Air modulated carburetor with axially moveable fuel injector tip and swirler assembly responsive to fuel pressure

A carburetor for discharging fuel and air into a gas turbine engine combustor comprising:

• a fuel injector including a hollow injector body fixedly joined to a hollow supporting stem for receiving fuel therein, and an injector tip slidingly mounted to said injector body for movement relative thereto, said injector tip being disposed in flow communication with said injector body for receiving said fuel and discharging said fuel into said combustor;
• an annular air swirler attached to said injector tip for movement therewith, and spaced from said injector body to define an inlet for receiving air, and spaced from said injector tip to define an outlet for discharging swirled air from said swirler concentrically around said fuel discharged from said injector tip;
• and
• a spring operatively engaging said injector body and said injector tip for biasing said injector tip and attached swirler to an initial position, and said spring being sized so that increasing pressure of said fuel in said injector body further loads said spring for moving said injector tip and attached swirler from said initial position to a displaced positions.