公开(公告)号：US07988420B2

公开(公告)日：2011-08-02

申请号：US11882531

申请日：2007-08-02

申请人： Brian Peter Arness ,  Tony A Chiurato ,  Sze Bun Brian Chan ,  Bogdan Razvan Raica ,  Samar Barua ,  Jacob Charles Perry, II

发明人： Brian Peter Arness ,  Tony A Chiurato ,  Sze Bun Brian Chan ,  Bogdan Razvan Raica ,  Samar Barua ,  Jacob Charles Perry, II

IPC分类号： B64C27/46 ,  B64C27/473 ,  F01D5/14

CPC分类号： F01D5/141 ,  F01D5/142 ,  F05D2250/74 ,  Y02T50/673 ,  Y10S416/02

摘要： Third stage turbine buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z′ set forth Table I wherein X and Y values are in inches and the Z′ values are non-dimensional values from 0 to 1 convertible to Z distances in inches by multiplying the Z′ values by the height of the airfoil in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape. The X, Y and Z distances may be scalable as a function of the same constant or number to provide a scaled up or scaled down airfoil section for the bucket. The nominal airfoil given by the X, Y and Z distances lies within an envelope of +/−.0.040 inches in directions normal to the surface of the airfoil.

摘要翻译： 第三级涡轮机叶片具有基本上按照X表示的X，Y和Z'的笛卡尔坐标值的翼型，其中X和Y值以英寸计，Z'值是从0到1可转换为Z的无量纲值 通过将Z'值乘以翼型件的高度（英寸），以英寸为单位。 X和Y值是通过平滑连续弧连接时定义每个距离Z处的翼型轮廓部分的距离。每个距离Z处的轮廓部分彼此平滑地连接以形成完整的翼型形状。 X，Y和Z距离可以作为相同常数或数字的函数来缩放，以提供用于铲斗的放大或缩小的翼型部分。 由X，Y和Z距离给出的额定翼型位于垂直于翼面表面方向的+/- 0.040英寸的包络内。