... of wind directions and wind speeds. Steady-state VPPs can be very efficient and fast and may be used to rapidly assess a large number of design alternatives. However, steady-state VPPs are not able to consider dynamic effects such as unsteady wave forces on the hull which may require the rudder...

... in Fig. 1. The original, non­foiling Viper has ­just like regular multihulls­ two straight rudders for steering situated at the back of the boat and two straight daggerboards towards the middle of the boat to limit the drift. To enable foiling, a smaller, horizontal symmetric foil is added to the bottom...

..., Y Force components along x- and y-axis in horizontal body axis system (kgf) ZCE Vertical coordinate of the centre of effort (m) Leeway angle (deg) A Apparent wind angle (deg) T True wind angle (deg) Rudder angle (deg) Heel angle or roll angle (deg) Heading angle (deg) a Density of air (kg...

... for future work. Results show that the open water testing broadly matches well with model-scale tank testing, with the mean discrepancy in the measured resistance between the two around 4% over the speed range tested after correction for the presence of the rudder. Agreement is initially less good...

...Adam Persson; Lars Larsson; Matz Brown; Christian Finnsgard As a follow up to the Olympic Games, commercially available Finn dinghy rudders were tested to determine their hydrodynamic performance. Seven rudders were tested, out of the nine different rudder models that were measured for competition...

... formulation dimension proceedings calculation hull keel sailing yacht yacht rudder appendage de ridder frequency maneuver excitation journal Journal of Sailing Technology, Article 2017-06. © 2017, The Society of Naval Architects and Marine Engineers. A NEW MATHEMATICAL MODEL FOR INVESTIGATING...