【摘要】 根据对随船引进的大型远洋单船拖网网板的调查、测绘和分析，选择了5种结构上具有代表性的网板，进行网板模型风洞试验。通过对风洞试验结果的分析，筛选出缝翼式大展弦比网板作为选型设计的基础，设计制作了3付实物网板，经生产使用证明，该型网板具有扩张效果好，冲角范围大，曳行稳定和抗弯曲性强的特点。更多还原

【Abstract】 Five model trawl doors were tested through the aerodynamic tunnel based on the analyses, survey and drawing. After analysing the results of the aerodynamic tunnel test, we selected the trawl door with a slot as the base of our design. The trawl doors with surface area of 10,7.5 and 7m2 that were designed by using the aerodynamic tunnel, manufactured and used.The trawl doors of such structure have proved to be highly effective in spreading, large ill the range of attack angle, stable in performance and resistant to bending.更多还原