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 spacersInfo
- 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
Links
- 125000006850 spacer group Chemical group 0.000 title abstract 2
- 239000004744 fabric Substances 0.000 abstract 2
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
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.
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)
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 |
-
1974
- 1974-09-30 FR FR7434543A patent/FR2292878A1/en active Granted
-
1975
- 1975-09-24 OA OA55615A patent/OA05114A/en unknown
Cited By (26)
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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