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  • Technische Universität Braunschweig
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  • SE²A - Sustainable and Energy-Efficient Aviation
  • Research
  • ICA A "Assessment of the Air Transport System"
  • A2.2 - Environmental noise prediction for large long-term air traffic scenarios
Logo Sustainable and Energy Efficient Aviation of TU Braunschweig
  • ICA A "Assessment of the Air Transport System"
    • JRG-A1 - Overall System Evaluation
    • A1.1 Scenarios for Air Transport System in Alternative 2050 Environments (ScenAIR2050)
    • A2.1 - Exterior noise assessment of single fly-over events
    • A2.2 - Environmental noise prediction for large long-term air traffic scenarios
    • A2.3 - Assessment the impact of new aircraft technologies on cabin noise
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    • ⯇ back to research

A2.2 - Environmental noise prediction for large long-term air traffic scenarios

Motivation & project description

Simulation chain for aircraft noise prediction.
Simulation chain for aircraft noise prediction.

Air-traffic is expected to increase in the upcoming years. Hence, engineers are challenged to seek for innovative and sustainable strategies that can mitigate the environmental burden brought by the air transport system in future scenarios. Besides CO2 and NOX emissions, noise is the most relevant environmental impact, affecting especially communities living near airport areas.

As a result, the development and introduction of new low-noise aircraft concepts into civil aviation is playing an increasingly important role during aircraft conceptual design. In this context, the development of prediction tools that are capable of providing a reliable prognosis of the environmental noise emissions of novel aircraft technologies is highly desirable. 

With a specific focus on the assessment of new aircraft technologies while considering multiple flight events in realistic scenarios, this project is based on a state-of-the-art simulation chain (see Figure). A multi-fidelity approach is employed that couples three different software in order to model noise sources of individual components, incorporate these into the architecture of a whole aircraft and translate into ground noise. The ground noise is then assessed in a large-scale, realistic scenarios using relevant assessment measures.

 

 

Objectives

The main objective of this project is to establish a simulation chain that enables the prediction of the noise levels generated by novel aircraft concepts and flight procedures while considering a representative air traffic scenario, i.e. taking into account a given airport layout, fleet mix, flight trajectories, and individual aircraft noise emissions. Towards this goal, the following tasks are expected: 

  • Assessment of uncertainties associated with multi-scale tool coupling of the simulation chain.
  • Environmental noise prognosis of scenarios including novel aircraft designs.
  • Provision of possible measures to mitigate noise levels in the vicinity of airports.
  • Investigation of appropriated quantitative metrics with regard to their ability to account for human annoyance to aircraft noise.

Details of the project

Members

Institute for Acoustics

  • Prof. Dr.-Ing. Sabine C. Langer: Principal investigator
  • Dr.-Ing. Tobias Ring: Project supervisor
  • M.Sc. Gil Felix Greco: Ph.D. researcher
  • M.Sc. Shreyas Mysore Guruprasad: Researcher
Publications
  • Felix Greco, G.; Wienke, F.; Bertsch, L.; Ring, T.P.; Langer, S.C. Assessing the environmental noise of next-generation regional jet aircraft concepts in a generic airport scenario. In Proceedings of the 24th International Congress on Acoustics, Gyeongju, Korea, 24–28 October 2022.
  • Felix Greco, G.; Yildiz, B.; Göing, J.; Ring, T.P.; Feuerle, T.; Hecker, P.; Langer, S.C. Environmental Noise Assessment of Holding Approach Procedures Using a Multi-Level Simulation Framework. Aerospace 2022, 9, 544. https://doi.org/10.3390/aerospace9100544
  • Felix Greco, G.; Mysore Guruprasad, S.; Ring, T. P.; Langer, S. C. The impact of the COVID–19 outbreak on the air traffic noise at the Hannover airport region. J. Acoust. Soc. Am. 2022, 152, 1564-1572. https://doi.org/10.1121/10.0013889
  • Felix Greco, G.; Wienke, F.; Bertsch, L., Zellmann, C.; Schäffer, B.; Ring, T. P.; Langer, S. C. A comparative study of semi–empirical noise emission models based on the PANAM and sonAIR aircraft noise simulation tools. In Proceedings of the INTER–NOISE and NOISE–CON Congress, the 51st International Congress and Exhibition on Noise Control Engineering, Glasgow, Scotland, 21–24 August 2022. Institute of Noise Control Engineering: Reston, VA, USA, 2022.
  • Mysore Guruprasad, S.; Felix Greco, G.; Ring, T. P.; Langer, S. C. A quantitative approach to density–based clustering of flight trajectories for efficient air traffic noise simulations. In Proceedings of the INTER–NOISE and NOISE–CON Congress, the 51st International Congress and Exhibition on Noise Control Engineering, Glasgow, Scotland, 21–24 August 2022. Institute of Noise Control Engineering: Reston, VA, USA, 2022.
  • Felix Greco, G.; Bertsch, L.; Ring, T.P.; Langer, S.C. Sound quality assessment of a medium-range aircraft with enhanced fan-noise shielding design. CEAS Aeronaut. J. 2021, 12, 481-493. https://doi.org/10.1007/s13272-021-00515-9
  • Delfs, J.; Bertsch, L.; Zellmann, C.; Rossian, L.; Kian Far, E.; Ring, T.; Langer, S.C. Aircraft Noise Assessment – From Single Components to Large Scenarios. Energies 2018, 11, 429. https://doi.org/10.3390/en11020429

Contact

Project lead

Prof. Dr.-Ing. Sabine C. Langer

Institute for Acoustics

Tel: +49 531 391-8770
Fax: +49 531 391-8789
  s.langer(at)tu-braunschweig.de

 

Organisation

Institute for Acoustics

Institute for Acoustics

Technical University of Braunschweig
Langer kamp 19
38106 Braunschweig, Germany

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