Quiet airfoils for small and large wind turbines
Abstract
Thick airfoil families with desirable aerodynamic performance with minimal airfoil induced noise. The airfoil families are suitable for a variety of wind turbine designs and are particularly well-suited for use with horizontal axis wind turbines (HAWTs) with constant or variable speed using pitch and/or stall control. In exemplary embodiments, a first family of three thick airfoils is provided for use with small wind turbines and second family of three thick airfoils is provided for use with very large machines, e.g., an airfoil defined for each of three blade radial stations or blade portions defined along the length of a blade. Each of the families is designed to provide a high maximum lift coefficient or high lift, to exhibit docile stalls, to be relatively insensitive to roughness, and to achieve a low profile drag.
- Inventors:
-
- Boulder, CO
- Port Matilda, PA
- Issue Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1055708
- Patent Number(s):
- 8197218
- Application Number:
- 11/937,183
- Assignee:
- Alliance for Sustainable Energy, LLC (Golden, CO)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
- DOE Contract Number:
- AC36-99GO10337
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY
Citation Formats
Tangler, James L, and Somers, Dan L. Quiet airfoils for small and large wind turbines. United States: N. p., 2012.
Web.
Tangler, James L, & Somers, Dan L. Quiet airfoils for small and large wind turbines. United States.
Tangler, James L, and Somers, Dan L. Tue .
"Quiet airfoils for small and large wind turbines". United States. https://www.osti.gov/servlets/purl/1055708.
@article{osti_1055708,
title = {Quiet airfoils for small and large wind turbines},
author = {Tangler, James L and Somers, Dan L},
abstractNote = {Thick airfoil families with desirable aerodynamic performance with minimal airfoil induced noise. The airfoil families are suitable for a variety of wind turbine designs and are particularly well-suited for use with horizontal axis wind turbines (HAWTs) with constant or variable speed using pitch and/or stall control. In exemplary embodiments, a first family of three thick airfoils is provided for use with small wind turbines and second family of three thick airfoils is provided for use with very large machines, e.g., an airfoil defined for each of three blade radial stations or blade portions defined along the length of a blade. Each of the families is designed to provide a high maximum lift coefficient or high lift, to exhibit docile stalls, to be relatively insensitive to roughness, and to achieve a low profile drag.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 12 00:00:00 EDT 2012},
month = {Tue Jun 12 00:00:00 EDT 2012}
}