叶片截面型线参数的提取与计算方法研究  

Study on Extraction and Calculation Method of the Profile Parameters of Blade Section

作　　者：毕超 孙希婕 胡成海 王帼媛 BI Chao;SUN Xi-jie;HU Cheng-hai(AVIC Beijing Precision Engineering Institute for Aircraft Industry,Beijing 100076;China Airborne Missile Academy,Luoyang 471099)

机构地区：[1]航空工业北京航空精密机械研究所,北京100076 [2]中国空空导弹研究院,洛阳471099

出　　处：《航空精密制造技术》2022年第6期5-9,共5页Aviation Precision Manufacturing Technology

基　　金：专项工程资助项目(2006ZCGF0101)。

摘　　要：为了获取叶片截面型线的特征参数,基于参数化设计思想,对叶型参数的提取与计算方法进行了研究。首先,通过Ramer算法和Hough圆检测法将闭合的叶型曲线分割为4条轮廓段,拟合出前后缘圆弧的半径和圆心坐标,并进一步解算出弦角、弦线方程和弦长。对于中弧线和最大厚度,提出了一种基于叶盆叶背对应点之间距离的近似求解方法。最后,选取一组叶型数据点进行分析,评价结果显示:各项叶型参数的偏差均<10μm,从而验证了本文算法的有效性和精度水平。In order to derive the profile parameters of blade sections, the extraction and calculation algorithms based on the parametrization idea were studied. First, the closed blade curve was divided into four segments through the Ramer algorithm and Hough circle detection method. Then the radius and center coordinates of leading and trailing edges were fitted out, as well as the chord angle, chord function and chord length. As to the central arced curve and maximum thickness, an approximate solution method based on the distance between the corresponding points of pressure side and suction side was proposed. Finally, a set of profile data of blade section was selected to be analyzed. The evaluation result showed that the deviation of all the profile parameters between them was smaller than 10μm, which verified the effectiveness and accuracy level of the methods.

关 键 词：叶片截面 叶片检测 特征参数 前后缘 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程] TH72[机械工程—仪器科学与技术]