Composite sandwich structure for use in structural components of aircraft

摘要

A sandwich structure for structural components of aircraft comprises a foam core (1) and facing layers (2). The foam core (1) is constructed from foam-filled hollow body segments (3) or rigid foam body segments (3) of a hard/rigid foam. Segments (3) lie above and/or adjacent to each other to form a segment row and a fibre layer (5) runs along a meandering path between adjacent segments so that the segment side faces (31) are fibre covered in some areas and exposed in adjacent areas. Fibrous facing layers (2) cover the upper and lower faces of the resulting segmented plate. The fibre layer (5) and the fibre facing layer (2) are impregnated with a matrix material which on curing bonds the fibrous layer (5) to the segments, the facing layers (2) and non fibre-covered areas to give a reinforced composite plate. Also claimed is a resin injection process for manufacturing the sandwich structure.