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Item type:Publication, Access status: with files , Design of a high efficiency podded drive for improved course keeping(Norwegian University of Science and Technology, Department of Marine Technology, 2024-04-04); ; ; The design of modern podded propulsion solutions is dominated by merging different, partly counteracting requirements at widely spread operating conditions. Whereas high propulsion efficiency is the key factor, large steering forces at small azimuth angles while maintaining reduced azimuth torque are of importance for a safe navigation with reasonable azimuth unit and bearing sizes. The paper introduces the approach to consider the different requirements in the early stage of a pod design of the SISHIP SiPOD 17M by application of numerical methods. Over a period of more than 25 years, the Potsdam model basin has developed optimizing methods for pods using series of model tests and numerical calculations to achieve an integral description of the interactions of propeller and housing. The numerical method is demonstrated by presenting the propeller design tool VTXopt with an optimization procedure designed as an inverse method. Enhanced numerical calculations using a RANS solver demonstrate the consequences of different fin and strut configurations on course-keeping and maneuvering. An improved steering capability with an attached fin at the cost of larger azimuth torque at small azimuth angles is observed, whereas the azimuth torque at large angles is reduced. The results are validated by model tests at the SVA Potsdam GmbH (SVA).Publicationtype: Conference Paper31 83