Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines. Period of Performance: October 31, 2002 through January 31, 2003. Revised October 2004

摘要

Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines represents the fourth installment in a series of volumes documenting the ongoing work of the University of Illinois at Urbana-Champaign Low-Speed Airfoil Tests program (UIUC LSATs). This particular volume deals with airfoils that are candidates for use on small wind turbines, which operate at low Reynolds numbers. The airfoil performance tests were conducted in November 2002; prior to this, flow quality tests were carried out over a two-month period from late June to late August 2002. Chapter 1 presents the six airfoils tested and discusses the overall scope of the project. Chapter 2 gives an overview of the testing facility, including an extensive study of the flow quality of the UIUC lowspeed subsonic wind tunnel. In addition, the descriptions of the LSATs measurement hardware given in the first three volumes is summarized in Chapter 2. Chapter 3 provides a comparison between UIUC LSATs data and data obtained by NASA Langley in the Low-Turbulence Pressure Tunnel (LTPT). Chapter 4 briefy discusses the performance of the airfoils, and Chapter 5 contains the corresponding performance plots, including pitching-moment data. Appendices A and B list tabulated airfoil coordinates and drag polars, respectively. Finally, as a caveat, it is worth noting that in all of the LSATs test campaigns, only raw data are recorded and saved. These data are archival. On the other hand, the performance data can change over time as enhancements are made to the data reduction process. Thus, to compare these data with those of past test campaigns, it is important that comparisons only be made between data sets that are generated from archival raw data using the same version of the LSATs data reduction code.