公开(公告)号：US6164912A

公开(公告)日：2000-12-26

申请号：US217697

申请日：1998-12-21

申请人： Martin G. Tabbita ,  James P. Downs ,  Friedrich O. Soechting ,  Thomas A. Auxier ,  Frederick Steinbauer, Jr.

发明人： Martin G. Tabbita ,  James P. Downs ,  Friedrich O. Soechting ,  Thomas A. Auxier ,  Frederick Steinbauer, Jr.

IPC分类号： F02C7/00 ,  F01D5/18

CPC分类号： F01D5/186 ,  F01D5/187 ,  F05D2240/121 ,  F05D2240/303 ,  F05D2250/25

摘要： A hollow airfoil is provided which includes a body having an external wall and an internal cavity. The external wall includes a suction side portion and a pressure side portion. The portions extend chordwise between a leading edge and a trailing edge and spanwise between an inner radial surface and an outer radial surface. A stagnation line extends along the leading edge. A plurality of cooling apertures, disposed spanwise along the leading edge. According to one aspect of the present invention, the apertures extend through the external wall along a helical path. According to another aspect of the present invention, the apertures are alternately directed towards the suction side portion and the pressure side portions of the airfoil.

摘要翻译： 提供了一种空心翼片，其包括具有外壁和内腔的主体。 外壁包括吸力侧部分和压力侧部分。 这些部分在前缘和后缘之间并行延伸，并且在内径向表面和外径向表面之间展开。 停滞线沿着前缘延伸。 沿着前缘沿翼展方向设置的多个冷却孔。 根据本发明的一个方面，孔径沿着螺旋路径延伸穿过外壁。 根据本发明的另一方面，所述孔交替地指向翼型的吸入侧部分和压力侧部分。