... Although competitive sailing yachts may sail fast today this is mainly due to material progress, not sail design. It is always difficult to design a set of sails for a given boat and sailing conditions. A sail has one design shape but an infinite number of corresponding flying shapes depending...

..., utilized RANS for upwind sail design and (e.g. aerodynamic separation on the mast or sails), and VPP aerodynamic force predictions. RANS was also can capture the subtle relationship between lift and drag used in the keel design process, and to provide "virtual as a sail is made fuller or flatter...

.... Each assumption tion of the shape measuring procedure used in this project places a constraint on the wind and the yacht as well as the and some comments on the two shaping techniques men­ resulting sail designs. As with any study, it is always hoped tioned above. The paper continues...