2009-11-02 | 2009-12-16 | Qinetiq Ltd | Wind turbine blades |
| GB2480064A (en) | 2010-05-04 | 2011-11-09 | Vestas Wind Sys As | RAM panel arrangements for a wind turbine tower |
-
2012
- 2012-01-11 US US13/348,595 patent/US9140234B2/en active Active
-
2013
- 2013-01-08 DE DE102013100117.3A patent/DE102013100117B4/de active Active
- 2013-01-10 BR BR102013000703-0A patent/BR102013000703B1/pt active IP Right Grant
- 2013-01-10 DK DKPA201370009 patent/DK178599B1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013100117B4 (de) | 2022-04-21 |
| DK201370009A (en) | 2013-07-12 |
| BR102013000703A8 (pt) | 2021-04-13 |
| BR102013000703B1 (pt) | 2021-11-16 |
| US9140234B2 (en) | 2015-09-22 |
| DE102013100117A1 (de) | 2013-07-11 |
| US20130177436A1 (en) | 2013-07-11 |
| BR102013000703A2 (pt) | 2015-05-19 |
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