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Turbomachinery Noise Radiation through the Engine Exhaust

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.

Coordinator

UNIVERSITY OF SOUTHAMPTON

Address

Highfield
Southampton

United Kingdom

Administrative Contact

Brian John TESTER (Dr)

Participants (11)

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AIRBUS OPERATIONS SAS

France

DASSAULT AVIATION

France

ROLLS-ROYCE DEUTSCHLAND LTD AND CO KG

Germany

ROLLS-ROYCE PLC

United Kingdom

FREE FIELD TECHNOLOGIES

Belgium

DEUTSCHES ZENTRUM FUER LUFT-UND RAUMFART E.V.

Germany

EADS DEUTSCHLAND GMBH

Germany

TECHNISCHE UNIVERSITEIT EINDHOVEN

Netherlands

AVIO SPA

Italy

MIDDLE EAST TECHNICAL UNIVERSITY

Turkey

STICHTING NATIONAAL LUCHT EN RUIMTEVAARTLABORATORIUM

Netherlands

Project information

Grant agreement ID: 516079

  • Start date

    1 January 2005

  • End date

    30 June 2008

Funded under:

FP6-AEROSPACE

  • Overall budget:

    € 4 695 921

  • EU contribution

    € 2 899 818

Coordinated by:

UNIVERSITY OF SOUTHAMPTON

United Kingdom

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