This report summarizes the Clean Sky 2 program, a European initiative spanning from 2014 to 2024 that focused on developing sustainable aviation technologies. It details the program’s structure, including its key demonstrators and technology readiness levels, aimed at reducing CO2, NOx, and noise emissions while enhancing the competitiveness of the European aviation industry. The document highlights significant achievements in areas like novel aircraft configurations, propulsion efficiency, and innovative structures, and outlines the path for these technologies to contribute to the future of clean aviation, including through the successor Clean Aviation program. The report also emphasizes the collaborative effort involving numerous industry partners, research centers, and universities across Europe, and its synergies with EU Member States and Regions.
Source: Clean Aviation (2025). CLEAN SKY 2 ACHIEVEMENT REPORT 2014 – 2024. A Decade of Innovation for a ustainable European Aviation Industry [WWW Document]. URL https://clean-aviation.eu/research-and-innovation/clean-sky-2 (accessed 5.14.25).