A swirler (50;80) for a gas turbine engine fuel injector, said swirler (50;80) comprising: a frustoconical swirler body extending from an upstream end to a downstream end, a fuel injector extending into the body, and having a downstream end for injecting fuel in a downstream direction; a first flow path for directing air in a first circumferential direction about a central axis of the swirler body; and a second flow path (54;82) directing air to intermix with the air in the first flow path, and then to mix with fuel injected by the fuel injector, said first and second flow paths (52,54;82) being positioned to inject air upstream of the downstream end of the fuel injector where fuel is injected, wherein said first flow path is provided in a greater volume than the volume provided in the second flow path (54;82), and the intermixed first and second flow paths create turbulence to atomize and entrain fuel, wherein a third air flow path (56;84) injects air to intermix with the air in the first and second flow paths (52,54;82) downstream of the downstream end of the fuel injector, the third air flow path (56;84) being in a circumferential direction generally the same as the first circumferential direction, wherein said third air flow path (56;84) mixes with said first and second air flow paths (52,54;82) at a location downstream of the downstream end of the swirler body; and wherein the flow paths are designed such as a ratio of volume of air in the first air flow path to the volume of air in the second flow path (54;82) is between 1.5 and 19; and a ratio of the sum of the volumes of air in the first and second flow paths (52,54;82) to the volume in the third flow path (56;84) is between 3.0 and 19.0. a frustoconical swirler body extending from an upstream end to a downstream end, a fuel injector extending into the body, and having a downstream end for injecting fuel in a downstream direction; a first flow path for directing air in a first circumferential direction about a central axis of the swirler body; and a second flow path (54;82) directing air to intermix with the air in the first flow path, and then to mix with fuel injected by the fuel injector, said first and second flow paths (52,54;82) being positioned to inject air upstream of the downstream end of the fuel injector where fuel is injected, wherein said first flow path is provided in a greater volume than the volume provided in the second flow path (54;82), and the intermixed first and second flow paths create turbulence to atomize and entrain fuel, wherein a third air flow path (56;84) injects air to intermix with the air in the first and second flow paths (52,54;82) downstream of the downstream end of the fuel injector, the third air flow path (56;84) being in a circumferential direction generally the same as the first circumferential direction, wherein said third air flow path (56;84) mixes with said first and second air flow paths (52,54;82) at a location downstream of the downstream end of the swirler body; and wherein the flow paths are designed such as a ratio of volume of air in the first air flow path to the volume of air in the second flow path (54;82) is between 1.5 and 19; and a ratio of the sum of the volumes of air in the first and second flow paths (52,54;82) to the volume in the third flow path (56;84) is between 3.0 and 19.0.