Patent ID: 6527503
Filing Date: 2003-03-04
Classification: F01D,Y02T

Abstract:
A method of positioning arrays of stages (4, 5) of a turbine (1), particularly for aircraft engines, the turbine (1) having an axis (2) and comprising a first (9), a second (10) and a third (11) array arranged consecutively and comprising a number of first (12), second (13) and third (14) blades respectively; said first and said third array (9)(11) having a relative velocity about said axis (2) with respect to said second array (10); the method comprising the step of determining the paths of wakes (27) moving inside gaps (16) defined by said number of second blades (13) and towards said third array (11), and the step of regulating the position of said third array (11) with respect to said first array (9) as a function of said wakes (27); and being characterized by also comprising the steps of distinguishing, for each said wake (27), a first (31) and at least one second (32) zone differing from each other, and of selecting one (32) of said first and said second zone (31)(32); the position of said third array (11) being regulated by aligning the leading edges (21) of said number of third blades (14) with the paths of the selected wake zones (32).