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  • SE²A - Sustainable and Energy-Efficient Aviation
  • Research
  • ICA B "Flight Physics and Vehicle Systems"
Logo Sustainable and Energy Efficient Aviation of TU Braunschweig
B3.1 - Global and Local Design Methodology for Laminar Flow Control
  • ICA B "Flight Physics and Vehicle Systems"
    • B5.2 - Application of physics-based finite-element tools in stiffness tailored structures for cryogenic hydrogen storage for improved mechanical and thermo-mechanical response
    • B4.2 - Consistent Multilevel Model Coupling and Knowledge Representation in Multidisciplinary Analysis and Design
    • B4.1- Collaborative Multidisciplinary Structural Design and Thermal Management for Electric Aircraft
    • B3.5 - Production technologies for hybrid suction designs - Bonding of micro-perforated sheets for hybrid laminar flow control suction panels
    • B3.2 - Advancing the additive xHLFC suction panel concept towards wind-tunnel readiness
    • B3.1 - Protective, multifunctional suction shells for hybrid laminar flow control: Design, integration, simulation and testing
    • B2.5 - EverScale - Enhancement and verification of load alleviation technologies by subscale flight testing
    • B2.4- Hybrid load alleviation by fluidic/reversed control and nonlinear structures
    • B2.3 - ARGO2 - Integrated design of control methods for stability of elastic aircraft
    • B1.9 - Validation of turbulent boundary layer-induced sound transmission through a fuselage section
    • B1.8 - Wind-tunnel experiments of advanced design of swept-wing with suction surfaces
    • B1.7 - Extension of Correlation-based Transition Transport Models for Laminar Aircraft Design
    • B1.6 - Effective Design Methods and Design Exploration for Laminar Wing and Fuselage
    • B1.5 - Sensitivities of Laminar Suction Boundary Layers for Large Reynolds Numbers
    • B1.3- Physics of broadband noise of sound sources from installed propulsors
    • JRG-B1 - Physics of Laminar Wing and Fuselage
    • JRG-B2 - Flow Physics of Load Reduction
    • B1.1 - Propeller and wing aerodynamics of distributed propulsion
    • B1.2 - Aerodynamic analysis of partly embedded boundary layer ingesting propulsors
    • B1.3 - Fast non empiric prediction of propulsion installation related noise
    • B1.4 - Transition Prediction and Design of Hybrid Laminar Flow Control on Blended Wing Bodies Based on 3D Parabolized Stability Equations
    • B2.1 - Load reduction potential of nonlinear stiffness and damping technologies
    • B2.2 - Structural technologies enabling load alleviation
    • B2.3 - Active load Reduction for enabling a 1-G wing using fOrward-looking and distributed sensors (ARGO)
    • B2.4 - Morphing structures for the 1g-wing
    • B3.1 - Global and Local Design Methodology for Laminar Flow Control
    • B3.2 - Process simulation and multiscale manufacturing of suction panels for laminar flow control
    • B3.3 - Thin Plies in Application for Next Generation Aircraft (TANGA)
    • B3.4 - New methods for failure and fatigue analysis of suction panels for laminar flow control
    • B5.1 - ADEMAO: Aircraft Design Engine based on Multidisciplinary Analysis and Optimization
    • JRG-B5 - Long-Range Aircraft Configurations and Technology Analyses
    • JRP - Permeation assessment for cryogenic applications by means of Fiber Bragg Grating sensors
    • ⯇ back to research

B3.1 - Global and Local Design Methodology for Laminar Flow Control

General objective of this research project

The research project B3.1 deals with the structural wing design for aircraft with active laminar flow control technology, which is one of the most promising approaches for aircraft drag reduction. In the scope of SE2A laminar flow control through boundary layer suction is investigated. The objective of this project is to provide a concept for the structural design of a suction panel and its integration into the wing structure.

 

Schematischer Aufbau eines Suction Panels

Wing design under hybrid laminar flow conditions

The global wing design aims at minimizing the structural mass while at the same time providing a maximum of laminar flow percentage. Unconventional designs like BWB, and unconventional energy storage and power trains are taken into account as well as the benefits offered by advanced materials and manufacturing processes. The impact of laminar flow control on the structural wing design is investigated and parameters for a reduced order model are being derived.

Suction panel

A detailed design concept of a suction panel for active laminar flow control in sandwich design is being developed in accordance to the requirements of the global wing design. Herein novel design technologies like plastic and metal 3D-printing offer a huge potential regarding functional integration and integral part design. To benefit from this extended freedom in design, it is being investigated whether it is possible to manufacture both the porous extraction layer and the core structure of the extraction panels using 3D printing.

The suction panels have to provide changeability for maintenance and repair. Therefore, detachable interfaces between the aerodynamic as well as load-bearing skin of the wing and the suction panel are required. As these joints are supposed to maintain laminar flow, they have to comply with minimum tolerances regarding gaps, steps and waviness under continuous deformations of the wing in cruise conditions. To take stress concentrations revealed by numerical stress prediction into account, experimental coupon tests are being conducted. The overall wing design will be translated into a functional demonstrator, taking into account the critical loads occurring during flight.

 

Details of the project

Scientific Staff
Wolff

 

Johannes Wolff

Institute of Adaptronics and Function Integration

Tel: (0531) 391-8070

Email: j.wolff(at)tu-braunschweig.de

 

Lobitz

 

Lennart Lobitz

Institute of Aircraft Design and Lightweight Structures

Tel: (0531) 391-9957

Email: l.lobitz(at)tu-braunschweig.de

Student projects

Vorüberlegungen zur Auslegung eines Absaugepaneels zur Laminarhaltung in Sandwichbauweise

Contact

Project Lead

Prof. Peter Horst


Institute of aircraft design and lightweight structures
+49 531-391-9901

 

Organisation

Institute of aircraft design and lightweight structures

Technische Universität Braunschweig
Hermann-Blenk-Str. 35
D-38108 Braunschweig

Prof. Christian Hühne

Institute of Adaptronics and Function Integration
+49 531-391- 8054

 

Institute of Adaptronics and Function Integration

Technische Universität Braunschweig
Langer Kamp
D-38106 Braunschweig

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Contact information

Cluster of Excellence SE²A –
Sustainable and Energy-Efficient Aviation
Technische Universität Braunschweig
Hermann-Blenk-Str. 42
38108 Braunschweig

se2a(at)tu-braunschweig.de
+49 531 391 66661

 

 

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