SFB 880:  Fundamentals of High Lift for Future Civil Aircraft

• Subject Area: Computer Science, Systems and Electrical Engineering ; Mechanical and Industrial Engineering ; Materials Science and Engineering ; Thermal Engineering/Process Engineering
• Term: from 2011 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 133733460

The analysis of current commercial transport aircraft capabilities stipulate the need for new high-lift systems that cannot be achieved with existing industrial development processes. This extends to the fields of aircraft noise reduction and of scalability of high-lift performance parameters at take-off and landing. In the long term, the research leads to the technological fundamentals of a new segment of low-noise commercial transport aircraft suitable for short runways, which allows a seamless integration into metropolitan regions. During its first two funding periods, the Collaborative Research Centre (CRC 880) has researched fundamen-tal principles for reducing flow noise over wings using porous surface materials, and for attenuating propul-sion noise by configuration design. Furthermore, aerodynamic and structural fundamentals for designing wings with active flow control, as well as new flight mechanics and aeroelastic numerical models for analyz-es of the aircraft were developed. These results highlighted the need for an in-depth design and integrated system analyses of noise reduction and of the high-lift system performance. These objectives are accom-plished by implementing the newly-developed noise prediction methods into a design and optimization framework, and by deepening and validating the propulsion and cabin noise analyses. The aero-acoustic approaches and the newly developed multidisciplinary methods for increasing the active high-lift efficiency will be combined through a large-scale wind tunnel test, which also aims at demonstrating the function and synergies of the high-lift system at flight-relevant flow conditions. The flight dynamics research will be deepened through aero-elastic simulations at the overall aircraft level, and by flight mechanical analyses. The SFB-developed flight mechanical simulation models and flight control methods enable the assessment of active high-lift for different aircraft configurations.

• DFG Programme: Collaborative Research Centres

Completed projects

• A01 - Simulation of airframe noise generation and reduction with porous materials for high lift systems (Project Heads Delfs, Jan Werner ;  Ewert, Roland )
• A03 - Aerodynamic and aero acoustic investigation of embedded engines (Project Heads Delfs, Jan Werner ;  Friedrichs, Jens ;  Hepperle, Martin ;  Kozulovic, Dragan ;  Rudnik, Ralf )
• A04 - Production and characterization of porous materials with tailored acoustic and mechanical properties (Project Head Rösler, Joachim )
• A05 - Numerical modeling of pore scale flow and acoustics in and around porous materials for high Reynolds numbers and validation (Project Head Krafczyk, Manfred )
• A06 - Origin and prediction of cabin noise due to structure-borne sound (Project Heads Delfs, Jan Werner ;  Langer, Sabine C. ;  Sinapius, Michael )
• A08 - Scale-resolving simulations of aeroacoustic sound from Coanda flaps (Project Heads Akkermans, Rinie Adrianus Dejan ;  Ewert, Roland )
• B01 - Aerodynamic analysis of conditioned Coanda-jets for lift control (Project Heads Radespiel, Rolf ;  Semaan, Richard )
• B02 - Adaptive systems for flow sensing and control (Project Heads Büttgenbach, Stephanus ;  Dietzel, Andreas ;  Leester-Schädel, Monika ;  Sinapius, Michael ;  Wierach, Peter )
• B03 - Structural analysis for the design and realization of a flexible, gap and stepless wing leading edge device for high lift applications (Project Heads Horst, Peter ;  Monner, Hans Peter )
• B04 - Compact dynamic compressors for active flow control in autonomous high lift configurations (Project Heads Mertens, Axel ;  Ponick, Bernd ;  Seume, Jörg )
• B05 - Numerical modelling of flows over porous surfaces at high Reynolds numbers and validation (Project Head Radespiel, Rolf )
• B06 - Investigation of intake and propulsion system for high-lift aircraft (Project Heads Friedrichs, Jens ;  Hennings, Holger ;  Wulff, Detlev )
• C01 - Dynamics of lift generation (Project Heads Rossow, Cord-Christian ;  Rudnik, Ralf )
• C02 - Concepts and strategies for control of aircraft with highly cross-coupled characteristics of propulsion and high-lift systems (Project Head Hahn, Klaus-Uwe )
• C03 - Structural design and aeroelasticity of wings with active high lift systems (Project Heads Dinkler, Dieter ;  Haupt, Matthias ;  Zilian, Andreas )
• C04 - Uncertainties quantification in models for high-lift simulations (Project Head Matthies, Hermann Georg )
• MGK - Integrated Research Training Group (Project Head Langer, Sabine C. )
• V - Central Administration and duties of SFB (Project Head Radespiel, Rolf )
• Z - Multidisciplinary Aircraft Design and Technology Assessment (Project Heads Bertsch, Lothar ;  Heinze, Wolfgang ;  Radespiel, Rolf )

• Applicant Institution: Technische Universität Braunschweig
• Participating University: Gottfried Wilhelm Leibniz Universität Hannover
• Participating Institution: Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR); Standort Braunschweig; Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR); Standort Göttingen
• Spokesperson: Professor Dr.-Ing. Rolf Radespiel