Airfoils for wind turbine

Tangler, James L; Somers, Dan M

Title: Airfoils for wind turbine

Abstract

Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maximum lift coefficient in a range of about 1.4 to 1.5. In another embodiment, the airfoil is shaped and contoured to have a thickness in a range of about fourteen percent to sixteen percent, a Reynolds number in a range of about 1,500,000 to 3,000,000, and a maximum lift coefficient in a range of about 0.7 to 1.5. Another embodiment of the airfoil is shaped and contoured to have a Reynolds in a range of about 1,500,000 to 4,000,000, and a maximum lift coefficient in a range of about 1.0 to 1.5.

Inventors:

Tangler, James L ^[1]; Somers, Dan M ^[2]

Boulder, CO
State College, PA

Issue Date:: 2000-01-01

Research Org.:: Midwest Research Institute, Kansas City, MO (United States)

OSTI Identifier:: 873012

Patent Number(s):: 6068446

Assignee:: Midwest Research Institute (Kansas City, MO)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

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F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
F05B2240/301 - Cross-section characteristics

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S416/02 - Formulas of curves

F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
F03D1/0641 - {of the section profile of the blades}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S416/05 - Variable camber or chord length

Y - NEW / CROSS SECTIONAL TECHNOLOGIES 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
Y02E10/72 - Wind turbines with rotation axis in wind direction

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DOE Contract Number:: AC36-83CH10093

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: airfoils; wind; turbine; tip; mid-span; regions; blade; upper; surface; shapes; contours; leading; edge; trailing; minimize; roughness; effects; airfoil; provide; maximum; lift; coefficients; insensitive; embodiment; shaped; contoured; thickness; range; fourteen; seventeen; percent; reynolds; 500; 000; coefficient; sixteen; lift coefficient; maximum lift; leading edge; wind turbine; upper surface; turbine blade; trailing edge; provide maximum; roughness effects; surface shape; /416/

Citation Formats


                    Tangler, James L, and Somers, Dan M. Airfoils for wind turbine.  United States: N. p., 2000. 
        Web.

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                    Tangler, James L, & Somers, Dan M. Airfoils for wind turbine.  United States.

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                    Tangler, James L, and Somers, Dan M. Sat .  
        "Airfoils for wind turbine".  United States.  https://www.osti.gov/servlets/purl/873012.

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@article{osti_873012,

  title        = {Airfoils for wind turbine},

  author       = {Tangler, James L and Somers, Dan M},

  abstractNote = {Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maximum lift coefficient in a range of about 1.4 to 1.5. In another embodiment, the airfoil is shaped and contoured to have a thickness in a range of about fourteen percent to sixteen percent, a Reynolds number in a range of about 1,500,000 to 3,000,000, and a maximum lift coefficient in a range of about 0.7 to 1.5. Another embodiment of the airfoil is shaped and contoured to have a Reynolds in a range of about 1,500,000 to 4,000,000, and a maximum lift coefficient in a range of about 1.0 to 1.5.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2000},

  month        = {1}

}

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Works referenced in this record:

Wing-section effects on the flight performance of a remotely pilotedvehicle
journal, October 1989

Stollery, J. L.; Dyer, D. J.
Journal of Aircraft, Vol. 26, Issue 10
https://doi.org/10.2514/3.45864

Thick airfoils for HAWTs
journal, January 1992

Timmer, W. A.; van Rooy, R. P. J. O. M.
Journal of Wind Engineering and Industrial Aerodynamics, Vol. 39, Issue 1-3
https://doi.org/10.1016/0167-6105(92)90541-H

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Title: Airfoils for wind turbine

Abstract

Citation Formats

Wing-section effects on the flight performance of a remotely pilotedvehicle journal, October 1989

Thick airfoils for HAWTs journal, January 1992

Wing-section effects on the flight performance of a remotely pilotedvehicle
journal, October 1989

Thick airfoils for HAWTs
journal, January 1992