TS EN 4408-003

TS EN 4408-003 addresses the drawing conventions used to represent composite-material parts in aerospace technical drawings, with specific attention to parts that include core materials. In practical terms, it helps define how a core-based composite construction should be identified on the drawing and what supporting information should accompany the representation. Because the external shape alone does not fully describe a sandwich-type composite part, clear notation is essential for manufacturing and inspection.

Why core-material parts need separate drawing treatment

In general engineering practice, core-containing composite structures are often used as lightweight, stiff sandwich constructions. The same outer geometry can be built with different core types, face-sheet arrangements, and local details, leading to very different performance. For that reason, technical drawings for these parts must communicate more than dimensions alone; they must also convey the material architecture in a way that is unambiguous to designers, manufacturers, and inspectors.

What this standard covers in the drawing context

According to the supplied scope, this standard specifies the rules for representing parts including core materials and the information to be indicated in technical drawings. Its focus is therefore on graphical and documentary representation rather than on production methods themselves. Used alongside the related parts of the EN 4408 series, it contributes to consistent terminology and a coherent approach to composite-part drafting.

• Aerospace technical drawing representation for composite parts
• Identification of parts that include core materials
• Clear indication of the information to be shown on drawings
• Consistency with the related parts of the same series