气动烧蚀物体表面粗糙度处理方法的研究

STUDY ON THE PROCESSING METHOD FOR MICROROUGHNESS OF AN AERODYNAMIC ABLATED SHAPE

本文系统地阐述了度量烧蚀表面粗糙度的各种量的定义和计算方法,并讨论了它们的一些优点与不足。为了更精确地反映出烧蚀表面的轮廓曲线和粗糙程度,本文探讨了用谱分析的方法研究这种粗糙度的可能性。并通过几种典型波形的频谱分析证明了在谱空间里作粗糙度的分析能给出更可靠、更精确的结果。烧蚀表面粗糙度的度量是随航天技术发展而产生的新课题,本文的工作对它的研究作出了初步的有价值的探索。

In this paper the definitions of various parameters andtheir computational methods which are used to measure microroughnessof an aerodynamic ablated shape were proposed systematically and theiradvantages and disadvantages were discussed.In order to describe theablated shape and its microroughness more accurately,feasibility wasinvestigated for study of the microroughness by the spectrum method.Bymeans of analysis of several typical waves,it was proved that in spec-trum space more accurate and more reliable results of microroughnesscan be obtained by the spectrum method.The measurement of the micro-roughness of ablated shapes is a new project that appears with develo-pment of aviation and space technology,and work that was done in thepaper is primary and valuable research for it.