ES439834A1 - Wind turbine - Google Patents

Wind turbine

Info

Publication number
ES439834A1
ES439834A1 ES439834A ES439834A ES439834A1 ES 439834 A1 ES439834 A1 ES 439834A1 ES 439834 A ES439834 A ES 439834A ES 439834 A ES439834 A ES 439834A ES 439834 A1 ES439834 A1 ES 439834A1
Authority
ES
Spain
Prior art keywords
wind
blade
wind turbine
velocity ratio
drive rotor
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
Application number
ES439834A
Other languages
Spanish (es)
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.)
US Department of Energy
Energy Research and Development Administration ERDA
Original Assignee
US Department of Energy
Energy Research and Development Administration ERDA
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 US Department of Energy, Energy Research and Development Administration ERDA filed Critical US Department of Energy
Publication of ES439834A1 publication Critical patent/ES439834A1/en
Expired 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/212—Rotors for wind turbines with vertical axis of the Darrieus type
    • 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/213—Rotors for wind turbines with vertical axis of the Savonius type
    • 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

Abstract

A wind turbine rotatable about a shaft may include a drive rotor with one or more elongated blades each having a central outwardly curved portion of airfoil shape which produces rotary motion when the blade rotates in wind at a blade tip velocity to wind velocity ratio greater than about three or four, additional wind rotor means disposed at both ends of the curved portions of the elongated blade for rotatably accelerating the drive rotor to the desired velocity ratio, and means coupled to said rotors for utilizing the rotation thereof.
ES439834A 1974-09-20 1975-07-30 Wind turbine Expired ES439834A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508016A US3918839A (en) 1974-09-20 1974-09-20 Wind turbine

Publications (1)

Publication Number Publication Date
ES439834A1 true ES439834A1 (en) 1977-04-16

Family

ID=24021039

Family Applications (1)

Application Number Title Priority Date Filing Date
ES439834A Expired ES439834A1 (en) 1974-09-20 1975-07-30 Wind turbine

Country Status (12)

Country Link
US (1) US3918839A (en)
JP (1) JPS5166951A (en)
AU (1) AU8502675A (en)
BE (1) BE833581A (en)
CA (1) CA1042347A (en)
DE (1) DE2540757A1 (en)
ES (1) ES439834A1 (en)
FR (1) FR2285527A1 (en)
IT (1) IT1049691B (en)
NL (1) NL7508723A (en)
NO (1) NO753023L (en)
SE (1) SE7509005L (en)

