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Turbomachinery Noise Radiation through the Engine Exhaust

Objective

Research is needed to develop innovative concepts and enabling technologies to reduce aeroengine noise at source. Turbomachinery noise radiating from the bypass and core nozzles is becoming the dominant noise source on modern aircraft, but, while recent EU research programmes have made significant progress in reducing both the generation of turbbmachinery noise and the radiation of noise from the intake, little work has been conducted on reducing the radiation of turbomachinery noise from exhaust nozzles.
TURNEX will address this shortfall by delivering improved understanding and validated design methods, and by evaluating a number of low-noise nozzle configurations aimed at a source noise reduction of 2-3dB.To achieve that goal, TURNEX will exploit the noise technology and methodology acquired in EC-funded projects and national programmes.

TURNEX has four focussed objectives:
1. To test experimentally at model scale innovative noise reduction concepts and conventional engine exhaust configurations utilising novel simulated turbomachinery noise sources and innovativemeasurement techniques.
2. To improve computational prediction methods for turbomachinery noise radiation through the engine exhaust and to validate these methods with the experimental data.
3. To conduct a parametric study of real geometry/flow effects and noise reduction concepts as applied to current and future aircraft configurations.
4. To assess technically the relative merits of different approaches to testing fan rigs in European noise facilities.

The consortium consists of two leading airframe manufacturers, three leading engine manufacturers, an SME that specialises in computational aeroacoustics software, three leading research centres and three leading universities from France, Germany, Belgium, the Netherlands, Italy, Turkey and the UK. This mix of partners forms the basis for delivering the ambitious project objectives.

Call for proposal

FP6-2003-AERO-1
See other projects for this call

Funding Scheme

STREP - Specific Targeted Research Project

Coordinator

UNIVERSITY OF SOUTHAMPTON
Address
Highfield
Southampton
United Kingdom

Participants (11)

AIRBUS OPERATIONS SAS
France
Address
316, Route De Bayonne
M0112/4 Toulouse
DASSAULT AVIATION
France
Address
9 Rond-point Des Champs-elysees-marcel Dassault
Paris
ROLLS-ROYCE DEUTSCHLAND LTD AND CO KG
Germany
Address
Eschenweg 11
Dahlewitz
ROLLS-ROYCE PLC
United Kingdom
Address
65 Buckingham Gate
London
FREE FIELD TECHNOLOGIES
Belgium
Address
16 Place De L'universite
Louvain-la-neuve
DEUTSCHES ZENTRUM FUER LUFT-UND RAUMFART E.V.
Germany
Address
Linder Hoehe
Koeln
EADS DEUTSCHLAND GMBH
Germany
TECHNISCHE UNIVERSITEIT EINDHOVEN
Netherlands
Address
Den Dolech 2 5612 Az
513 Eindhoven
AVIO SPA
Italy
Address
Strada Del Drosso, 145
Torino
MIDDLE EAST TECHNICAL UNIVERSITY
Turkey
Address
Inonu Bulvari
Ankara
STICHTING NATIONAAL LUCHT EN RUIMTEVAARTLABORATORIUM
Netherlands
Address
Anthony Fokkerweg 2, 1059 Cm
90502 Amsterdam