Stator assembly for a gas turbine engine

Abstract

A stator assembly comprises an annular platform () defining a boundary of an annulus and a plurality of guide vanes () for arranging in a circumferential array on the annular platform (). The platform () includes a circumferential array of slots each slot having, at a first end, walls converging () from an annulus facing side towards an opposite side of the platform and then extending parallel () towards a second end. One or more cooling holes () is arranged in a wall () of the slot. Each vane () includes a root portion () which converges in a first region () distal to the root end and then extends parallel towards the root end in a second region (). The root portion () is configured to engage in a slot of the platform () with the first region () abutting a convergent wall portion () of the slot and the second region () spaced from a parallel wall () of the slot. At least one bore () is provided in a parallel wall () of each slot and at least one bore () is also provided in the second region of the root portion (). The bores () in the two components are positioned to align when a vane () is engaged in a slot. The aligning bores () together are configured to receive a pin () for mechanically securing the vane in the slot. A braze joint () may be added between the root portion () and parallel slot walls