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Title: 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:
 [1];  [2]
  1. Boulder, CO
  2. Port Matilda, PA
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1055708
Patent Number(s):
8,197,218
Application Number:
11/937,183
Assignee:
Alliance for Sustainable Energy, LLC (Golden, CO) NREL
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 = {2012},
month = {6}
}

Patent:

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