ボール進水時の保距具の浮遊について

概要

論文の詳細を見る
The ball launching of ten ships were conducted successfully. However the trouble happened recently that the last part of distance pieses lifted and dropped from the standing way. As a reason, it was considered that the launching velocity was faster and the sliding distance become longer because of shorter ship length. Besides various kinds of causes were investigated with the assistance of model experiments in our circulating water tank. Through the experiments, it was confirmed that such trouble was caused by hydrodynamic force acting to the distance piece. Then the pressure and lifting force acting to the distance pieces were measured to investigate the more details. We made the lifting critical curves of various type's distance pieces by the results of model experiments. Now, if the launching velocity curve is given, we can select the optimum weight of the distance piece by the lifting critical curve when we know the setting position of ship. Subsequently, three ships which were taken the countermeasure used to this curve launched successfuly.
社団法人日本船舶海洋工学会の論文
1978-08-15