Collaborations / Projets

Projets européens



ADAPT (ADvanced Aeroacoustic Processing Techniques)

LVA, ECL, MicrodB, PSA3 (EU Cleansky 2, topic manager : Airbus)

Description: Airbus is currently conducting various experimental studies, dealing with installing microphones on the fuselage, on the wall of a wind tunnel test section or on specific microphone supports on the flow, in order to record the sounds emitted by each aircraft component (i.e. engine, wing etc.). In either case, microphone measurements are polluted by hydrodynamic noise, which hampers the correct assessment of acoustic signals emitted from aircraft components, thus leading to very low signal-to-noise ratio.
A few methods exist today that can eliminate hydrodynamic noise from acoustic signals. However, the efficacy of these methods strongly depends on various parameters, such as signal-to-noise-ratio, number of microphones, number of incoherent sources etc. No systematic study has been performed so far to assess the parameter boundaries within which acceptable results are obtained (e.g. within 0.5 dB error for example).
The ADAPT consortium will improve and optimize the ability of identifying sources emitted by aircraft components by using the most effective techniques out of the three proposed approaches in the call for proposal. These three approaches are: aeroacoustic source separation, de-noising techniques based on cyclostationarity and aeroacoustic sources localization.
Through these three approaches, the ADAPT project aims at delivering to AIRBUS a tool dedicated to separating airframe and engine noise components (tonal, broadband cyclostationary components in particular) from hydrodynamic pressure noise and identifying these sources in space, satisfying various technical and economical requirements that will be discussed out with AIRBUS at the beginning of the project.



PBNv2 is formed by 10 beneficiaries combining leading education institutes, top research institutions and leading companies as well as 7 partner organisations established in European automotive R&D, to assist in the dissemination and public engagement or PBNv2 results, and in providing dedicated training to enhance the entrepreneurial mind set of 14 ESRs



Partenaires :
eVADER will investigate the interior and exterior sound scape of electric vehicle for safe operation, considering drivers feedback, feasible pedestrian reactions, driver and pedestrian warning systems and pedestrian safety. The project will also analyse innovative methods to improve the acoustic detectatibility of electric vehicles in urban scenarios. The project will define solutions to warn vulnerable users of a nearby moving vehicle while providing means for heightening the awareness of drivers in critical situations.

Partenaires :
Finite element analysis (FEA) is a “low frequency” method which is both well developed and well established. At “high frequencies” statistical energy analysis (SEA) is a valuable, but less well-established, tool. There is however a “mid-frequency” gap in our modelling capabilities: too high for FEA, too low for SEA. This is important, since it strongly affects product performance and competitiveness, and forms the target for this ITN. Substantial challenges exist in this “mid-frequency” range. New analysis approaches are essential to produce world-leading products


Partenaires :
SILENCE, a three-year research project co-funded by the European Commission, has developed an integrated methodology for the improved control of surface transport noise in urban areas. Now that the project has come to its end, it has unveiled world-leading technologies and innovative strategies to reduce noise both from rail and road in European cities and for European citizens.

ADvanced Aeroacoustic Processing Techniques