DK178192B1 - Støjreduktionsindretning til rotorvinge i en vindmølle - Google Patents

Støjreduktionsindretning til rotorvinge i en vindmølle Download PDF

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Publication number
DK178192B1
DK178192B1 DK201170711A DKPA201170711A DK178192B1 DK 178192 B1 DK178192 B1 DK 178192B1 DK 201170711 A DK201170711 A DK 201170711A DK PA201170711 A DKPA201170711 A DK PA201170711A DK 178192 B1 DK178192 B1 DK 178192B1
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DK
Denmark
Prior art keywords
noise reduction
rotor blade
noise
reduction features
rotor
Prior art date
Application number
DK201170711A
Other languages
English (en)
Inventor
Robert Karl Huck
Kevin Wayne Kinzie
James Paul Davidson
Roger Drobietz
Original Assignee
Gen Electric
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of DK201170711A publication Critical patent/DK201170711A/da
Application granted granted Critical
Publication of DK178192B1 publication Critical patent/DK178192B1/da

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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
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F05B2250/183—Geometry two-dimensional patterned zigzag
    • 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
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • 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

Claims (11)

1. Rotorvingeenhed (100) til en vindmølle (10), omfattende: - en rotorvinge (16), som har udvendige overflader, der definerer en trykside (22), en sugeside (24), en forkant (26) og en bagkant (28), der strækker sig mellem en spids (32) og en rod (34); hvor de udvendige overflader danner en kontinuerlig aerodynamisk profil; og - en støjreduktionsindretning (110), som er monteret på en udvendig overflade af rotorvingen, hvilken støjreduktionsindretning (110) omfatter: - en flerhed af støjreduktionsmidler (112), som hver især omfatter en første ende, der befinder sig i afstand fra rotorvingen (16), og en anden ende i nærheden af rotorvingen (16) i forhold til den første ende, og - en flerhed af yderligere støjreduktionsmidler (130), hvor hvert af flerheden af yderligere støjreduktionsmidler (130) er udformet på mindst et af flerheden af støjreduktionsmidler (112), og hvor mindst et af flerheden af yderligere støjreduktionsmidler (130) er udformet på et af flerheden af støjreduktionsmidler (112) mellem den første og den anden ende.
2. Rotorvingeenhed (100) ifølge krav 1, hvor mindst en del af flerheden af yderligere støjreduktionsmidler (130) hver især omfatter en flerhed af børstehår (140).
3. Rotorvingeenhed (100) ifølge krav 2, hvor mindst en del af flerheden af børstehår (140) strækker sig i det væsentlige vinkelret på en overflade af rotorvingen (16).
4. Rotorvingeenhed (100) ifølge krav 2 eller 3, hvor mindst en del af flerheden af børstehår (140) strækker sig i det væsentlige vinkelret på en overflade af et af flerheden af støjreduktionsmidler (112).
5. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor mindst en del af flerheden af yderligere støjreduktionsmidler (130) hver især omfatter en flerhed af duske (150).
6. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor mindst en del af flerheden af yderligere støjreduktionsmidler (130) hver især omfatter et porøst lag (160).
7. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor hvert af flerheden af støjreduktionsmidler (112) definerer en omkreds (128), og hvor mindst en del af flerheden af yderligere støjreduktionsmidler (130) hver især strækker sig ud over omkredsen (128) af støjreduktionsmidlet (112), på hvilket det yderligere støjreduktionsmiddel (130) er udformet.
8. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor mindst en del af flerheden af støjreduktionsmidler (112) hver især definerer en kanal (170), desuden omfattende en flerhed af monteringsmidler (172), som er udformet til at forbindes med kanalerne (170), og hvor mindst en del af flerheden af yderligere støjreduktionsmidler (130) er udformet på monteringsmidleme (172).
9. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor mindst en del af flerheden af støjreduktionsmidler (112) hver især omfatter en savtakning (120).
10. Rotorvingeenhed (100) ifølge et af de foregående krav, hvor støjreduktionsindretningen (110) er udformet tilstødende til bagkanten (28) af rotorvingen (16).
11. Vindmølle (10), som omfatter: - en flerhed af rotorvinger (16), hvor hver af flerheden af rotorvinger (16) er udformet ifølge et af de foregående krav.
DK201170711A 2010-12-16 2011-12-15 Støjreduktionsindretning til rotorvinge i en vindmølle DK178192B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97011910 2010-12-16
US12/970,119 US8267657B2 (en) 2010-12-16 2010-12-16 Noise reducer for rotor blade in wind turbine

