Keilförmige Befestigung von Leitschaufeln im äusseren Schaufelkranz mit variabler Teilung

摘要

A method for repairing or replacing a mechanically retained vane is provided. The method comprises the steps of forming an oversized cavity (50) in an outer base (52), inserting a flared end (18) of a vane in the oversized cavity (50), and inserting a wedge (70) for mechanically retaining the flared end (18) of the vane in the oversized cavity (50). The wedge (70) has a first surface (72) with a constant pitch angle to match the outer base cavity (50) and a second surface (74) with a variable pitch angle to match the vane tip dovetail.