In a major milestone for European aviation innovation, the Clean Sky 2 Regional Aircraft Integrated Aircraft Demonstrator Platform (REG IADP) has successfully developed and validated the Pax Cabin Demonstrator, which is a full-scale, ground-based test platform that brings next-generation regional aircraft cabins to life. 

Led by Leonardo Aircraft Division and supported by Fraunhofer and multiple European partners, the demonstrator showcases how advanced lightweight composites, ergonomic design, and rigorous testing can converge to deliver a quieter, more comfortable, and more environmentally sustainable passenger experience. 

Measuring 7.3 meters long and 3.4 meters in diameter, the cabin mock-up integrates structural elements, including composite-stiffened panels and bio-based interiors, as well as functional systems for air quality, temperature, noise, and vibration management. Two intensive test campaigns validated these technologies against real-world data gathered on ATR72-500 flights. 

Fraunhofer’s Victor Norrefeldt states that, "One of the key achievements was comparing the demonstrator’s performance to actual in-flight measurements, which enhanced its realism and technology readiness." 

Notably, 94.5% of test passengers confirmed they would choose to fly in such a cabin again. The cabin components, including biocomposite panels, achieved an estimated 8% weight reduction compared to early-2000s interiors, paving the way for significant CO? savings over the aircraft’s lifespan.

Beyond validating materials and systems, the project reached Technology Readiness Level 6, confirming these solutions are mature enough for further development and potential in-flight applications. The demonstrator will remain available as a platform to accelerate research into future cabin concepts, hybrid-electric systems, and advanced thermal management. 

From inclusive design considerations for passengers with reduced mobility to sustainable fire-retardant biocomposites, the Pax Cabin Demonstrator sets a new benchmark for regional aircraft innovation aligned with Europe’s climate ambitions. 

"This project brought together many actors from across Europe," said Norrefeldt. "And everybody contributed to this achievement." 

Source: clean-aviation.eu