Manufacture of propeller for high speed ship
Due to the gradual development of large-scale high-speed ships, the changes in the stern structure have a huge impact on the wake distribution of the propeller disc. The circle is a process of entering and exiting the high and low wake field. In this process, the non-skew type blade guide edge enters the wake area almost at the same time, which will increase the induced excitation force to the hull and bring hidden dangers to the safety of the hull ; Due to the uneven distribution of the wake field in the stern, if the pitch of the blades in different radius layers is the same, it cannot adapt to the incoming flow speeds of the different wake fields, so the propulsion efficiency will be reduced; The pressure distribution of the back will have an impact. No longitudinal tilt reduces the unloading capacity of the blade, reduces the compressive strength of the blade, and thus affects the service life.
