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Schepers, J.G. (author), Oerlemans, S. (author), Guidati, G. (author), Wagner, S. (author)The objective of the European project DATA (Design and Testing of Acoustically Optimized Airfoils for Wind Turbines) is a reduction of trailing-edge (TE) noise by modifying the airfoil shape and/or the application of trailing-edge serrations. This paper describes validation measurements that were performed in the DNW-LLF wind tunnel, on a model...report 2001