公开(公告)号：US08028636B2

公开(公告)日：2011-10-04

申请号：US12310232

申请日：2008-01-30

申请人： Reiko Takashima ,  Makoto Nishigaki ,  Toshinobu Sakamoto ,  Naoki Ueda ,  Kenichi Yamamoto

发明人： Reiko Takashima ,  Makoto Nishigaki ,  Toshinobu Sakamoto ,  Naoki Ueda ,  Kenichi Yamamoto

IPC分类号： B63B1/08

CPC分类号： B63H5/16 ,  B63B1/08 ,  B63B1/32 ,  B63B2001/325 ,  Y02T70/12 ,  Y02T70/127 ,  Y02T70/128

摘要： A stern shape of a displacement-type marine vessel enables reduction of the hull resistance and prevents propeller cavitation. The displacement-type marine vessel which travels in a velocity range in which the Froude number is smaller than the last hump and the stern includes knuckle lines connecting knuckle points provided on the surface of the hull, from a starting point in front of a propeller to an end point behind the propeller. A portion of the stern located inside the knuckle line in the direction of the width of the hull has a dome shape with upward curvature, and the length of the portion which has the dome shape is set to 10% or more of the entire hull length or at least the diameter of the propeller.

摘要翻译： 位移式船舶的船尾形状能够降低船体阻力并防止螺旋桨气蚀。 在弗劳德数小于最后一个驼峰的速度范围内行进的位移型海洋船只和船尾包括连接在船体表面上的转向节点的转向节，从螺旋桨前面的起点到 螺旋桨后面的终点。 位于转向节线内侧的船尾部分在船体宽度方向上具有向上弯曲的圆顶形状，并且具有圆顶形状的部分的长度设定为整个船体长度的10％以上 或至少螺旋桨的直径。

公开(公告)号：US20090320731A1

公开(公告)日：2009-12-31

申请号：US12310232

申请日：2008-01-30

申请人： Reiko Takashima ,  Makoto Nishigaki ,  Toshinobu Sakamoto ,  Naoki Ueda ,  Kenichi Yamamoto

发明人： Reiko Takashima ,  Makoto Nishigaki ,  Toshinobu Sakamoto ,  Naoki Ueda ,  Kenichi Yamamoto

IPC分类号： B63B1/08

CPC分类号： B63H5/16 ,  B63B1/08 ,  B63B1/32 ,  B63B2001/325 ,  Y02T70/12 ,  Y02T70/127 ,  Y02T70/128

摘要： In a displacement-type marine vessel which travels in a velocity range where the Froude number is smaller than the last hump, a stern shape includes knuckle lines connecting knuckle points, provided on the surface of the cross sections of the hull at the stern, continuously from a starting point in front of a propeller to an end point behind the propeller in the fore-and-aft direction of the hull, and a frame line located inside the knuckle line in the width direction of the hull which has a dome shape with upward curvature, the length of the hull portion which has the dome shape is 10% or more of the entire hull length or at least the diameter of the propeller, and the position of the starting point in the width direction of the hull is outside the position of the radius of the propeller.

摘要翻译： 在弗劳德数小于最后一个驼峰的速度范围内行进的位移型船舶中，船尾形状包括连接转向节点的转向节线，转向节连接在船尾的船体横截面的表面上，连续地 从螺旋桨前方的起点到船体前后方向上的螺旋桨后方的终点，以及位于船体宽度方向的转向节线内侧的框架线，其具有圆顶形状， 具有圆顶形状的船体部分的长度为整个船体长度或至少螺旋桨直径的10％以上，船体宽度方向上的起点位置在 螺旋桨半径的位置。