【摘要】 用Ｂｅｚｉｅｒ和Ｂ样条两种方法实现了对曲面外形的描述，对两种描述方法的优缺点进行了对比。实现了与大型设计和分析综合软件的外形数据接口。算例采用了某型飞机外形数据，计算结果表明，采用计算机辅助设计的方法，可提高演算的精度，并可大大提高计算工作的效率。更多还原

【Abstract】 In this paper, the advantages and disadvantages of the two methods are discussed. The method of reading data from famous CAD software is given. The calculating example is presented according to the surface data of an aircraft. It is shown by the results that the precision and the efficiency of calculation are improved remarkably by using CAD method.更多还原