滚转对旋成体的菱形花纹的影响

THE INFLUENCE OF ROLL ON CROSS HATCHING OF REVOLUTION BODIES

这篇文章给出了滚转对旋成体的菱形花纹的影响。给出了任意形状旋成体滚转时的菱形花纹歪扭轨迹的计算公式。给出了三种物面形状的物体的ｎ（ｘ）计算公式：（１）锥（２）母线由直线和圆弧组成的尖头旋成体（３）球头锥。给出了参数ｋ＝０．０２５－０．５滚转圆锥的菱形花纹轨迹的空间图。计算了４种来流条件下的滚转尖头旋成体的菱形花纹轨迹。计算了３组模型和不同来流条件下滚转球头锥的菱形花纹轨迹。

The influence of roll on cross hatching of revolution bodies is studied in this paper Calculation formulae of crooked locus of cross hatching of revolution body of arbitrary form is presented Calculation formulae of surface crooked distance n for bodies of three forms are given:(1) cone,(2)tip nosed revolution body whose genrators consist of straight lines and circular arcs,(3)sphere nosed cone Space figure of loci of cross hatching of cone are shown when a parameter k defined in the paper is in the range 0 025 0 5 Also shown are loci of cross hatching of tip nosed revolution bodies under four kinds of free stream conditions Locus of cross hatching of three kinds of sphere nosed cones is calculated,when free stream is different The calculation results are given with analyses and comparisons