Combustion chamber for gas turbine engines has bushings that are fixed to holes formed on sidewalls, and which are individually provided with orifice that is fed with air to cool peripheral wall of bushing

摘要

Each of the bushings fixed to the holes formed on the sidewalls has an elliptical right section. The peripheral wall of each bushing has at least one groove that opens out into an annular space (4) defined between the combustion chamber and a casing (1). At least one orifice formed on the peripheral wall of each bushing opens out so as to be fed with air and to cool the peripheral wall of the bushing. The combustion chamber has outer and inner (2b) sidewalls interconnected by an end wall (2c), and is received in the casing, thereby defining the annular space that allows air to flow for combustion, for dilution and for cooling the combustion chamber. The sidewalls are pierced by holes, with bushings fixed within, forming air injection passages for injecting air into the combustion chamber. Each bushing has a peripheral wall with at least one additional orifice that opens out into the combustion chamber in the immediate vicinity of a sidewall so that air passing through the orifice flows along the sidewall. An Independent claim is also included for a bushing.