【摘要】 研究通风机叶轮的直线型叶片与单圆弧前盘的交线，并推导出了相关的交线方程，利用此方程就可以直接计算出直线型叶片的展开图及其面积、质量、重心位置等参数。最后作了实际运算，计算结果与实物一致。更多还原

【Abstract】 The interaction of a single-arc-shaped covering disk with a straight blade for the shroud-ed impeller of a fan is discussed and the relevant equation is derived.The developed planform of the blade and the area,mass and the position of the gravity center can be found di-rectly by the equation,Calculation results are in good agreement with those of the full-scaleimpeller.更多还原