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1. 发明授权

US4448144A Method for opening, closing and rotating rigid marine sail 失效
标题翻译：打开，关闭和旋转刚性海洋帆船的方法
公开(公告)号：US4448144A
公开(公告)日：1984-05-15
申请号：US281164
申请日：1981-07-07
申请人： Akira Senoo , Yuzo Nezu , Masanori Ito , Hironobu Nagano , Tatsuo Aire
发明人： Akira Senoo , Yuzo Nezu , Masanori Ito , Hironobu Nagano , Tatsuo Aire
IPC分类号： B63B49/00 , B63H9/04 , B63H9/06 , G05B7/02
CPC分类号： B63B49/00 , B63H9/0607
摘要： A method for opening, closing and rotating a rigid marine sail, which comprises the steps of: selectively opening, closing and rotating, in response to a wind velocity and a wind direction, a rigid sail comprising at least two sail portions which are fitted in front of a mast rotatable around the vertical axis thereof substantially in parallel with said axis, and which are selectively pivotably movable between the opened position and the closed position relative to the mast: the method being characterized by: smoothing a plurality of wind velocity signals and a plurality of wind direction signals from a wind velocity/wind direction meter, by a calculating device at prescribed intervals of time; determining opening and closing of the at least two sail portions by the calculating device on the basis of smoothed wind velocity signals and smoothed wind direction signals; automatically selectively opening or closing the at least two sail portions by an opening/closing device in response to the determination; determining by the calculating device an optimum sail angle relative to the horizontal reference line of the ship, the optimum sail angle providing the maximum propulsion to the at least two sail portions when the sail portions are opened, and minimizing the wind resistance acting on the at least two sail portions when the sail portions are closed; and, selectively rotating the mast together with the at least two sail portions, by a mast rotating mechanism, in response to the deviation of an actual sail angle relative to the horizontal reference line of the ship from the optimum sail angle, thereby always keeping the at least two sail portions at the optimum sail angle.
摘要翻译：一种用于打开，关闭和旋转刚性海洋帆的方法，其包括以下步骤：响应于风速和风向选择性地打开，关闭和旋转;刚性帆，包括至少两个帆形部分，其装配在所述桅杆的前部可绕其垂直轴线大致平行于所述轴线旋转，并且其可相对于所述桅杆在打开位置和关闭位置之间选择性地可枢转地移动。所述方法的特征在于：平滑多个风速信号和来自风速/风向计的多个风向信号通过计算装置以规定的时间间隔; 基于平滑的风速信号和平滑的风向信号，通过计算装置确定至少两个帆部分的打开和关闭; 响应于所述确定，通过打开/关闭装置自动选择性地打开或关闭所述至少两个帆部; 由所述计算装置确定相对于所述船的水平参考线的最佳帆角，所述最佳帆角在所述部分打开时向所述至少两个帆形部分提供最大推进力，并且最小化作用在所述船上的所述风阻力当帆部分关闭时，至少两个帆部分; 并且响应于相对于最佳帆角相对于船舶的水平参考线的实际帆角的偏差，通过桅杆旋转机构选择性地将桅杆与至少两个帆部分一起旋转，从而始终保持至少两个帆部分处于最佳帆角。

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