Airblast fuel injectors

An airblast fuel injector assembly for a gas turbine engine comprising:

• a) an annular air swirler including:
• i) a main body having a rear end wall defining a central axis of the annular air swirler, and a radially outwardly expanding conical wall portion extending downstream from the rear end wall;
• ii) an inner air cooler formed in the rear end wall of the main body portion;
• iii) an inner air swirler formed in an annular wall of the main body radially outboard from the conical wall portion;
• iv) a prefilmer radially outboard from the inner air swirler and including a circumferential prefilming surface extending downstream from the inner air swirler, wherein the prefilming surface has a circumferential internal fuel passage formed therein;
• b) a gas turbine engine case including an outer wall and a casing inlet hole through the outer wall;
• c) a fuel injector including a fuel injector flange and a feed tube mounted within the fuel injector flange, the feed tube having at least one fuel tip projecting through a respective reception hole formed in the annular wall of the main body radially outboard from the inner air swirler, each fuel tip having a fuel port positioned axially aligned with the circumferential prefilming surface and configured to direct fuel tangentially into the internal fuel passage in the prefilming surface, wherein the fuel injector flange seals the casing inlet hole, and the feed tube passes through the casing inlet hole.