Patent ID: 11920793
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 18:
19. A method of calibrating a gas turbine engine combustor having a plurality of fuel injectors, the method comprising:
providing a plurality of fuel injectors that includes at least one adjustable fuel injector, the adjustable fuel injector including:
a swirler having a shaft, a collar, a throat section, a first axial end, and a second axial end, wherein the shaft extends from the first axial end to the collar and includes an inner bore extending through the shaft, and the throat section includes an inner radial surface that defines a central passage that extends between the inner bore of the shaft and the collar, and the collar includes a plurality of apertures extending therethrough disposed radially outside of the central passage, wherein said apertures are located downstream of the throat section;
a mounting stage disposed in the inner bore, the mounting stage having an annular flange, a central hub, and at least one strut extending radially between the annular flange and the central hub; and
a distributor having a stem attached to a head, the stem having a distal end opposite the head portion engaged with the central hub, wherein the head portion has an end surface and a side surface that extends between the end surface and the stem, and wherein the head has a diameter that decreases in a direction from the end surface to the stem;
wherein the distributor is selectively positionable relative to the throat section;

adjusting the at least one adjustable fuel injector (AFI) by positioning the distributor relative to the throat section of the adjustable fuel injector to produce an AFI fuel flow distribution that substantially matches a fuel flow distribution of each of the other of the fuel injectors of the plurality of fuel injectors.