MANUFACTURE OF A COMBUSTION CHAMBER OF COMPOSITE MATERIAL

摘要

The invention relates to the manufacture in CMC of an annular combustion chamber of a turbojet engine. For this, we use a tool (200) of conformation with movable drawers and we realize said chamber around the tool, making for this a fiber preform (110) which is consolidated in its form by draping on the tool and pyrolysis, then densified by CVI. Several drawers (210) have undercuts, at least one other said drawer having an undercut (211c) or neither undercut nor undercut. Then, the drawers are removed in a predetermined order imposed by the undercuts and the relative positions of the drawers.