Publications (2)

Publication Number Publication Date
DK201170711A DK201170711A (en) 2012-06-17
DK178192B1 true DK178192B1 (da) 2015-08-03

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DK201170711A DK178192B1 (da) 2010-12-16 2011-12-15 Støjreduktionsindretning til rotorvinge i en vindmølle

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US (1) US8267657B2 (da)
CN (1) CN102562436B (da)
DE (1) DE102011056491A1 (da)
DK (1) DK178192B1 (da)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8523515B2 (en) 2010-11-15 2013-09-03 General Electric Company Noise reducer for rotor blade in wind turbine
US8414261B2 (en) * 2011-05-31 2013-04-09 General Electric Company Noise reducer for rotor blade in wind turbine
US8834127B2 (en) 2011-09-09 2014-09-16 General Electric Company Extension for rotor blade in wind turbine
WO2013045601A1 (en) * 2011-09-29 2013-04-04 Lm Wind Power A/S A wind turbine blade
US9341158B2 (en) * 2011-12-08 2016-05-17 Inventus Holdings, Llc Quiet wind turbine blade
US8936435B2 (en) 2011-12-16 2015-01-20 General Electric Company System and method for root loss reduction in wind turbine blades
US8430638B2 (en) 2011-12-19 2013-04-30 General Electric Company Noise reducer for rotor blade in wind turbine
GB2497739A (en) * 2011-12-19 2013-06-26 Rolls Royce Plc Rotor blade with serrated trailing edge
WO2014048437A1 (en) * 2012-09-25 2014-04-03 Vestas Wind Systems A/S Noise attenuator for a wind turbine blade and a method for reducing wind turbine noise
CN102966487A (zh) * 2012-11-28 2013-03-13 苏州源源机械设备有限公司 水平轴降噪风力发电机风叶
US20150050154A1 (en) * 2013-05-23 2015-02-19 Kristian R. DIXON Airfoil trailing edge apparatus for noise reduction
US9267427B2 (en) 2013-06-11 2016-02-23 Ford Global Technologies, Llc Variable geometry turbine vane
JP2015042864A (ja) * 2013-07-24 2015-03-05 株式会社アイ・エヌ・シー・エンジニアリング ブレード及び風力発電用風車
ES2663672T3 (es) 2013-09-18 2018-04-16 Siemens Aktiengesellschaft Disposición para reducir el ruido de una pala de rotor de turbina eólica
EP2851555B1 (en) 2013-09-18 2018-03-21 Siemens Aktiengesellschaft Wind turbine rotor blade with serrated extension
US9638164B2 (en) 2013-10-31 2017-05-02 General Electric Company Chord extenders for a wind turbine rotor blade assembly
US9494134B2 (en) 2013-11-20 2016-11-15 General Electric Company Noise reducing extension plate for rotor blade in wind turbine
JP6500346B2 (ja) * 2014-05-22 2019-04-17 株式会社アイ・エヌ・シー・エンジニアリング ブレード及び風力発電用風車
GB201410675D0 (en) * 2014-06-16 2014-07-30 Univ Brunel Noise reduction to the trailing edge of fluid dynamic bodies
EP3099926A1 (en) 2014-06-18 2016-12-07 Siemens Aktiengesellschaft Rotor blade with noise reduction means
EP3164599B1 (en) * 2014-07-03 2019-04-17 LM WP Patent Holding A/S A wind turbine blade
CA2954716C (en) * 2014-07-14 2022-10-18 Lm Wp Patent Holding A/S A profile wedge for attachment of an aeroshell extender piece
US9849976B2 (en) * 2014-08-19 2017-12-26 The Boeing Company Noise reducing profile for helicopter rotor blade tracking wedges
CN104791199B (zh) * 2015-03-24 2018-04-20 北京金风科创风电设备有限公司 叶片尾缘附件及风力发电机组叶片
US10180125B2 (en) 2015-04-20 2019-01-15 General Electric Company Airflow configuration for a wind turbine rotor blade
