Patent ID: 8511091
Filing Date: 2013-08-20
Classification: F23D,F23R,Y10T

Abstract:
1. A swirler arrangement for a fuel injector of a gas turbine engine, the swirler arrangement comprising: a plurality of passages for channeling airflow through the swirler arrangement and into a combustor, each of the passages having an inlet, and a plug movable between a first position and a second position, wherein at the first position the inlet to a first passage of said plurality of passages is open and the inlet to a second passage of said plurality of passages is closed, and at the second position the inlet to the second passage of said plurality of passages is open and the inlet to the first passage of the plurality of passages is closed, the swirler arrangement has a pressurisable chamber for receiving a fluid, the pressure of the fluid in the chamber in use providing motive force to move the plug between the first and second position, and the first passage of the plurality of passages is for channeling said airflow such that on exiting said first passage said airflow has a first exit swirl angle and a first direction of rotation relative to a swirl axis, and the second passage of the plurality of passages is for channeling said airflow such that on exiting said second passage said airflow has a second exit swirl angle and a second direction of rotation relative to said swirl axis.