Brief description of the positioning of the elements of a panel self - stiffened in composite prepreg

摘要

Pre-impregnated carbon fiber layers are superimposed to form a base skin (1). One or more reinforcing layers (9) of carbon fiber prepreg, are located and formed on individual U-section plungers (5). These have rounded edges and their lengths, heights and internal widths correspond with dimensions of the U-shaped stiffeners (2) to be manufactured. Longitudinal edges of the layers are turned down (13) over the height of the plungers, forming rib halves (3a, 3b) of the reinforcing ribs. The plungers are located side-by-side in inverted-U formation. An approximately triangular section (4) or head, is located between the two descending edges (13) which face each other. The entire assembly is compacted, and then inverted through 180[deg]. It is positioned onto the skin, which is laminated-on as a flat, continuous surface, defined by its external face and the meeting of the components described above. The plungers are then retracted.