公开(公告)号：US20140245741A1

公开(公告)日：2014-09-04

申请号：US14192363

申请日：2014-02-27

Applicant: ROLLS-ROYCE PLC

Inventor： Li HE ,  Amir RAHIM ,  Bidur KHANAL ,  Eduardo ROMERO

IPC: F01D9/04

CPC classification number: F01D9/041 ,  F01D5/141 ,  F01D5/145 ,  F01D5/146 ,  F05D2250/38 ,  F05D2250/73

Abstract: In a gas turbine engine, each vane has pressure and suction surfaces extending radially from an inner to outer endwall of an annular working gas engine passage, and extending axially from a leading to a trailing edge of the vane. Each vane has transverse sections providing respective aerofoil sections. Neighbouring vanes are arranged in unequally-shaped pairs in which either: (i) the first vane of each pair exhibits compound lean, and the second vane of the pair exhibits reverse compound lean or has substantially no tangential lean, (ii) the first vane of each pair has substantially no tangential lean, and the second vane of the pair exhibits reverse compound lean, or (iii) the first vane of each pair exhibits reverse compound lean, and the second vane of the pair exhibits greater reverse compound lean. Within each unequally-shaped pair the first vane is on the pressure surface side of the second vane.

Abstract translation: 在燃气涡轮发动机中，每个叶片具有从环形工作燃气发动机通道的内壁到外端壁的径向延伸的压力和吸力表面，并从叶片的导向到后缘轴向延伸。 每个叶片具有提供相应机翼部分的横截面。 相邻叶片布置成不均匀的对，其中：（i）每对的第一叶片表现出复合稀薄，并且该对的第二叶片表现出相反的复合物倾斜或基本上没有切向倾斜，（ii）第一叶片 每对的基本上没有切向倾斜，并且该对的第二叶片显示相反的复合稀薄，或（iii）每对的第一叶片表现出相反的复合稀薄，并且该对的第二叶片显示更大的反向化合物浓度。 在每个不相等的对中，第一叶片在第二叶片的压力表面侧上。