OVERVIEW Sandia National Laboratories (SNL), in partnership with the U.S. Department of Energy and Texas Tech University, constructed the Scaled Wind Farm Technology (SWiFT) facility in Lubbock, Texas. SNL developed SWiFT to enable rapid, cost-efficient testing and development of transformative wind energy technology. As part of this effort, ATA Engineering, Inc., (ATA) was contracted by SNL to perform modal testing on several components of the Vestas V27 wind turbines as well as two fully assembled V27 turbines to gain a better understanding of the structures. Test data was used for updating and correlating aeroelastic models to provide an accurate simulation capability. TASKS PERFORMED & KEY OUTCOMES h Modal testing on blades, hubs, nacelles, and towers, with results used to upda

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