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Adaptive and Passive Flow Control for Fan Broadband Noise Reduction

Adaptive and Passive Flow Control for Fan Broadband Noise Reduction

Objective

Air traffic is predicted to grow by 5% per year in the short and medium term. Technology ad-vances are required to achieve this growth without unacceptable levels of noise. FLOCON addresses this issue by reducing fan noise at source through the development of innovative concepts based on flow control technologies. FLOCON is aimed primarily at reducing fan broadband noise. This is one of the most signifi-cant noise sources on modern aircraft and FLOCON provides one essential element of a wider effort by the industry to achieve established targets for noise reduction. Previous attempts at reducing broadband noise have been inhibited by a limited understand-ing of the dominant mechanisms and by a lack of high-fidelity numerical models. These is-sues are addressed in the ongoing PROBAND FP6 project. In FP7, FLOCON moves beyond the scope of PROBAND to the development of specific concepts for reducing noise in aero-engine fan stages. A wide range of concepts will be considered and brought up to Technology Readiness Level 4 (laboratory scale validation): • Rotor trailing edge blowing • Rotor tip vortex suction • Rotor overtip treatments • Rotor and Stator leading and trailing edge treatments • Partly lined stator vanes Experiments will be performed on two rotating rigs, supported where possible by more detailed measurements on a single airfoil and a cascade. Numerical methods will be used to optimize the concepts for experimental validation and to extrapolate the results from labora-tory scale to real engine application. The potential benefit of each concept will be assessed, including any associated penalties (weight, complexity, aerodynamic performance). Recommendations will be given as to which concepts could be integrated into new engine designs and which will require further valida-tion at industrial rig or full engine-scale. Required developments in enabling technologies will also be identified.

Coordinator

DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV

Address

Linder Hoehe
51147 Koeln

Germany

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 571 500

Administrative Contact

Christine Zöllter (Ms.)

Participants (16)

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SAFRAN AIRCRAFT ENGINES

France

EU Contribution

€ 187 957

ROLLS-ROYCE PLC

United Kingdom

EU Contribution

€ 169 000

AIRBUS DEFENCE AND SPACE GMBH

Germany

EU Contribution

€ 266 779

MTU AERO ENGINES GMBH

Germany

EU Contribution

€ 195 300

GKN AEROSPACE SWEDEN AB

Sweden

EU Contribution

€ 177 000

AVIO SPA

Italy

EU Contribution

€ 95 500

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

France

EU Contribution

€ 341 500

UNIVERSITY OF SOUTHAMPTON

United Kingdom

EU Contribution

€ 267 000

ECOLE CENTRALE DE LYON

France

EU Contribution

€ 304 000

UNIVERSITAET SIEGEN

Germany

EU Contribution

€ 137 000

FLUOREM

France

EU Contribution

€ 227 000

CHALMERS TEKNISKA HOEGSKOLA AB

Sweden

EU Contribution

€ 150 000

TECHNISCHE UNIVERSITAT BERLIN

Germany

EU Contribution

€ 182 000

STICHTING NATIONAAL LUCHT- EN RUIMTEVAARTLABORATORIUM

Netherlands

EU Contribution

€ 92 000

MICROFLOWN TECHNOLOGIES BV

Netherlands

EU Contribution

€ 122 000

SANDU M. CONSTANTIN PERSOANA FIZICA

Romania

EU Contribution

€ 77 000

Project information

Grant agreement ID: 213411

Status

Closed project

  • Start date

    1 September 2008

  • End date

    31 August 2012

Funded under:

FP7-TRANSPORT

  • Overall budget:

    € 5 277 681,87

  • EU contribution

    € 3 562 536

Coordinated by:

DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV

Germany

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