模型船用航跡記録装置の試作

概要

論文の詳細を見る
The course stability of a ship is generally judged from a curve made by the relation about the ship length versus the radius obtained in turnng test of the ship, that is to say, L/R curve. Now, in a purpose of getting this curve by the fundamental investigation in the huge vessels, it was necessary to try the turning test by a small model ship and to convert it into an assumed curve for the huge vessels. Therefore, we produced a trial trajectory record equipment for the small model ship. The equipment has a principle that, while two men in two fixed positions on land at intervals of a certain distance, each other are to pursue through a respective telescope over a point on this small ship which is turning, some electronic digital signals corresponding to the sine and cosine vaues of angular in a straight line between a point on the ship to each position and a position to the other position on land is given as output signals of a particular angular detector in each position which is to follow the movement of the telescope-axis in each ; the position of the ship in that time is computed by the digital signals which is directly adopted to input signals of a mini table computer available from any market. The equipment has such a characteristic that it permits to draw instantly the position of the ship by a incrementary record form, in sensitive 10 centimenters in sampling period 3 secondes.
社団法人日本船舶海洋工学会の論文