Direct scantling assessment of propeller blades |
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| Institution: | 1. Faculty of Aerospace Engineering, Department Design and Production of Composite Structures, Technical University Delft, Kluyverweg 1, 2629 HS Delft, The Netherlands;2. Airborne Composites B.V, Box 24301, 2490 AA Den Haag, Netherlands;3. Katholieke Universiteit Leuven, Department of Mechanical Engineering, Box 2420, Celestijnenlaan 300 B, B-3001 Leuven, Belgium;1. Ghent University – iMinds, Department of Information Technology (INTEC), Gaston Crommenlaan 8 Bus 201, 9050 Ledeberg-Ghent, Belgium;2. Noesis Solutions, Gaston Geenslaan 11 B4, 3001 Leuven, Belgium;1. Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST), Beijing 100083, China;3. National Institute for Nanotechnology (NINT), National Research Council (NRC), Edmonton, Alberta T6G 2M9, Canada |
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| Abstract: | Traditionally, propeller design has been focused on all activities necessary to obtain a propeller featuring a high efficiency, avoiding erosive cavitation for given operating conditions and having adequate structural strength. In recent years, more and more challenging requirements have been imposed, such as the reduction of radiated noise and pressures pulses, requiring more precise analyses and methods in the optimization of the propeller performance. On the other hand, the evaluation of the propeller strength still relies on simplified methods, which basically consider the blade as a cantilever beam subjected to characteristic static forces. Since the loads acting on a blade are variable in the blade revolution and in different operating conditions throughout the ship life, a procedure to account for the influence of fatigue phenomena is proposed. The fatigue assessment could reduce the safety factor in the propeller scantling rules and allow improving the quality of propeller design (e.g. obtaining higher efficiency, margin on cavitation phenomena, less noise). |
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| Keywords: | Propeller Scantling Design Fatigue assessment Bronze CFD FEM |
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