Families Citing this family (119)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD243408S (en) * 1975-07-02 1977-02-15 Mcallister Jack G Wind driven electric generator
US4082479A (en) * 1975-09-25 1978-04-04 Canadian Patents And Development Limited Overspeed spoilers for vertical axis wind turbine
US4130380A (en) * 1976-05-13 1978-12-19 Kaiser Heinz W Wind powered turbine and airfoil construction
US4115032A (en) * 1977-03-07 1978-09-19 Heinz Lange Windmill rotor
JPS5417441A (en) * 1977-07-07 1979-02-08 Univ Tokai Vertical shaft type air force turbine
JPS5490542U (en) * 1977-12-09 1979-06-27
SE414072B (en) * 1978-10-06 1980-07-07 Olle Ljungstrom WIND TURBINE OF TRANSMISSION TYPE
SE414073B (en) * 1978-10-06 1980-07-07 Ljungstrom Olle WIND TURBINE OF TWO FLOWER TYPE SA CALLED BACK BLADE OR DARRIEV TYPE RESP GYROMILL TYPE WITH FIXED OR PA KNITTED CYLICALLY ADJUSTABLE BLAD ANGLE
GB2035468B (en) * 1978-10-11 1982-09-15 Pi Specialist Engs Ltd Vertical axis wind turbine
US4457669A (en) * 1978-10-24 1984-07-03 Corry William R Jibe mill
FR2452008A1 (en) * 1979-03-20 1980-10-17 Chaillou Jean Claude Vertical wind driven turbine for electricity generation - has blades twisted in form of mobius strip to ensure self-starting
US4281965A (en) * 1979-05-07 1981-08-04 Stjernholm Dale T Cantilever mounted wind turbine
EP0021790A1 (en) * 1979-06-19 1981-01-07 Frederick Charles Evans Vertical-axis windmills and turbines
JPS56143367A (en) * 1980-04-10 1981-11-09 Yoshihiro Seki Self starting high speed windmill of vertical shaft type
US4422825A (en) * 1980-04-29 1983-12-27 Boswell Fred A Controlled wind motor
FR2488658A1 (en) * 1980-08-13 1982-02-19 Bourriaud Michel VERTICAL TURBINE WIND POWER PLANT
ZA816875B (en) * 1980-10-07 1982-11-24 Sir Mcalpine R & Sons Ltd Wind powered turbine
FR2492005A1 (en) * 1980-10-15 1982-04-16 Even Daniel Vertical axis wind generator - has semi-cylindrical vertical blades for self starting with variable angle of incidence
DE3137966A1 (en) * 1981-09-24 1983-03-31 Braun, Juan, 4710 Herbesthal Wind power harvesting device
US4575311A (en) * 1981-12-21 1986-03-11 Indal Technologies Inc. Gear box assembly-upper head assembly
US4483657A (en) * 1982-09-29 1984-11-20 Kaiser Heinz W Wind turbine rotor assembly
FR2574490B2 (en) * 1982-10-28 1988-12-30 Lepoix Louis TURBINE FOR CAPTURING THE ENERGY OF MOVING FLUIDS, ESPECIALLY FOR WIND ENERGY
FR2583823B2 (en) * 1982-10-28 1988-11-25 Lepoix Louis TURBINE FOR CAPTURING THE ENERGY OF MOVING FLUIDS, ESPECIALLY FOR WIND ENERGY
US4500257A (en) * 1983-02-24 1985-02-19 The United States Of America As Represented By The United States Department Of Energy Wind turbine spoiler
US4624624A (en) * 1984-03-26 1986-11-25 Yum Nak I Collapsible vertical wind mill
US4543042A (en) * 1984-10-29 1985-09-24 Heinz Lange Windmill rotor
EP0188167B1 (en) * 1984-12-07 1989-12-13 Louis L. Lepoix Rotor for the conversion of moving-fluids energy, particularly wind energy
US4718821A (en) * 1986-06-04 1988-01-12 Clancy Brian D Windmill blade
JPH03501639A (en) * 1988-10-03 1991-04-11 モーゼル　ヨゼフ wind rotor
US5183386A (en) * 1988-12-23 1993-02-02 Lewis Feldman Vertical axis sail bladed wind turbine
US5171127A (en) * 1988-12-23 1992-12-15 Alexander Feldman Vertical axis sail bladed wind turbine
GB9021069D0 (en) * 1990-09-27 1990-11-07 Sutton Vane Vane Vertical axis wind turbines
DE9015945U1 (en) * 1990-11-23 1992-04-02 Dunker, Petra Christa Gretel, Geb. Rosema, 4030 Ratingen, De
US5176501A (en) * 1990-12-17 1993-01-05 The University Of British Columbia Propeller with an elastic sleeve
US5101237A (en) * 1991-03-22 1992-03-31 International Business Machines Corporation Toner metering apparatus with pressure equalization
US5252029A (en) * 1991-09-13 1993-10-12 Barnes Robert J Vertical axis wind turbine
US5405246A (en) * 1992-03-19 1995-04-11 Goldberg; Steven B. Vertical-axis wind turbine with a twisted blade configuration
DE4334910A1 (en) * 1993-10-13 1995-04-20 Hans Erich Gunder Rotary (rotating) wing with aerodynamic or hydrodynamic drive and output (performance) control
DE19532880C1 (en) * 1995-09-06 1996-11-07 Rolf Hoericht Wind power generating system mounted on pylon carrying overhead power line
US6023105A (en) * 1997-03-24 2000-02-08 Youssef; Wasfi Hybrid wind-hydro power plant
DE19835958B4 (en) * 1998-08-08 2004-12-02 Morrigan Gmbh Rotor driven by wind power
DE19859865B4 (en) * 1998-12-23 2006-11-09 Renate Lange wind converter
