CAJ | 학술논문

从理论上分析了抛物线、单圆弧和双圆弧型翼型中心线方程,推导并更正了双圆弧中心线翼型的前、后缘方向角的取值规律. 阐述了翼型叶片截面的参数化建模方法,利用微分的思想,通过中心线分割点的弧长值求得了对应横坐标,从而获得了更加精确的翼型叶片上、下轮廓控制点坐标参数化计算方法. 在此基础上,开发了翼型叶片截面参数化绘图程序,实现了叶型截面的精确自动绘制.
종이론상분석료포물선、단원호화쌍원호형익형중심선방정,추도병경정료쌍원호중심선익형적전、후연방향각적취치규률. 천술료익형협편절면적삼수화건모방법,이용미분적사상,통과중심선분할점적호장치구득료대응횡좌표,종이획득료경가정학적익형협편상、하륜곽공제점좌표삼수화계산방법. 재차기출상,개발료익형협편절면삼수화회도정서,실현료협형절면적정학자동회제.
The centerline equations of parabolic,single arc and double circular arc airfoil were analyzed theoretically.Leading edge direction angle and trailing edge direction angel value low of double circular arc airfoil was derived and corrected.The para-metric modeling method of aerofoil blade section was described.The abscissa of centerline segmentation point was obtained through arc length based on differential idea, thus a more accurate parametric calculation method of control point coordinates which determining the contour of airfoil blade was obtained.A parametric drawing program of aerofoil blade section which could realize the blade section automatic drawing accurately was developed based on this method.