COMBUSTOR WITH IMPROVED AERODYNAMICS

A lean burn combustor (16) comprises a plurality of lean burn fuel injectors (50), each comprising a fuel feed arm (52) and a lean burn fuel injector head (54) with a lean burn fuel injector head tip (72), wherein the lean burn fuel injector head tip has a lean burn fuel injector head tip diameter (d), the lean burn fuel injector head comprising a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber (60) extending along an axial direction (62) for a length (L) and comprising a radially inner annular wall (64), a radially outer annular wall (66), and a meter panel (68) defining the size and shape of the combustor chamber, wherein the combustor chamber comprises a primary combustion zone (80) and a secondary combustion zone (82). A ratio L/d of the combustor chamber length to the lean burn fuel injector head tip diameter is less than 5.