TANDEM BLADE CASCADE,申请号JP19960227763-传众专利搜索

TANDEM BLADE CASCADE

申请公布号：JPH1054301(A)

申请号：JP19960227763

申请日期：1996.08.09

申请公布日期：1998.02.24

申请人：

KAWASAKI HEAVY IND LTD

发明人：HASHIMOTO KEISUKE

分类号：F01D5/14;F01D9/04;F02K3/04

主分类号：F01D5/14

摘要：PROBLEM TO BE SOLVED: To suppress a bad influence to a minimum limit of a shock wave generated between blade cascades so as to make a preposition blade of a tandem blade function as a boundary layer control blade of an after position blade. SOLUTION: In this tandem blade cascade, inevitable generation of a shock wave S in a high pressure ratio cascade is displaced as much as possible to an upper surface rear part of a preposition blade 2, so as to suppress separation from a blade surface caused by interference between the shock wave S and a boundary layer. A speed, momentum, etc., of a jet stream, blown up to an upper surface of an outlet blade 3 from a lower surface rear edge of the preposition blade 2, are adjusted, so that the jet stream flows along an upper surface of the outlet blade 3, boundary layer control is perfromed by limiting separation of the boundary layer in an upper surface of the outlet blade 3 to in the vicinity of a rear edge.