<p>➀ The TAVieDA project introduces thermoplastic carbon fiber composites (CFK) to replace aluminum and titanium, enabling automated welding and reducing aircraft door assembly time from 110 to 4 hours;</p><p>➁ A modular design and fully automated assembly line with resistance and ultrasonic welding technologies allow batch production and rapid reconfiguration for different door models;</p><p>➂ Integrated technical and economic simulations confirm the solution's cost-effectiveness, reducing planning time by 25% and achieving significant scale effects for annual production of 4,000 doors.</p>