The Project LIGHT-COWLS aimed to find out a way to produce rotating nacelle components for aircraft engines by using composites materials with high Tg, production method can be RTM or ATL. In particular the design and manufacturing of rotating nacelle of the CROR was targeted. The materials to be used for this development were high Tg resins and fibers as reinforcement. Thus, the project looked for a cost-effective way of producing conical cylindrical components of about 1,5 m. diameter in these composites material. The project included the design and fabrication of a component for a demo engine SAGE2. The aim was to get a cost-effective way of manufacturing, complex shape parts for aeroengines.