Noise reduction breakthroughs for new ultraefficient aircraft

What is this call about?

The call funds research on methods to predict and reduce the noise of new ultra-efficient passenger aircraft, especially those with open fan and ultra-high bypass ratio engines, including cabin noise.

What does this call fund?

Scope

This Horizon Research and Innovation Action develops advanced, validated numerical and experimental aero-acoustic methods to predict the noise of new ultra-efficient aircraft designs, mainly large passenger aircraft with open fan engines and ultra-high bypass ratio architectures.

Focus

• Stronger fundamental understanding, closing of knowledge gaps and new or updated technologies that enable open fan designs.
• Technology building blocks for significantly reduced cabin noise.
• Existing and new experimental data and procedures, multidisciplinary design and optimisation, aerodynamics, aeroacoustics and noise-reducing metamaterials and structures.
• Optionally, better noise footprint assessment and better understanding and mitigation of annoyance.

Expected outcomes

Progress on airframe and cabin noise for new aircraft designs, engine noise sources and installation effects, and methods for noise perception, annoyance and mitigation. The work should build on lessons and gaps identified in earlier projects.

What are proposals expected to do?

• Proposals should build on lessons learnt and gaps identified in H2020.CS2-LPA-01-D01 and complement projects from HORIZON-CL5-2022-D5-01-12.

When is the deadline?

14 April 2027 (160 days)

Two-stage call: first-stage deadline 14 April 2027 and second-stage deadline 7 October 2027. Planned opening date: 15 December 2026.