摘要
在假设手纲、空纲成直线状，浮纲、沉纲呈悬链线状的前提下，利用悬链线各因素与手纲冲角之间的相互制约关系，确立了计算单船底拖网作业手纲冲角近似值的逐步校正法。并推广应用于双船底拖网作业中的曳纲水平冲角、空纲的水平冲角、上袖端的内倾率、上片网衣在沉纲前上方的遮盖面积以及遮盖率等的近似值计算。
Supposed sweep line and leg exists linearly,float line and lead line keep suspending chain,a step-by-step approximate calculation of sweep line angle has been establishedfor single-boat bottom trawl in this article by making use of the relationship between suspending chain factors and sweep line angle.It has also been applied in the calculation of warphorizonal angle,interior angle of upper wing,covered area before lead line,and its percentagein two-boat bottom trawl.
关键词
手纲冲角
悬链线
内倾率
遮盖率
拖网捕鱼
Single-boat bottom teawl
Sweep line angle
Approximate calculation
A step-by-step calculation
