棒受網の模型実験-1-
スポンサーリンク
概要
- 論文の詳細を見る
A series of experiments on a model of saury blanket net (Bôuke-Ami), the scale of which was reduced to 1/52 to the full scale according to TAUTI S principle, were made for the purpose of study the sweeping volume of the net and variations of the shape in the course of lifting when the weight of sinkers, their position, and lifting speed were varied in a still water. The float line of the net was supported by a bamboo float which was fixed at a definite position of water surface by two outriggers, then the lead line was pulled up by the lifting lines. Stroboscopic photographs of lifting movement of the net are shown in Plate 1. According to the results obtained, the sweeping volume of the net seems to be larger with the weight of sinkers, when the lifting speed is kept constan ??, and to be larger with the lifting time when the weight of sinkers and its position are not altered, while the obvious diffrence due to the position of sinkers can not be recognized.
- 社団法人 日本水産学会の論文