MAßnahmen zur SchallpegelSenkung Im Flugverkehr
Effektive Triebwerkslärmminderung

1. MTU Aero Engines GmbH
2. Rolls-Royce Deutschland Ltd&Co KG
3. EADS Deutschland GmbH
4. PFW Aerospace AG
5. DLR, Institut für Aerodynamik und Strömungstechnik, Institut für Antriebstechnik
6. TU Berlin, Institut für Strömungsmechanik und Technische Akustik
7. AneCom AeroTest GmbH
8. MeliCon GmbH

Project Applicants / Contact: Dipl.-Ing. Dr.techn. Andreas Marn (Project Manager)

Objective:

Within the research programme air traffic noise in the research association "low noise traffic" a scientific synergy effect between the programmes FREQUENZ, NASGET and LEXMOS is visible. An optimal reduction in air traffic noise and its evaluation culd be achieved. Here, Lufthansa acts as a programme leader. This succesful co-operation should be continued where the consortium MassiF-Effekt (MAßnahmen zur SchallpegelSenkung Im Flugverkehr–Effektive Triebwerkslärmminderung) is providing information regarding sound propagation of aero engines and reduction measures in terms of the overall system airplane/fly path and evaluation of the sound immissions.

1. Improve understanding of sound propagation

2. Measures to reduce noise in the by-pass duct

3. Development of novel 3D methods in order to predict noise propacation in the by-pass duct

4. Evaluation of differen sound absorbing bladings

5. Reduction of combustion noise by means of novel inovative absorbers that should reduce both, turbine and combustion chamber noise

6. Experimental investigation of fan noise reduction technologies

7. Implementation of measurement techniques to localise noise sources in closed engine test beds

First results:

Theses: