MEASUREMENT OF PRESSURE DISTRIBUTION ON THE RUDDER WITH RUDDER ANGLE BEHIND A PROPELLER

The rudder behind the ship stern and a propeller plays an important role, not only in steering a ship but also in propulsive performance. The problem on the interaction between a propeller and a rudder was dealt with by one of the authors, using the simplified propeller theory and a thick wing theory. In the previous paper, the pressure measures in a large cavitation tunnel were reported on the rudder surface behind propeller models. The rudder angle, however, in the measurement was set to zero degrees. In this paper, the results of the pressure measurements on the rudder are presented, with several combinations of rudder angles, to improve the estimation technique on the rudder drag.