US7267530B2 (en) * 2000-11-22 2007-09-11 Mccabe Francis J Windmill apparatuses and methods of mounting blades to enhance their performance
DE10128438B4 (en) * 2001-05-03 2006-09-28 Wobben, Aloys, Dipl.-Ing. Wind turbine
JP3330141B1 (en) * 2001-11-09 2002-09-30 学校法人東海大学 Integrated windmill and its manufacturing method
SE525387C2 (en) * 2002-01-10 2005-02-08 Swedish Vertical Wind Ab Vertical axle wind turbine and its use
CA2369229A1 (en) * 2002-01-24 2003-07-24 Jacquelin Dery Vertical axis windmill and self-erecting structure therefor
KR20030065747A (en) * 2002-01-30 2003-08-09 원인호 Gathering device
ITMO20020025A1 (en) * 2002-02-07 2003-08-07 Vittorio Fiorini MEANS OF ENERGY GENERATORS
US20030209912A1 (en) * 2002-05-07 2003-11-13 Randall Badger Wind power electrical generating system
US7132760B2 (en) * 2002-07-31 2006-11-07 Becker William S Wind turbine device
NL1022393C2 (en) * 2003-01-15 2004-07-19 Aerolift Patent B V Wind energy conversion device as well as a rotor blade for use in such a device.
FR2857791B1 (en) 2003-07-15 2005-09-16 Legrand Sa ACCESSORY FOR AUTOMATIC LOCKING CHUTE
GB2415750B (en) * 2003-07-24 2006-07-26 Xc02 Ltd Vertical-axis wind turbine
US7362004B2 (en) * 2003-07-29 2008-04-22 Becker William S Wind turbine device
AU2003291807A1 (en) * 2003-11-20 2005-07-14 Gck Technology, Inc. Multi-piece complex twisted blades and method
FR2865777B1 (en) * 2004-02-04 2006-05-05 Inst Nat Polytech Grenoble HYDRAULIC TURBOMACHINE
EP2587051A3 (en) * 2005-05-13 2013-09-18 The Regents of the University of California Vertical axis wind turbines
EP1937965A2 (en) 2005-08-22 2008-07-02 Viryd Technologies Inc. Tubular fluid energy converter
US7287954B2 (en) * 2005-09-30 2007-10-30 California Energy & Power Omni directional baffled wind energy power converter apparatus and method
US7393177B2 (en) * 2005-11-04 2008-07-01 Rahai Hamid R Vertical axis wind turbine with optimized blade profile
CA2651931A1 (en) * 2006-05-10 2007-11-22 Viryd Technologies Inc. Fluid energy converter
KR100707132B1 (en) * 2006-05-26 2007-04-13 나경자 Rotor blade for a wind power generator
CN101512144B (en) * 2006-05-30 2012-04-25 解析设计服务公司 Vertical axis wind system and method thereof for generating electricity
US7896609B2 (en) * 2006-08-09 2011-03-01 Sri Vawt, Inc. Vertical axis wind turbine system
NL1032555C2 (en) * 2006-09-21 2008-03-25 Econcern B V Wind turbine with vertical axis and method for manufacturing it.
US20080085179A1 (en) * 2006-10-06 2008-04-10 California Energy & Power Wind power converting apparatus and method
US20110049894A1 (en) * 2006-10-06 2011-03-03 Green William M Electricity Generating Assembly
US7948110B2 (en) * 2007-02-13 2011-05-24 Ken Morgan Wind-driven electricity generation device with Savonius rotor
US8164210B2 (en) * 2007-03-07 2012-04-24 Boone Daniel N Vertical axis wind turbine with angled braces
US7944075B2 (en) * 2007-03-07 2011-05-17 Daniel Boone Wind turbine based energy storage system and method using heavy weighted devices
CA2685189C (en) * 2007-04-27 2015-06-02 Glenn Raymond Lux Modified darrieus vertical axis turbine
DE202007010873U1 (en) * 2007-08-03 2007-10-04 Fiber-Tech Products Gmbh Wind power machine
US20100322770A1 (en) * 2007-12-04 2010-12-23 Coriolis-Wind Inc. Turbine blade constructions particular useful in vertical-axis wind turbines
FR2926623B1 (en) * 2008-01-22 2014-09-12 Expansion Dev LIGHTING SYSTEM
FR2926622B1 (en) * 2008-01-22 2014-08-08 Expansion Dev LIGHTING DEVICE AND LIGHTING SYSTEM INCORPORATING SUCH A DEVICE
FR2926611A1 (en) * 2008-01-22 2009-07-24 Expansion Dev Sarl AEROGENERATOR AND LIGHTING SYSTEM SUCH AS URBAN OR SIMILAR LIGHTING COMPRISING SUCH AEROGENERATOR
US20090261595A1 (en) * 2008-04-17 2009-10-22 Hao-Wei Poo Apparatus for generating electric power using wind energy
US7744338B2 (en) 2008-09-04 2010-06-29 California Energy & Power Fluid turbine systems
US20100124506A1 (en) * 2008-11-14 2010-05-20 Great Wind Enterprises, Inc. Vertical axis wind turbine blade
WO2010071850A2 (en) * 2008-12-19 2010-06-24 Higher Dimension Materials, Inc. Multi-rotor vertical axis wind turbine
US7821153B2 (en) 2009-02-09 2010-10-26 Grayhawke Applied Technologies System and method for generating electricity
FR2944834A1 (en) * 2009-04-24 2010-10-29 Emmanuel Robert Lucien Porcher Savonius and Darrieus hybrid vertical axis wind turbine for use by e.g. small/average industrial/commercial structure, has baffles symmetrical with respect to each other or slightly asymmetrical to faces of blades
