METHOD AND DEVICE OF MEASURING PERFORMANCE OF RUDDER

PROBLEM TO BE SOLVED: To provide a method and a device of measuring a performance of a rudder, capable of supplying a uniform flow without receiving an effect of a wake flow of a propeller dynamometer to a propeller and the rudder and to precisely measure the performance of the rudder obtained by removing the effect of wake flow by measuring a force received from a water current at that time. SOLUTION: A through hole 3 is formed in a rudder 2 disposed in the water along the fore-and-aft direction, a propeller shaft 4 is rotatably interested into the hole 3, a marine propeller 5 is mounted at a part at the front of the hole 3 of the propeller shaft 4, a propeller dynamometer 6 is connected to a part at the rear part of the hole 3 and the propeller dynamometer 6 and the rudder 2 are arranged in a water tank in which the propeller dynamometer and the rudder integrally advance or a uniform flow flows. Thus, the uniform flow without the effect of propeller dynamometer is applied to the propeller 5 and the rudder 2 located at the head part in the water. The force applied to the rudder 2 in that state is measured. COPYRIGHT: (C)2011,JPO&INPIT