低速運動時の操縦流体力に関する実験結果について

概要

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In order to provide basic data needed to predict harbour maneuvering motions, we carried out captive model tests in the wide range of drift angle and turning rate by employing a tanker-type ship. The tests conducted in the present study consist of CircularMotion Tests, tests using propeller-rudder system without the ship body, and propeller open tests. This report gives experimental results concerning characteristics of hydrodynamic forces acting on the ship hull, interaction effect between the propeller and the rudder, and open water characteristics of the propeller with large drift angle. As a result, it is clarified that flow-straightening effect of hull and propeller, and increase of rudder inflow velocity due to propeller working do not change remarkably with magnitude of the maneuvering motions. Furthermore, an attempt is made to predict thrust of the propeller having large drift angle by applying Glauert's hypothesis belonging to aerodynamics of a helicopter rotor with forward speed. The method mentioned above gives good agreement with the experimental results for the thrust of the propeller in free stream.
社団法人日本船舶海洋工学会の論文
1988-06-30