公开(公告)号：JP2002188405A

公开(公告)日：2002-07-05

申请号：JP2001360244

申请日：2001-11-27

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MONTGOMERY MATTHEW ,  BYRNE W KERRY ,  BLOCK RACHEL J ,  SILKOWSKI PETER D ,  SRINIVASAN SRIRAM

IPC: F01D5/10 ,  F01D5/16 ,  F01D5/26

Abstract: PROBLEM TO BE SOLVED: To provide an improved array of flow directing elements for a turbomachine, which provides a passive flutter control. SOLUTION: The row of flow guide elements includes a plurality of flow guide elements (10, 12) fixed on a rotor disc. A plurality of the flow directing elements (10, 12) include a first group of the first flow directing elements (10), that have been improved of the natural vibration by having a piece of material removed from a leading edge end region (22), and a second group of the second flow directing elements (12) that have the natural frequency improved by having a piece of material removed from a midspan leading edge region (24). Further, in this row are included unmodified flow directing elements disposed along with the improved flow directing elements.

公开(公告)号：DE60136151D1

公开(公告)日：2008-11-27

申请号：DE60136151

申请日：2001-11-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MONTGOMERY MATTHEW ,  BYRNE KERRY W ,  BLOCK RACHEL J ,  SILKOWSKI PETER D ,  SRINIVASAN SRIRAM

IPC: F01D5/16 ,  F01D5/10 ,  F01D5/26

Abstract: An array of flow directing elements comprises a plurality of flow directing elements 10, 12, 36 mounted to a rotor disk. The plurality of flow directing elements includes a first set of first flow directing elements 10 whose natural vibration frequency has been modified by having material removed from a leading edge tip region 22 and a second set of second flow directing elements 12 whose natural vibration frequency has been modified by having material removed from a midspan leading edge region 24. The array may further comprise unmodified flow directing elements 36 arranged with the modified flow directing elements 10, 12.