中文摘要：

基于非均匀有理B样条（NURBS）曲线组合算法，将自由曲线与解析曲线进行组合，构造了刚性充气式滑行艇的横剖面曲线，对复杂横剖面特征对应节点进行了特征提取及优化，采用改进蒙皮法生成光顺曲面，准确地构造了这种具有折角线和舷侧气囊的滑行艇型，为构造曲面复杂的船型提供了一种良好的解决方案和思路。通过对充气式刚性滑行艇曲面特征进行准确构造，可为船体曲面面元的自动划分、船舶CAD／CAM表面板格划分、静力学计算和CFD结构化计算网格生成等提供技术支撑。

英文摘要：

The section curves of rigid inflatable planning boat are constructed by free curves and analytic curves based on NURBS curves combination algorithm. The feature extraction and optimization have been Xaunched in the characteristics of the complex section points and improved skinning has also been applied in smoothing surface to precisely construct the planning hull form with knuckle line and broadside airbag. The above methods provide a good solution for constructing complex hull surfaces. It can be a great technical support for automatic partition of hull surface bin, surface block dividing by using CAD/CAM, statics calculation and the generation of constructed mesh in CFD.