关键词: 飞机设计, 航空结构, 质量分布, 计算程序

Abstract: Aiming at the feature of porousness and cavity in aeronautic structures,an improved model-based computation model and algorithm were introduced.Compared with the former algorithm,the factor of holes and cavities were added in new model,in which the effects of holes and cavities on the mass distribution of structure were considered.The new model solved the problems of calculating point's big error existed in former algorithm,and the corresponding calculation procedure was written.Numerical example showed that the improved algorithm could reflect the mass distribution of wing-like structure with a higher precision.

Key words: aircraft design, aerospace structures, mass distribution, calculation procedures