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WO2007147177A3 - A blade - Google Patents

A blade Download PDF

Info

Publication number
WO2007147177A3
WO2007147177A3 PCT/ZA2007/000034 ZA2007000034W WO2007147177A3 WO 2007147177 A3 WO2007147177 A3 WO 2007147177A3 ZA 2007000034 W ZA2007000034 W ZA 2007000034W WO 2007147177 A3 WO2007147177 A3 WO 2007147177A3
Authority
WO
WIPO (PCT)
Prior art keywords
blade
cord length
elongate
section
length
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.)
Ceased
Application number
PCT/ZA2007/000034
Other languages
French (fr)
Other versions
WO2007147177A2 (en
Inventor
Martin Steyn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2007147177A2 publication Critical patent/WO2007147177A2/en
Publication of WO2007147177A3 publication Critical patent/WO2007147177A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/301—Cross-sectional characteristics
    • 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
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Wind Motors (AREA)

Abstract

The invention provides a blade (40) for a wind generator (10) which includes a connection member (60) which is connectable to a generator (26), an elongate, flexible blade body (62) which has a first elongate aerofoil section (70) which has a first cord length and a blade end section (68) which extends from the body and which has a second aerofoil section (88) which has a second cord length which has a maximum length which is longer than the first cord length at the junction of the body and the end section.
PCT/ZA2007/000034 2006-06-12 2007-07-02 A blade Ceased WO2007147177A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200604852 2006-06-12
ZA2006/04852 2006-06-12

Publications (2)

Publication Number Publication Date
WO2007147177A2 WO2007147177A2 (en) 2007-12-21
WO2007147177A3 true WO2007147177A3 (en) 2008-02-07

Family

ID=38686753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2007/000034 Ceased WO2007147177A2 (en) 2006-06-12 2007-07-02 A blade

Country Status (2)

Country Link
WO (1) WO2007147177A2 (en)
ZA (1) ZA200902100B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2017466A1 (en) 2007-07-20 2009-01-21 Siemens Aktiengesellschaft Wind turbine rotor blade and turbine rotor
GB201113694D0 (en) * 2011-08-09 2011-09-21 Univ Southampton Turbine generator
JP5493217B2 (en) * 2012-04-23 2014-05-14 学校法人文理学園 Windmill blade and windmill
CH707134A1 (en) * 2012-10-29 2014-04-30 Wepfer Technics Ag Rotor blade for wind turbine.
WO2019019161A1 (en) 2017-07-28 2019-01-31 深圳市大疆创新科技有限公司 Airscrew, power assembly and air vehicle
DK3686423T3 (en) * 2019-01-22 2023-02-27 Wepfer Technics Ag Rotor blade for a wind turbine
FR3137136B1 (en) * 2022-06-28 2025-07-11 Sas Flexeole Wind turbine blade with optimized tip shape

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944718A1 (en) * 1979-11-06 1981-05-21 Hans-Dietrich Ing.(grad.) 2000 Hamburg Goslich ROTOR FOR LIGHTWEIGHT WIND TURBINES
DE19738278A1 (en) * 1997-09-02 1999-03-04 Felix Hafner Adaptive rotor for wind power plants
US6457671B1 (en) * 2001-09-05 2002-10-01 Norman Sherman Funneled rotary foil
DE20301445U1 (en) * 2003-01-30 2004-06-09 Moser, Josef rotor blade
WO2004061298A2 (en) * 2003-01-02 2004-07-22 Aloys Wobben Wind turbine rotor blade with reduced noise emission
EP1832744A1 (en) * 2004-11-30 2007-09-12 Global Energy Co., Ltd. Propeller and horizontal-shaft windmill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944718A1 (en) * 1979-11-06 1981-05-21 Hans-Dietrich Ing.(grad.) 2000 Hamburg Goslich ROTOR FOR LIGHTWEIGHT WIND TURBINES
DE19738278A1 (en) * 1997-09-02 1999-03-04 Felix Hafner Adaptive rotor for wind power plants
US6457671B1 (en) * 2001-09-05 2002-10-01 Norman Sherman Funneled rotary foil
WO2004061298A2 (en) * 2003-01-02 2004-07-22 Aloys Wobben Wind turbine rotor blade with reduced noise emission
DE20301445U1 (en) * 2003-01-30 2004-06-09 Moser, Josef rotor blade
EP1832744A1 (en) * 2004-11-30 2007-09-12 Global Energy Co., Ltd. Propeller and horizontal-shaft windmill

Also Published As

Publication number Publication date
WO2007147177A2 (en) 2007-12-21
ZA200902100B (en) 2010-09-29

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