公开(公告)号：SG11201404464YA

公开(公告)日：2014-10-30

申请号：SG11201404464Y

申请日：2013-02-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BILLINGS SCOTT C ,  WU ZHEN ,  GIANNAKOPOULOS KONSTANTINOS P

IPC: F02C7/00 ,  F01D25/00 ,  F01D25/04 ,  F16F15/28

Abstract: A turbine rotor balancing system comprises a circumferential array of mounting features. One or more balance weights are each mounted to the respective associated said mounting feature. Each balance weight comprises: a front wall along the forward face of the mounting feature; an aft wall along the aft face of the mounting feature; and a radially inboard wall. One or more fasteners each extend at least partially through holes of the front wall and rear wall of an associated said balance weight and through a hole of the associated said mounting feature. An abutment surface of the rotor is positioned to engage an outboard end of at least one of the front wall and aft wall of each said balance weight to resist outward radial movement of the weight.

公开(公告)号：EP3126638A4

公开(公告)日：2017-04-12

申请号：EP15774355

申请日：2015-03-30

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BILLINGS SCOTT C ,  GOTTSCHALK MICHAEL K ,  OWEN WILLIAM D ,  GALLAGHER EDWARD J ,  WHITLOW DARRYL ,  CHUANG SUE-LI ,  SADEGHI MANI

IPC: F01D5/14

CPC classification number: F04D29/384 ,  F01D5/141 ,  F02C3/04 ,  F02C7/36 ,  F02K3/06 ,  F05D2220/36 ,  F05D2240/35 ,  F05D2250/70 ,  Y02T50/672 ,  Y02T50/673

Abstract: In one exemplary embodiment, an airfoil for a turbine engine includes an airfoil that has pressure and suction sides and extends in a radial direction from a 0% span position at an inner flow path location to a 100% span position at an airfoil tip. The airfoil has a curve that corresponds to a relationship between a leading edge dihedral and a span position. The leading edge dihedral has a portion of the curve with a change in dihedral in the range of 90% to 100% span position of greater than 10°. A positive dihedral corresponds to suction side-leaning. A negative dihedral corresponds to pressure side-leaning.

公开(公告)号：EP2825746A4

公开(公告)日：2015-10-28

申请号：EP13761712

申请日：2013-02-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BILLINGS SCOTT C ,  WU ZHEN ,  GIANNAKOPOULOS KONSTANTINOS P

IPC: F01D5/02 ,  F01D25/04 ,  F04D29/66 ,  F16F15/34 ,  G01M1/30

CPC classification number: F01D5/027 ,  F04D29/662 ,  F05D2260/15 ,  F16F15/34

Abstract: A turbine rotor balancing system comprises a circumferential array of mounting features. One or more balance weights are each mounted to the respective associated said mounting feature. Each balance weight comprises: a front wall along the forward face of the mounting feature; an aft wall along the aft face of the mounting feature; and a radially inboard wall. One or more fasteners each extend at least partially through holes of the front wall and rear wall of an associated said balance weight and through a hole of the associated said mounting feature. An abutment surface of the rotor is positioned to engage an outboard end of at least one of the front wall and aft wall of each said balance weight to resist outward radial movement of the weight.