減速時の針路安定性についての一考察

概要

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When an advancing ship is decelerated by reversing the propeller rotation, the rudder loses almost all of its effectiveness, and, the ship is apt to deviate from its original course, then, the course prediction often becomes difficult. A course stability of a ship during stopping manoeuvre is considered to be changed by effects of manoeuvring derivative's change and deceleration. There are several studies on the course stability during stopping, but, almost of them are studies from one side of the two effects, that is derivative's change or deceleration. In this paper, the course stability during stopping was investigated by considering both effects, derivative's change and deceleration, and by using experimental data of VLCC model ship. Then, the following results were obtained on the course stability during stopping. That is, both effects, derivative's change and deceleration, to the course stability are same order, and that, the course stability changes according to intrinsic pattern of the ship with independent of the propeller revolutions per minute.
社団法人日本船舶海洋工学会の論文
1981-08-27