RUDDER ASSEMBLY FOR SHIP WITH HIGH SPEED WITH CAVITATION REDUCING TWISTED RUDDER, IN PARTICULAR, WHOLE BALANCING RUDDER

摘要

PROBLEM TO BE SOLVED: To provide a ship rudder having a large, or extremely large size, avoiding the erosion phenomena of a rudder blade due to cavitation occurrence, in particular, a balancing rudder blade equipped with a torsion rudder leading edge.;SOLUTION: A rubber assembly has a thin profile and a low profile thickness, and comprises: a torsion whole balancing rudder blade equipped with a propeller 115 facing the rudder blade 100; a rudder post 140 disposed inside the rudder blade; and a trunk tube 120 disposed above the rudder blade. The rudder blade has two rudder blade parts 10, 20 having different heights. Regarding tip edges 11, 21 facing the propeller, the tip edge 11 is inclined to port or starboard while the tip edge 21 is inclined to starboard or port. A sidewall surface of the rudder blade constricts to a rear strip 15 and has a curved course so as to form a floating body. A guiding board 200 covering a shift area is provided in inclined areas of the two rudder blade parts. The rudder post and the rudder blade functionally cooperate with each other.;COPYRIGHT: (C)2009,JPO&INPIT