Aircraft noise Reduction Technologies and related Environmental iMpact

The ARTEM (Aircraft noise Reduction Technologies and related Environmental iMpact) project brought together seven EREA members and strategic partners, including leading European universities and major entities from the aerospace industry, to tackle the technology challenges of reducing aviation noise as outlined in the call MG-1-2-2017. The project's primary aim was to mature promising novel concepts and methods related to new low-noise aircraft configurations projected for 2035 and 2050. A key focus of ARTEM was developing innovative technologies to reduce noise at the source, moving beyond reducing isolated noise sources like fan or landing gear noise, and addressing the interaction of various components and sources, which significantly contribute to overall aircraft noise.

Additionally, ARTEM explored innovative concepts for effectively damping engine noise and other sources by investigating dissipative surface materials and liners. These technology concepts aimed to overcome the limitations of current devices, such as narrow band absorption peaks or poor low-frequency performance. The project proposed maturing and selecting these technologies through comparative testing in a single relevant setup. Further investigations were conducted into the noise shielding potential for future aircraft configurations.

The noise reduction technologies were integrated into the modeling of future aircraft configurations, including the blended wing body (BWB) and other innovative concepts with integrated engines and distributed electrical propulsion. The impact of these new configurations with low-noise technology was assessed using industry tools, airport scenario predictions, and auralization. ARTEM's holistic approach to noise reduction aimed to enable the expected increase in air traffic while minimizing the environmental impact.