Methods of forming fan-shaped effusion holes in combustors

摘要

Methods are provided of forming a plurality of fan-shaped effusion holes (106, 702, 704) on a combustor (100, 602) having a surface (104), each hole (106, 702, 704) having an outlet (122) on the combustor surface (104). The method may include rotating (504) the combustor relative to a laser beam, and positioning the combustor to a first position where the laser beam (610) is at a first predetermined angle relative to the combustor surface (104).The laser beam is pulsed (506) at the combustor surface to form a first plurality of trepan cuts. The first predetermined angle is adjusted (508) to a second position where the laser beam (610) is at a second predetermined angle relative to the combustor surface. The laser beam (610) is pulsed (510) at each trepan cut of the first plurality of trepan cuts, to thereby form a cut for at least a portion of the fan shape of each effusion hole outlet (122), wherein each cut overlaps a trepan cut of the first plurality of trepan cuts.