公开(公告)号：US20180298912A1

公开(公告)日：2018-10-18

申请号：US15634244

申请日：2017-06-27

申请人： ROLLS-ROYCE plc

发明人： Christopher R. HALL ,  Anastasios KOVANIS ,  Anthony M. DICKENS ,  James V. TAYLOR

IPC分类号： F04D29/32 ,  F04D29/54 ,  F04D29/38

摘要： This disclosure concerns aerofoils for an axial flow compressor. The compressor has an array of aerofoils angularly spaced about its axis of rotation. The aerofoils have leading and trailing edges extending in a direction spanning a flow region defined between a radially inner rotor component and a radially outer casing. Each aerofoil has opposing pressure and suction surfaces extending between the leading and trailing edges and terminating at a free end of the aerofoil. Each aerofoil leans towards the pressure surface by an angle of between 10° and 80° in the vicinity of the aerofoil tip. The aggressive negative lean towards the tip may help reduce over-tip leakage flow in use.