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1·The experiments and calculation indicate that the common Stokes formula is only suitable to the situation with small grain settling Reynold number.

实验及计算表明：常用的斯托克斯公式仅适应于颗粒沉降雷诺数较小的情况；

2·The paper introduces aerodynamic configuration optimization design of lower Reynold number aeroplane using genetic algorithm, and makes prototypes to test feasibility and correctness of design.

试验结果表明该优化设计方法是十分有效的，可以用来对具有正常布局形式的飞机进行气动外形的优化设计。