SMM Composites Meets Tight Timeline for Advanced Wing Sail Production

Published date:23/04/2026 | Last updated date:23/04/2026

French manufacturer SMM Composites has successfully delivered a series of carbon fiber composite reinforcements for rigid wing sails developed by marine propulsion innovator CWS (Computed Wing Sail), demonstrating how precision composites manufacturing can scale under time pressure.

The project required the production of three wing assemblies, each incorporating 18 omega-shaped structural components, bringing the total to 54 high-performance composite parts delivered within a compressed timeline.

High-performance composites for next-generation marine propulsion

The wing sails, designed by CWS, represent a new generation of rigid, foldable wind propulsion systems aimed at improving maritime efficiency and reducing fuel consumption.

Such systems demand:

• high stiffness-to-weight ratios
• long-term structural stability
• consistent manufacturing quality across multiple parts

SMM Composites’ role was to supply reinforcements that meet these strict performance requirements while maintaining production efficiency.

Manufacturing strategy focused on speed and repeatability

To meet the delivery schedule without compromising quality, SMM Composites implemented a production strategy built around parallel processing and process control.

Multi-cavity mold for rapid production

A key innovation was the use of a six-cavity timber mold, enabling:

• simultaneous production of six parts per cycle
• completion of all 18 omega components for a single wing in just three infusion cycles

This approach significantly reduced production time while maintaining consistency across parts.

Advanced machining fixtures with 3D printing

For post-processing, the company developed custom machining fixtures using large-scale 3D printing, in collaboration with CMS Advanced Materials Technology.

These fixtures include:

• bottom-up vacuum clamping systems
• precise positioning capability
• enhanced stability during machining

This setup allows for:

• faster setup times
• improved machining accuracy
• reduced variability between components

Balancing craftsmanship with industrial production

The project highlights a key trend in composite manufacturing:

👉 combining traditional craftsmanship with digital and automated production tools

By integrating:

• infusion-based composite fabrication
• multi-cavity tooling
• additive manufacturing for fixtures

SMM Composites achieved a balance between:

• production speed
• repeatable quality
• structural performance

🔒 Content Transparency & Editorial Integrity

This article is developed based on real engineering experience, machine testing data, and practical production knowledge from Jota Machinery’s work in advanced composite manufacturing.

All technical explanations—including material structure, processing methods, and performance characteristics—are reviewed and verified by our engineering team to ensure accuracy and real-world relevance.

To improve clarity and structure, AI-assisted tools may have been used during content organization and language refinement. However:

• All key technical insights originate from first-hand industrial experience
• All data and claims are manually reviewed and validated
• The content is created with the primary goal of educating engineers, manufacturers, and buyers

We do not publish content solely for search ranking purposes. Every article is designed to provide practical, experience-based value to professionals in the composite materials industry.

Editorial perspective

This project is a clear example of how composite manufacturing is evolving.

The challenge was not just to produce high-performance parts—but to do so:

• quickly
• consistently
• at scale

The solution was not a single breakthrough, but a system-level optimization:

• smarter tooling
• parallel production
• digital fixture design

In advanced composites, this is where real competitiveness is shifting.

👉 Not just in material performance,
but in how efficiently and reliably those materials can be manufactured

As industries like marine propulsion adopt more composite-intensive designs, the ability to deliver high-quality parts at speed will become just as critical as the materials themselves.