US8061993B2 (en) * 2009-05-04 2011-11-22 Seab Energy Ltd. Vertical axis turbine
US20120039712A1 (en) * 2009-05-08 2012-02-16 Yasuo Ueno Vertical axis wind turbine device
ITCO20090026A1 (en) * 2009-07-28 2011-01-28 Windesign S R L "HYBRID TURBINE WITH VERTICAL TREE FOR ELECTRIC ENERGY GENERATORS"
US20110027084A1 (en) * 2009-07-31 2011-02-03 Andrew Rekret Novel turbine and blades
CN201865840U (en) 2009-09-18 2011-06-15 北京希翼新兴能源科技有限公司 Impeller and windwheel of vertical shaft wind power generator
EP2488749B1 (en) * 2009-10-13 2016-06-08 Roberto Bolelli Energy conversion assembly
WO2011050452A1 (en) 2009-10-26 2011-05-05 Glenn Raymond Lux Lift-type vertical axis turbine
US8410627B2 (en) * 2009-10-30 2013-04-02 Stephen F. Cowap Self orienting vertical axis wind turbine
GR1007431B (en) * 2010-01-08 2011-10-12 Μυρων Ιωαννη Νουρης Vertical-shaft wind generator having blades for the suspension of excessive velocity
WO2011088377A2 (en) * 2010-01-14 2011-07-21 Coffey Daniel P Wind energy conversion device
US9482204B2 (en) * 2010-05-27 2016-11-01 Windstrip Llc Rotor blade for vertical axis wind turbine
TWI425145B (en) * 2010-11-15 2014-02-01 Hiwin Mikrosystem Corp Vertical wind power generator with automatically retractable blades
US8864440B2 (en) 2010-11-15 2014-10-21 Sauer Energy, Incc. Wind sail turbine
US8905704B2 (en) 2010-11-15 2014-12-09 Sauer Energy, Inc. Wind sail turbine
CO6460078A1 (en) * 2010-12-02 2012-06-15 Ecopetrol Sa SYSTEM FOR ELECTRICAL GENERATION FROM LOW SPEED WIND ENERGY WITH TWO DRIVING WING SYSTEMS
WO2012123968A2 (en) * 2011-03-14 2012-09-20 Valagam Rajagopal Raghunathan System and method of nacelle mounting enabling stacking/cascading of airfoil blade(s) in wind turbine
CN102322396A (en) * 2011-06-03 2012-01-18 江重华 Magnetic suspension wind-driven generator
ITPO20110012A1 (en) * 2011-06-20 2012-12-21 En Eco Energy For Ecology S R L AEROGENERATOR PERFECTED BY VERTICAL AXIS
ES1075900Y (en) * 2011-07-22 2012-03-22 Ind Technoflex Sa VERTICAL HUB AEROGENERATOR, PERFECTED
CN102493914B (en) * 2011-11-30 2013-12-25 上海大学 Auxiliary fan of lift-type vertical axis wind generator
KR101157389B1 (en) * 2012-02-03 2012-06-18 주식회사 한림메카트로닉스 Wind power generation apparatus for low wind speed
US8985948B2 (en) 2012-02-21 2015-03-24 Clean Green Energy LLC Fluid driven vertical axis turbine
ITPI20130067A1 (en) * 2013-07-12 2015-01-13 Treecube S R L WIND TURBINE WITH VERTICAL AXIS
US20150086366A1 (en) * 2013-09-24 2015-03-26 Robert Jeffrey Barnes Wind turbine blade and blade hub
US20150118053A1 (en) * 2013-10-25 2015-04-30 Abundant Energy, LLC High efficiency vertical axis wind turbine apparatus
CN107250531A (en) * 2014-08-12 2017-10-13 蒋素芳 A kind of wind power generation plant and system
CN104879272B (en) * 2015-05-20 2018-02-09 上海交通大学 Change the vertical axis windmill camber blades of line with novel changable base
CN106121911B (en) * 2016-08-25 2019-07-26 中冶华天工程技术有限公司 A kind of streamlined wind collection device
US11231084B2 (en) * 2017-12-12 2022-01-25 Martin W. Stryker Foldable flywheel mechanism to facilitate energy generation
US10975839B2 (en) * 2018-05-23 2021-04-13 William Olen Fortner Vertical axis wind turbines with V-cup shaped vanes, multi-turbine assemblies and related methods and systems
JP6449509B1 (en) 2018-06-08 2019-01-09 株式会社グローバルエナジー Vertical axis wind turbine, its vertically long blade and wind power generator
CA3109428A1 (en) * 2018-11-15 2020-05-22 Mark Daniel Farb Savonius wind turbine ratios
US11313348B2 (en) 2019-04-17 2022-04-26 University Of Maryland, Baltimore County Hybrid vertical axis turbine apparatus
US11859716B2 (en) 2019-04-17 2024-01-02 University Of Maryland, Baltimore County Time-delay closed-loop control of an infinitely variable transmission system for tidal current energy converters
US20210348595A1 (en) * 2020-05-11 2021-11-11 XFlow Energy Company Fluid turbine
WO2021256912A1 (en) * 2020-06-19 2021-12-23 Жандос Ескендiрұлы БАЙЖҰМА Darrieus wind turbine with starting system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1100332A (en) * 1912-09-03 1914-06-16 James B Smith Windmill.
US1697574A (en) * 1924-12-12 1929-01-01 Savonius Sigurd Johannes Rotor adapted to be driven by wind or flowing water
US1744924A (en) * 1925-04-13 1930-01-28 Charles E Sargent Wind motor
FR604390A (en) * 1925-10-09 1926-05-03 Leblanc Vickers Maurice Sa Turbine with axis of rotation transverse to the direction of the current
US2020900A (en) * 1934-01-18 1935-11-12 Wilbur E Methvin Stream motor

