空泡对地效翼船支柱式水橇性能的影响

本文在减压水池中水橇的常压与减压拖曳试验结果基础上,研究了相关运动参数(速度、水橇浸深和水橇姿态角)以及支柱形式对地效翼船支柱式水橇空泡性能的影响,得出了有关规律性结论,为大型地效翼船水橇实用化设计与使用提供了有益的参考.     

地效翼船自控参数的优化研究

介绍了基于地效翼船空间运动方程的自控参数优化方法.首先建立了带有自控参数的地效翼船空间运动方程;再以MATLAB为工作平台,利用其非线性多目标函数fmincon(),建立优化系统的数学模型;最后采用MATLAB/GUIDE编制了自控参数优化程序,对地效翼船自控参数进行了优化计算.结果表明:通过地效翼船自控参数的优化计算,可以达到规定的运动性能指标,不必单纯依靠气动设计来解决地效翼船的运动稳定性和操纵性问题.     

中国船舶科学研究中心关于船舶性能新技术的研究进展

阐述了船舶性能新技术的重要性，并从原理、特点、功能、构成、应用效果诸方面较为详尽地介绍了中国船舶科学研究中心在船舶性能新技术领域的自主创新的若干成果，其中包括船型和性能数据库、船舶水动力性能集成设计系统、螺旋桨设计软件包、计算流体力学技术、掠海地效翼船、小水线面双体船、水翼船等七项研发成果。     

Aeronumeric optimal design of a wing-in-ground-effect craft

An optimization technique was used to generate a wing-in-ground-effect (WIG) configuration which can achieve the maximum lift and satisfy the height stability criteria within the design constraints. For the analysis of the aerodynamic coefficients, the vortex lattice method (VLM) was applied with the inviscid and potential flow approximations. The sequential quadratic programming (SQP) method, which is a nonlinear optimization method, was employed as an optimization tool. The lift and moment coefficients, including the stability analysis computed by VLM, were compared with the experimental results of a medium-sized WIG, and a good correlation was found between them. In addition, the optimization tool was validated by finding the optimal position of the side wing attached on the WIG craft. Then, various optimum examples are shown, with generation of the wing section, the determination of the planform configuration, the aspect ratio, and the position of the tail wing within the design constraints. It was shown that the present optimization tool can be used effectively for the optimal design of a WIG craft.     

地效翼艇三维组合翼气动特性计算分析

地效翼布局和翼型选择在很大程度上决定地效翼艇的性能和效能,对地效翼艇的设计至关重要。文章根据地效翼布局和翼型的特点,采用基于升力面理论的镜像法计算三维组合地效翼和简单地效翼在地效区和超出地效区的纵向气动特性参数,分析布局型式和外形参数对地效翼气动特性的影响。得到的组合翼在地效区内外比简单地效翼具有更好的升阻特性的结果,表明组合翼布局适合于掠海高飞型地效翼艇,研究也为地效翼布局型式、外形参数选择以及吹风模型制作提供了依据。     

《避碰规则》中“地效船”条款探讨

通过对《避碰规则》中“地效船”相关条款的研究和探讨,提出和明确“地效船”与其他船舶相遇时的避让责任,并对《避碰规则》提出修改建议。