FR2292878A1 - Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers - Google Patents

Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers

Info

Publication number
FR2292878A1
FR2292878A1 FR7434543A FR7434543A FR2292878A1 FR 2292878 A1 FR2292878 A1 FR 2292878A1 FR 7434543 A FR7434543 A FR 7434543A FR 7434543 A FR7434543 A FR 7434543A FR 2292878 A1 FR2292878 A1 FR 2292878A1
Authority
FR
France
Prior art keywords
flexible
rigid
trailing edge
spar
blade
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.)
Granted
Application number
FR7434543A
Other languages
French (fr)
Other versions
FR2292878B3 (en
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
Priority to FR7434543A priority Critical patent/FR2292878A1/en
Priority to OA55615A priority patent/OA05114A/en
Publication of FR2292878A1 publication Critical patent/FR2292878A1/en
Application granted granted Critical
Publication of FR2292878B3 publication Critical patent/FR2292878B3/fr
Granted 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
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • 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
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • 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
    • Y02E10/20—Hydro energy
    • 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

Abstract

The flexible blade or sail has a rigid leading edge spar (1) and a flexible trailing edge spar (5) which support a fabric surface (6). In order to maintain a tension in the fabric the profiled spacers (12) are fitted between the spars (1 and 5). By pivoting the flexible spar (5) at its mounting point and then changing its alignment with respect to the rigid spar (6) the angle of incidence of the leading edge can be changed as well as the magnitude of warp of the surface (6). A sail or blade of this type can be used with a windmill and increases its efficiency. It can also be applied to flapping wing flying machines.
FR7434543A 1974-09-30 1974-09-30 Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers Granted FR2292878A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7434543A FR2292878A1 (en) 1974-09-30 1974-09-30 Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers
OA55615A OA05114A (en) 1974-09-30 1975-09-24 Flexible airfoil, method for using said airfoil and applications.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7434543A FR2292878A1 (en) 1974-09-30 1974-09-30 Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers

Publications (2)

Publication Number Publication Date
FR2292878A1 true FR2292878A1 (en) 1976-06-25
FR2292878B3 FR2292878B3 (en) 1977-07-22

Family

ID=9144085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7434543A Granted FR2292878A1 (en) 1974-09-30 1974-09-30 Flexible blade for wind driven machine - has rigid and flexible leading and trailing edge spars with profiled spacers

Country Status (2)

Country Link
FR (1) FR2292878A1 (en)
OA (1) OA05114A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033176A2 (en) * 1980-01-23 1981-08-05 Paul Alexander Witsenburg Rotor for wind motor, fan or the like
US4316699A (en) * 1979-08-24 1982-02-23 Schott Lawrence A Windmill structure and power generator
FR2495696A1 (en) * 1980-12-04 1982-06-11 Collin Yvon Blade positioning hub for wind turbine - has sliding sleeve on hub with guy rods to fold and lock blades
EP0270136A1 (en) * 1986-10-23 1988-06-08 Horace Schuurwegen Windmill with rotatable vanes
EP0291002A1 (en) * 1987-05-14 1988-11-17 Anton Wildenauer Blade for a windmill rotor
US4832571A (en) * 1987-12-23 1989-05-23 Carrol Frank L Flexible tethered wind turbine
US5083902A (en) * 1986-12-18 1992-01-28 Rhodes Winfred A Reverting wind wheel
US5269656A (en) * 1992-09-30 1993-12-14 The United States Of America As Represented By The Secretary Of The Navy High damping limp propeller
WO2004029448A1 (en) * 2002-09-27 2004-04-08 Marine Current Turbines Limited Fatigue resistant large hollow rotor blade for underwater energy converter
WO2010118509A1 (en) * 2009-04-14 2010-10-21 Quintal Rejean Horizontal wind powered turbine
CN102619693A (en) * 2012-04-05 2012-08-01 昂海松 Wind driven generator with bionic wing structure blades
US8336809B2 (en) * 2007-02-13 2012-12-25 Proxflyer As System for controlling flight direction
CN103696912A (en) * 2013-12-26 2014-04-02 南京航空航天大学 Ground-effect-based flapping-wing wind turbine and operating method thereof
GB2543278A (en) * 2015-10-12 2017-04-19 Act Blade Ltd Wind Turbine Blade
AU2015291050B2 (en) * 2014-07-15 2018-06-28 Okinawa Institute Of Science And Technology School Corporation Wave energy converter
EP2469077B1 (en) * 2003-01-02 2020-05-27 Wobben Properties GmbH Wind turbine with a wind turbine blade

