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After a certain time of operation, the conflict between Main engine, Propeller and Hull of ships have occurred, it causes decreasing of engine output and increasing the fuel consumption. Thus, it makes ship’s operation cost increasing respectively upon age of ships.
For solving this problem, researches have been conducted in Japan. That proved the best solution to reduce fuel consumption of the aged ships is modification of propeller. The modification of propeller of ship can be made in serveral following methods: Diameter cut (avoiding the torque rich by reducing the Propeller diameter), Twisted blade (twisting the blade at each blade root to get reducing of pitch) and Edge cut or Modification of edge.
According to current situation of Vietnam, Maritime Research Institute (MRI) – Vietnam Maritime University (VIMARU) found that Edge cut method would be the most applicable method
This Edge cut method has been applied to the merchant ship Glory Star (16.800 MT) in Ho Chi Minh city (Vietnam) from October 24th to December 24th 2012. As the result, calculating method of the edge cutting amount of propeller’s blades upon the actual conflict situation of Main engine, Propeller, Hull and the experiment have been studied, developed and obtained.
For solving this problem, researches have been conducted in Japan. That proved the best solution to reduce fuel consumption of the aged ships is modification of propeller. The modification of propeller of ship can be made in serveral following methods: Diameter cut (avoiding the torque rich by reducing the Propeller diameter), Twisted blade (twisting the blade at each blade root to get reducing of pitch) and Edge cut or Modification of edge.
According to current situation of Vietnam, Maritime Research Institute (MRI) – Vietnam Maritime University (VIMARU) found that Edge cut method would be the most applicable method
This Edge cut method has been applied to the merchant ship Glory Star (16.800 MT) in Ho Chi Minh city (Vietnam) from October 24th to December 24th 2012. As the result, calculating method of the edge cutting amount of propeller’s blades upon the actual conflict situation of Main engine, Propeller, Hull and the experiment have been studied, developed and obtained.
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