Patent ID: 7669420

Claim:
A fuel injector for a gas turbine engine, having: a prefilmer having a first surface and a second surface, the first surface and the second surface being separated by an annular swirl slot for the supply of fuel to the second surface; wherein the first surface has an annular lip that forms a first edge of the swirl slot and the second surface has an annular lip that forms a second edge of the swirl slot, and the first edge and the second edge are eccentric to each other such that, in use, a flow of fluid over the prefilmer creates a static pressure within the swirl slot that varies over the length of the swirl slot; and wherein the prefilmer extends about an injector axis and the first edge of the swirl slot and the second edge of the swirl slot each extend about a respective but different axis, and at least one of the respective axes is parallel to but not coaxial with, the injector axis.