DK3096003T3 (da) * 2015-05-21 2021-05-10 Siemens Gamesa Renewable Energy As Rotorvinge med takker til en vindmølle
WO2017180192A1 (en) * 2016-04-15 2017-10-19 Siemens Aktiengesellschaft Rotor blade with a serrated trailing edge
GB201520725D0 (en) 2015-11-24 2016-01-06 Vestas Wind Sys As improvements relating to wind turbine blades
US10240576B2 (en) 2015-11-25 2019-03-26 General Electric Company Wind turbine noise reduction with acoustically absorbent serrations
EP3181895A1 (en) * 2015-12-17 2017-06-21 LM WP Patent Holding A/S Splitter plate arrangement for a serrated wind turbine blade
US20170174321A1 (en) * 2015-12-18 2017-06-22 Amazon Technologies, Inc. Propeller treatments for sound dampening
US10011346B2 (en) 2015-12-18 2018-07-03 Amazon Technologies, Inc. Propeller blade indentations for improved aerodynamic performance and sound control
US10460717B2 (en) 2015-12-18 2019-10-29 Amazon Technologies, Inc. Carbon nanotube transducers on propeller blades for sound control
US10259574B2 (en) 2015-12-18 2019-04-16 Amazon Technologies, Inc. Propeller surface area treatments for sound dampening
US10099773B2 (en) 2015-12-18 2018-10-16 Amazon Technologies, Inc. Propeller blade leading edge serrations for improved sound control
US10933988B2 (en) 2015-12-18 2021-03-02 Amazon Technologies, Inc. Propeller blade treatments for sound control
US10259562B2 (en) 2015-12-18 2019-04-16 Amazon Technologies, Inc. Propeller blade trailing edge fringes for improved sound control
US10400744B2 (en) 2016-04-28 2019-09-03 General Electric Company Wind turbine blade with noise reducing micro boundary layer energizers
EP3249216A1 (en) 2016-05-27 2017-11-29 Siemens Aktiengesellschaft Rotor blade with noise reduction means
CN106246478B (zh) * 2016-09-28 2018-11-20 宁波峰微新材料科技有限公司 风机叶片用降噪装置
EP3348825B1 (en) 2017-01-12 2023-12-13 LM Wind Power A/S A wind turbine blade comprising a trailing edge noise reducing device
US10465652B2 (en) 2017-01-26 2019-11-05 General Electric Company Vortex generators for wind turbine rotor blades having noise-reducing features
CN108194258B (zh) * 2017-12-27 2020-01-31 江苏金风科技有限公司 用于叶片的降噪装置、叶片、风力发电机组和降噪方法
FR3078099B1 (fr) * 2018-02-16 2020-09-11 Safran Aircraft Engines Structure a profil en serrations avec des surfaces traitees
US10767623B2 (en) 2018-04-13 2020-09-08 General Electric Company Serrated noise reducer for a wind turbine rotor blade
EP3587799A1 (en) * 2018-06-27 2020-01-01 Siemens Gamesa Renewable Energy A/S Aerodynamic structure
DK3587798T3 (da) 2018-06-27 2020-11-23 Siemens Gamesa Renewable Energy As Aerodynamisk konstruktion
US10746157B2 (en) 2018-08-31 2020-08-18 General Electric Company Noise reducer for a wind turbine rotor blade having a cambered serration
US11163302B2 (en) 2018-09-06 2021-11-02 Amazon Technologies, Inc. Aerial vehicle propellers having variable force-torque ratios
CN109677589A (zh) * 2018-12-20 2019-04-26 中国空气动力研究与发展中心低速空气动力研究所 一种基于锯齿-刷毛耦合结构的后缘噪声抑制方法
CN109356802B (zh) * 2018-12-29 2019-10-01 南京航空航天大学 一种具有降噪结构的风力机叶片
KR102192061B1 (ko) * 2019-12-30 2020-12-16 서울대학교산학협력단 블레이드 소음 저감 장치
CN112727793B (zh) * 2021-01-11 2022-12-02 泛仕达机电股份有限公司 一种前缘仿生的叶片及包括该叶片的轴流风轮
CN113294286B (zh) * 2021-03-31 2023-02-03 江苏金风科技有限公司 叶片降噪装置、叶片及风力发电机组
CN113107757B (zh) * 2021-04-16 2022-03-04 北京腾燊科技有限公司 一种具有多级格栅锯齿的风电叶片及其风电机组

