Abstract: An apparatus for manufacturing composite parts produced by resin transfer molding (RTM) is configured to operate in controlled flow-rate mode or controlled pressure mode to use the RTM technique for manufacturing large-sized composite parts with a low fiber content. In both modes, control is by means of a fuzzy logic control card. In controlled flow-rate mode the resin is injected alternately by two injection cylinders (40a and 40b) controlled by motors whose speed is controlled. In controlled pressure mode the resin is injected directly from resin supply vessels (16) subjected to pressure controlled by an air regulator (30).

Abstract: For moulding self-stiffened panels (A) from a composite material with a thermosetting matrix, use is made of a tool having a block (10), a sealing bag (12), whose peripheral edge is connected to the block by a sealing bead (14), and solid, non-deformable calibration parts (22). Panel (A) is placed in a tight volume (16) defined between the block and the bag, while the parts (22) are placed outside said volume, above the bag and between the panel stiffeners (C). The calibration parts (22) are connected by a rigid structure (24). Thus, when the volume (16) is placed under a vacuum and when the tool is placed in an oven or autoclave, a uniform pressure is applied to the panel by the bag (12) and the parts (22) ensuring the maintenance of the geometry of the stiffeners.