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316699A (en) * 1979-08-24 1982-02-23 Schott Lawrence A Windmill structure and power generator
EP0033176A3 (en) * 1980-01-23 1982-01-20 Paul Alexander Witsenburg Rotor for wind motor, fan or the like
EP0033176A2 (en) * 1980-01-23 1981-08-05 Paul Alexander Witsenburg Rotor for wind motor, fan or the like
FR2495696A1 (en) * 1980-12-04 1982-06-11 Collin Yvon Blade positioning hub for wind turbine - has sliding sleeve on hub with guy rods to fold and lock blades
EP0270136A1 (en) * 1986-10-23 1988-06-08 Horace Schuurwegen Windmill with rotatable vanes
US5083902A (en) * 1986-12-18 1992-01-28 Rhodes Winfred A Reverting wind wheel
EP0291002A1 (en) * 1987-05-14 1988-11-17 Anton Wildenauer Blade for a windmill rotor
US4832571A (en) * 1987-12-23 1989-05-23 Carrol Frank L Flexible tethered wind turbine
US5269656A (en) * 1992-09-30 1993-12-14 The United States Of America As Represented By The Secretary Of The Navy High damping limp propeller
WO2004029448A1 (en) * 2002-09-27 2004-04-08 Marine Current Turbines Limited Fatigue resistant large hollow rotor blade for underwater energy converter
US7360993B2 (en) 2002-09-27 2008-04-22 Marine Current Turbines, Ltd. Fatigue resistant large hollow rotor blade for underwater energy converter
EP2469077B1 (en) * 2003-01-02 2020-05-27 Wobben Properties GmbH Wind turbine with a wind turbine blade
US8336809B2 (en) * 2007-02-13 2012-12-25 Proxflyer As System for controlling flight direction
CN102459882A (en) * 2009-04-14 2012-05-16 R.昆塔尔 Horizontal wind powered turbine
CN102459882B (en) * 2009-04-14 2014-02-19 R.昆塔尔 Horizontal wind powered turbine
US8840360B2 (en) 2009-04-14 2014-09-23 Réjean QUINTAL Horizontal wind powered turbine
WO2010118509A1 (en) * 2009-04-14 2010-10-21 Quintal Rejean Horizontal wind powered turbine
CN102619693A (en) * 2012-04-05 2012-08-01 昂海松 Wind driven generator with bionic wing structure blades
CN102619693B (en) * 2012-04-05 2014-04-16 昂海松 Wind driven generator with bionic wing structure blades
CN103696912A (en) * 2013-12-26 2014-04-02 南京航空航天大学 Ground-effect-based flapping-wing wind turbine and operating method thereof
CN103696912B (en) * 2013-12-26 2016-08-31 南京航空航天大学 A kind of flap wing wind energy conversion system and method for work of based on ground effect
AU2015291050B2 (en) * 2014-07-15 2018-06-28 Okinawa Institute Of Science And Technology School Corporation Wave energy converter
GB2543278A (en) * 2015-10-12 2017-04-19 Act Blade Ltd Wind Turbine Blade
WO2017064475A1 (en) * 2015-10-12 2017-04-20 Act Blade Limited Wind turbine blade
GB2543278B (en) * 2015-10-12 2017-10-11 Act Blade Ltd Wind turbine blade with at least one slidable supporting element
US10914284B2 (en) 2015-10-12 2021-02-09 Act Blade Limited Wind turbine blade

Also Published As

Publication number Publication date
OA05114A (en) 1981-01-31
FR2292878B3 (en) 1977-07-22

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