The invention relates to a marine propeller rotor blade root rounding integral forming accurate configuration method, which comprises the following steps of: drawing contour lines of maximum thickness of airfoils with different radiuses of a marine propeller rotor, creating rounding boundary lines, and measuring to obtain the continuation distance of the rounding boundary line on each radius relative to the contour line with the maximum thickness; a tangent line is made at any point on the original airfoil profile, a vertical line which is perpendicular to the tangent line and extends outwards is made, a new point is taken at the position, with the distance d from the tangent point, on the vertical line, and the newly-taken point is the point, containing the rounding boundary, on the new airfoil profile; repeating the process from the leading edge to the following edge of the original airfoil profile to obtain a new airfoil profile containing the rounding boundary; and blade three-dimensional reconstruction. The problems that transition between the blade root and the propeller hub of the marine propeller rotor is not smooth enough, and the rounding configuration of the blade root is difficult to be accurate are solved, accurate definition of the rounding surface of the blade root can be achieved, rounding and the curved surface of the blade can be integrated, smooth transition is achieved, and the stress concentration situation can be reduced.
本发明涉及一种船用推进器转子叶根倒圆一体成型精确构型方法,包括以下步骤:绘制船用推进器转子不同半径翼型最大厚度的轮廓线,创建倒圆边界线,测量得到每个半径上倒圆边界线相对于最大厚度轮廓线的延拓距离;在原始翼型上任意一点做切线并做垂直于该切线的向外延伸的垂线,在垂线上距离切点距离为d的位置取新点,新取的点就是包含了倒圆边界的新翼型上的点;对原始翼型从导边至随边重复以上过程,得到新的包含了倒圆边界的翼型;叶片三维重构。船用推进器转子叶根与桨毂的过渡不够光顺、叶根倒圆的构型难以精确的问题,能够实现对于叶根倒圆型表面的精确定义,并且倒圆和叶片曲面能够自称一体,实现光顺的过渡,可减小应力集中情况的发生。
Marine propeller rotor blade root rounding integral forming accurate configuration method
一种船用推进器转子叶根倒圆一体成型精确构型方法
2024-01-16
Patent
Elektronische Ressource
Chinesisch