Patent ID: 8683806

Claim:
A baffle for a bottom of a combustion chamber of a gas turbine engine, comprising: a flat portion of wall with an upstream face, a downstream face and an opening for an injector of the combustion chamber to pass through; first and second longitudinal edges oriented in a radial direction relative to an axis of the engine; and first and second transverse edges which are rounded to follow the a curvature of the combustion chamber and curved towards an inside of the combustion chamber, wherein the first longitudinal edge includes a joint cover arranging a housing and the second longitudinal edge having a fitted tongue, wherein the first longitudinal edge cooperates with and covers the second longitudinal edge of an adjacent baffle so as to seal the junction between the two edges while allowing the baffles to slide relative to one another when the wall of the chamber bottom expands, wherein the tongue extends from a free edge of the first transverse edge along the upstream face of the flat portion to a free edge of the second transverse edge, wherein the tongue presents a groove-shaped housing, and wherein a plurality of the baffles cover an entire circumference of the combustion chamber.