Also Published As

Publication number Publication date
IT1049691B (en) 1981-02-10
JPS5166951A (en) 1976-06-10
NO753023L (en) 1976-03-23
NL7508723A (en) 1976-03-23
AU8502675A (en) 1977-03-24
FR2285527B3 (en) 1978-05-05
US3918839A (en) 1975-11-11
CA1042347A (en) 1978-11-14
DE2540757A1 (en) 1976-04-08
FR2285527A1 (en) 1976-04-16
BE833581A (en) 1976-01-16
SE7509005L (en) 1976-03-22

Similar Documents

Publication Publication Date Title
ES439834A1 (en) Wind turbine
US4086026A (en) Windmill with radial vanes
SE7607529L (en) DEVICE FOR WIND TURBINES WITH VERTICAL AXLE
GB1531511A (en) Rotary device driven by a moving fluid
SE7713525L (en) WIND POWER PLANT
GB1456128A (en) Device for converting fluid flow kinetic enerby into rotational kinetic energy
FR2291379A1 (en) Wind driven turbine with vertical axis - has blades pivoted by rotor rotation mounted between two discs
DE59409401D1 (en) WIND TURBINE WITH H-ROTOR
US3924966A (en) Wind driven power generator
KR830006584A (en) Pungdong Turbine with You Trimining
GB1112058A (en) Variable-configuration turbo machine blades
FR2288877A1 (en) Wind driven generator fan with automatic pitch adjustment - has blade sections pivoted in response to inclinations and radial positions
NL7606729A (en) Wind driven turbine unit - has rotor of variable shape on vertical shaft
FR2291378A1 (en) Wind driven electric generator - with automatically variable pitch blades to prevent overspeed
FR2286955A1 (en) Turbine or windmill rotating about vertical axis - with cam to align hinged blades to suit fluid flow
FR2300233A1 (en) Windmill with variable pitch blades - pitch of blade is automatically reduced as wind force increases
JPS5312006A (en) Rotary machine
FR2453287A1 (en) Wind-driven motor for energy generation - uses staggered rotor stages each with stator vanes directing wind against circumferential rotor blades
FR2413567A1 (en) Turbine for wind-driven generator - has blades linked to common feathering mechanism with allows tilting in upstream direction at low speed
SE8400157L (en) WIND rotor element
GB1519988A (en) Rotary piston motor or pump
FR2295258A1 (en) Windmill which operates independently of wind direction - has hinged flaps to reduce resistance when moving against wind
GB778667A (en) Improvements in or relating to compressor blade root fixings
SU1502877A1 (en) Wind motor rotor
SU1150394A1 (en) Wind wheel