We were asked about research on an old web site of ours... there's material that could be of interest still today. This is from wind tunnel tests we did some 25 years ago.
For London 2012, WB-Sails made a big research & development effort, mostly centered on Star sails. With the Star out of the Olympics, our R&D focus between 2012-2016 has been much on the Finn, but also on the 470. These two are the only Olympic classes left for which independent sailmakers are still allowed to design sails.