Patent ID: 6579061
Filing Date: 2003-06-17
Classification: F01D,F05D,Y02T,Y10T

Abstract:
A turbine nozzle comprising:a row of nozzle segments each including a pair of vanes mounted at opposite ends to outer and inner bands; each of said vanes having axially opposite leading and trailing edges and circumferentially opposite pressure and suction sides extending radially between said opposite ends; each of said bands having circumferentially opposite first and second ends adjoining at respective splitlines therebetween; each of said band ends having a forward land extending along said splitline near said vane leading edge, an aft land extending along said splitline near said vane trailing edge, and a middle land extending along said splitline over an intermediate portion of said vane between said forward and aft lands to collectively form flowpath surfaces bounding combustion gas flow between said vanes; and said forward lands at said splitlines having a nominal aft-facing step, said aft lands at said splitlines having a nominal forward-facing step and said middle lands being nominally flush.