外洋フェリーの運動性能に関する研究 : (第1報) 斜波中模型実験及び理論計算

概要

論文の詳細を見る
Large car ferry boats of a long distance service around Japanese adjacent seas are rapidly increasing in number, and because of their special ship forms, their performances are needed to be investigated for the purpose of keeping their safety operations. The paper presents a free running model test result in regular oblique waves at the Mitaka No. 1 Ship Model Experiment Basin in comparison with the calculated result by strip methods, and a towed free roll test at the Mitaka No. 2 Ship Model Experiment Basin for obtaining the roll damping coefficients, with a 5m model of "Shiretoko-maru" (in service between Tokyo and Tomakomai, about 1,000km). In the free running test, pitch, roll, yaw, yaw rate, rudder angle and bow accelerations (vertical, transverse and longitudinal) were measured. Theoretical calculations on the above motions and accelerations (except longitudinal one) were carried out by strip methods separately with pitch and heave, and with roll, yaw and sway, to compare with the experiments. The agreement between experiments and calculations were proved to be good on the whole. In some special wave conditions in the experiments, when the encouter period was nearly half of the natural period of roll, unstable roll occurred. During the unstable roll of large amplitude, irregular bow accelerations were observed. From the analysis of the acceleration, it seemed that a big wave impulsive force was given to the hull in the vicinity of bow. On pitch and roll amplitudes, the nonlinearity to wave heights were found to be small.
独立行政法人海上技術安全研究所の論文
1974-12-26

外洋フェリーの運動性能に関する研究 : (第1報) 斜波中模型実験及び理論計算

スポンサーリンク

概要

著者

関連論文

スポンサーリンク