TS EN 4408-004

TS EN 4408-004 is a standard for the way parts made of composite materials by winding are represented on aerospace technical drawings. In this context, a technical drawing is not only a shape outline; it is also the medium used to communicate the features needed to identify, manufacture and inspect the part consistently across design and production activities.

Why wound composite parts need dedicated drawing rules

Winding is a composite manufacturing method in which fibres are laid in a controlled path, often around a mandrel, to build up a structure with defined orientation and layer arrangement. From general engineering practice, this matters because performance in composite parts is strongly linked to fibre direction, ply build-up and local thickness variations. That is why the representation of these parts on drawings typically needs more than a simple external outline: the drawing must help convey the structural logic behind the part.

What this document covers in practical terms

According to its scope, the standard sets out the rules for representing wound composite items and the information to be indicated in technical drawings. It belongs to a broader aerospace drawing standard family, which indicates that the subject is standardized representation rather than material design itself. The focus is on making the drawing information clear, consistent and suitable for aerospace use, where unambiguous communication is especially important.

• Aerospace composite parts represented on technical drawings
• Representation rules for items obtained by winding
• Information that should be shown on the drawing
• Consistent communication of geometry and manufacturing-related detail