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338793A2 (en) * 2002-02-22 2003-08-27 Mitsubishi Heavy Industries, Ltd. Serrated wind turbine blade trailing edge
WO2008035149A2 (en) * 2006-02-23 2008-03-27 Stichting Nationaal Lucht- En Ruimtevaart Laboratorium Rotor blade for a wind turbine
US20080187442A1 (en) * 2007-02-07 2008-08-07 Kevin James Standish Rotor blade trailing edge assembly and method of use

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US175355A (en) 1876-03-28 Waltee king
US107540A (en) * 1870-09-20 Improvement in safety-valves
US104038A (en) * 1870-06-07 Improvement in seal-locks
US573562A (en) 1896-12-22 Propeller
US253114A (en) * 1882-01-31 Saddle-tree
US2899128A (en) 1959-08-11 Vaghi
US104436A (en) * 1870-06-21 Improved gattge-knife for cutting leather
US28161A (en) * 1860-05-08 Machines
US411823A (en) * 1889-10-01 Corn-planter
US1861065A (en) 1930-08-18 1932-05-31 Poot Philippe Screw-propeller for flying machines and other aerodynamics apparatus
US2071012A (en) * 1932-11-22 1937-02-16 Adams Herbert Luther Noiseless device
US2238749A (en) 1939-01-30 1941-04-15 Clarence B Swift Fan blade
US2312219A (en) 1941-04-21 1943-02-23 Sensenich Brothers Aircraft propeller
IT1036993B (it) 1974-07-02 1979-10-30 Rotron Inc Dispositivo per il movimento di un fluido
US4618313A (en) 1980-02-06 1986-10-21 Cofimco S.R.L. Axial propeller with increased effective displacement of air whose blades are not twisted
US4720244A (en) 1987-05-21 1988-01-19 Hudson Products Corporation Fan blade for an axial flow fan and method of forming same
US5088665A (en) 1989-10-31 1992-02-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Serrated trailing edges for improving lift and drag characteristics of lifting surfaces
US5320491A (en) 1992-07-09 1994-06-14 Northern Power Systems, Inc. Wind turbine rotor aileron
US5328329A (en) 1993-07-06 1994-07-12 Hudson Products Corporation Fan blade width extender
NL9301910A (nl) 1993-11-04 1995-06-01 Stork Prod Eng Windturbine.
US5522266A (en) 1993-11-30 1996-06-04 Medex, Inc. Low cost pressure transducer particularly for medical applications
JP2000120524A (ja) 1998-10-16 2000-04-25 Mitsubishi Heavy Ind Ltd 風車翼
EE200100306A (et) 1998-12-09 2002-08-15 Wobben Aloys Tuuleenergiaseadme rootorilaba
DE10020177A1 (de) * 2000-04-25 2001-11-08 Daimler Chrysler Ag Einrichtung zur Lärmminderung an Tragflügeln von Flugzeugen
BR0003706A (pt) 2000-05-30 2002-02-13 Tecsis Tecnologia E Sist S Ava Pá para ventilador axial de baixo ruìdo e alta eficiência
US6733240B2 (en) 2001-07-18 2004-05-11 General Electric Company Serrated fan blade
EP3219981B1 (en) 2001-07-19 2021-09-01 Vestas Wind Systems A/S Wind turbine blade
DE10157849A1 (de) 2001-11-24 2003-06-12 Airbus Gmbh Anordnung zur Minderung des aerodynamischen Lärms an einem Vorflügel eines Verkehrsflugzeuges
US7059833B2 (en) * 2001-11-26 2006-06-13 Bonus Energy A/S Method for improvement of the efficiency of a wind turbine rotor
US6872048B2 (en) 2001-11-26 2005-03-29 Lennox Industries, Inc. Fan with reduced noise generation
JP2003254225A (ja) 2002-03-05 2003-09-10 Ebara Corp 風車の気流騒音低減装置
US7632068B2 (en) 2003-03-31 2009-12-15 Technical University Of Denmark Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control
US7328770B2 (en) * 2005-06-16 2008-02-12 Owens Jeffrey A Strap silencer
