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JEt noise of high bypass RatiO eNgine: Installation, advanced Modelling and mitigatiOn

PROJECTS
Funding
European
European Union
Duration
-
Status
Complete with results
Geo-spatial type
Other
Total project cost
€7 361 403
EU Contribution
€4 838 815
Project Acronym
JERONIMO
STRIA Roadmaps
Vehicle design and manufacturing (VDM)
Transport mode
Airborne icon
Transport sectors
Passenger transport,
Freight transport

Overview

Call for proposal
FP7-AAT-2012-RTD-1
Link to CORDIS
Objectives

The central goal of JERONIMO is the understanding of the physical mechanisms of ultrahigh bypass ratio (UHBR) engines with a bypass ratio (BPR) larger than 12 and the related installed jet noise with potential jet-wing interaction. The aim is to reduce uncertainties in jet noise characterisation of this novel installation configuration by wind tunnel tests and predictions and being able to derive design recommendation for future UHBR Engine jet noise reduction. 

Methodology

For the achievement of those goals, UHBR engines have to be investigated experimentally for their jet noise characteristics in the isolated and installed configuration. A consistent database will be built at European level in the major jet noise test facilities, at NTF and CEPRA19, applying advanced and improved measurement techniques such as far-field noise & near-field pressure measurements, combined with aerodynamic methods like PIV.
In parallel, existing CFD-CAA simulation tools will be adapted and validated (or used state-of-the-art only), and the overall methodology to predict flight stream effects and complex interaction mechanisms for UHBR engine jet noise at medium and full scale will be developed. This will need an identification of the key physical or key flow features by a detailed processing of the experiments together with numerical data for steady and unsteady flow conditions and acoustics in combination with analytical/theoretical methods, such as flow instability analysis. Innovative nozzles will be designed regarding the UHBR architecture, tested and assessed to reduce UHBR engine installed jet noise. Finally, recommendations in term of e.g. the relative position of nozzle/wing will be provided, the methods & data will be assessed. An evaluation for aircraft noise and a common database will be established.

Funding

Parent Programmes
Institution Type
Public institution
Institution Name
The European Commission
Type of funding
Public (EU)

Results

Engines for silent aircraft

An EU-funded project is advancing state-of-the-art research in jet noise reduction by not considering the jet noise source itself but the complete system of wing and engine. Project findings will mainly concern long-haul flights.

A quick scan on recent EU-funded projects reveals considerable progress in numerical tools for predicting aircraft noise. Conclusive answers to source mechanisms are required since the ability to further reduce noise may involve engine architectures and identifying complex flow conditions.

Understanding the source mechanisms of installed jet engine noise and appropriate design recommendations are necessary for successfully integrating an ultra-high bypass ratio (UHBR) engine in an aircraft. The EU-funded project 'Jet noise of high bypass ratio engine: Installation, advanced modelling and mitigation' (JERONIMO) is investigating the physical mechanisms driving the installed jet noise of UHBR engines with a bypass ratio larger than 12. Scientists are experimentally characterising jet noise of UHBR engines that are isolated or installed, considering also jet-wing interaction.

Through anechoic wind tunnel tests and numerical simulations, scientists will validate noise characterisation and prediction processes. Based on the results, they will derive low-noise design guidelines for future UHBR engines. A consistent database at a European level in major noise test facilities will provide improved measurement techniques. These include near-field pressure and particle image velocimetry complementing the far-field noise.

Project work will also include adaptation and validation of state-of-the-art computational fluid dynamic tools and development of methodology to predict flight stream effects. Investigation will focus on complex interaction mechanisms of jet stream flows and wings. Scientists will identify key flow features through detailed processing of the experimental data together with numerical data, correlating for instance steady or unsteady flow conditions with acoustics. Innovative nozzles will be developed and recommendations will be provided in terms of relative positions of the nozzle and the wing.

So far, project members have conducted important work with respect to characterising UHBR jet noise and performing numerical simulation for jet aeroacoustics. Furthermore, they have drawn up specifications for the nozzle model design, the test matrices and the wind tunnel tests.

JERONIMO should lead to quieter aircraft and reduced product development times and costs, allowing the European aeronautical industry to maintain a strong position.

Partners

Lead Organisation
Organisation
Airbus Defence And Space Gmbh
Address
Ludwig-Boelkow-Allee 1, 85521 Ottobrunn, Germany
Organisation website
EU Contribution
€540 132
Partner Organisations
Organisation
Cfd Software - Entwicklungs- Und Forschungsgesellschaft Mbh
Address
Wolzogenstrasse 4, 14163 Berlin, Germany
EU Contribution
€369 960
Organisation
The Chancellor Masters And Scholars Of The University Of Cambridge
Address
TRINITY LANE THE OLD SCHOOLS, CAMBRIDGE, CB2 1TN, United Kingdom
Organisation website
EU Contribution
€330 354
Organisation
Inasco Hellas Etaireia Efarmosmenon Aerodiastimikon Epistimon Ee
Address
Napoleontos Zerva 18, 16675 Glyfada Athina, Greece
EU Contribution
€125 332
Organisation
Safran Aircraft Engines
Address
2 Bvd Du General Martial-Valin, 75724 Paris, France
EU Contribution
€249 568
Organisation
Rolls-Royce Deutschland Ltd & Co Kg
Address
Eschenweg 11, 15827 BLANKENFELDE-MAHLOW, Germany
EU Contribution
€361 798
Organisation
Airbus Operations Sas
Address
ROUTE DE BAYONNE 316, 31060 TOULOUSE, France
Organisation website
EU Contribution
€468 945
Organisation
Office National D'etudes Et De Recherches Aerospatiales
Address
CHEMIN DE LA HUNIERE, 91120 PALAISEAU, France
Organisation website
EU Contribution
€913 256
Organisation
Deutsches Zentrum Fr Luft Und Raumfahrt E.v
Address
Linder Hoehe, 51147 KOELN, Germany
Organisation website
EU Contribution
€667 752
Organisation
Universita Degli Studi Roma Tre
Address
Via Ostiense 159, 154 Roma, Italy
EU Contribution
€72 000
Organisation
Centre Europeen De Recherche Et De Formation Avancee En Calcul Scientifique
Address
Avenue Gaspard Coriolis 42, 31057 Toulouse, France
Organisation website
EU Contribution
€194 974
Organisation
University Of Southampton
Address
Highfield, Southampton, SO17 1BJ, United Kingdom
Organisation website
EU Contribution
€265 000
Organisation
Centre National De La Recherche Scientifique
Address
3 rue Michel-Ange, 75794 PARIS, France
Organisation website
EU Contribution
€279 746

Technologies

Technology Theme
Aircraft propulsion
Technology
Ultra-high bypass ratio jet engine
Development phase
Research/Invention

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