US7637721B2 (en) 2005-07-29 2009-12-29 General Electric Company Methods and apparatus for producing wind energy with reduced wind turbine noise
EP1937965A2 (en) 2005-08-22 2008-07-02 Viryd Technologies Inc. Tubular fluid energy converter
ES2318925B1 (es) * 2005-09-22 2010-02-11 GAMESA INNOVATION & TECHNOLOGY, S.L. Aerogenerador con un rotor de palas que reduce el ruido.
US7458777B2 (en) 2005-09-22 2008-12-02 General Electric Company Wind turbine rotor assembly and blade having acoustic flap
DK176352B1 (da) 2005-12-20 2007-09-10 Lm Glasfiber As Profilserie til vinge til vindenergianlæg
US7740206B2 (en) 2006-04-13 2010-06-22 The Board Of Trustees Of The Leland Stanford Junior University Translating active Gurney flap to alleviate aircraft wake vortex hazard
WO2008108881A2 (en) 2006-09-08 2008-09-12 Steven Sullivan Method and apparatus for mitigating trailing vortex wakes of lifting or thrust generating bodies
US7959412B2 (en) 2006-09-29 2011-06-14 General Electric Company Wind turbine rotor blade with acoustic lining
US7811063B2 (en) 2006-11-03 2010-10-12 General Electric Company Damping element for a wind turbine rotor blade
US20080166241A1 (en) 2007-01-04 2008-07-10 Stefan Herr Wind turbine blade brush
US7413408B1 (en) 2007-02-22 2008-08-19 Samuel B Tafoya Vibration-reducing and noise-reducing spoiler for helicopter rotors, aircraft wings, propellers, and turbine blades
WO2008113349A2 (en) 2007-03-20 2008-09-25 Vestas Wind Systems A/S Slow rotating wind turbine rotor with slender blades
ES2345583B1 (es) 2007-05-31 2011-07-28 GAMESA INNOVATION & TECHNOLOGY, S.L. Pala de aerogenerador con dispositivos anti-ruido.
US7927078B2 (en) 2007-07-12 2011-04-19 General Electric Company Wind turbine blade tip vortex breakers
NL2000821C2 (nl) 2007-08-17 2009-02-18 Stichting Energie Windturbine en rotorblad.
US20090074585A1 (en) 2007-09-19 2009-03-19 General Electric Company Wind turbine blades with trailing edge serrations
US20090097976A1 (en) 2007-10-15 2009-04-16 General Electric Company Active damping of wind turbine blades
DE602007013566D1 (de) 2007-10-22 2011-05-12 Actiflow B V Windenergieanlage mit Grenzschichtsteuerung
GB2462308A (en) 2008-08-01 2010-02-03 Vestas Wind Sys As Extension portion for wind turbine blade
US9239039B2 (en) 2008-10-27 2016-01-19 General Electric Company Active circulation control of aerodynamic structures
US20100143151A1 (en) 2009-02-06 2010-06-10 General Electric Company Permeable acoustic flap for wind turbine blades
WO2010141720A2 (en) 2009-06-03 2010-12-09 Flodesign Wind Turbine Corp. Wind turbine blades with mixer lobes
US7976283B2 (en) 2010-11-10 2011-07-12 General Electric Company Noise reducer for rotor blade in wind turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338793A2 (en) * 2002-02-22 2003-08-27 Mitsubishi Heavy Industries, Ltd. Serrated wind turbine blade trailing edge
WO2008035149A2 (en) * 2006-02-23 2008-03-27 Stichting Nationaal Lucht- En Ruimtevaart Laboratorium Rotor blade for a wind turbine
US20080187442A1 (en) * 2007-02-07 2008-08-07 Kevin James Standish Rotor blade trailing edge assembly and method of use

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DK201170711A (en) 2012-06-17
US8267657B2 (en) 2012-09-18
US20110223030A1 (en) 2011-09-15
CN102562436A (zh) 2012-07-11
CN102562436B (zh) 2015-12-09
DE102011056491A1 (de) 2012-06-21

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