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Actuation System for Effective Flow Control of an Internally Blown Coanda Flap

Wierach, Peter and Petersen, Jan and Behr, Christian and Sinapius, Michael (2021) Actuation System for Effective Flow Control of an Internally Blown Coanda Flap. In: Fundamentals of High Lift for Future Civil Aircraft Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 145 (1). Springer International Publishing. doi: 10.1007/978-3-030-52429-6. ISBN 978-3-030-52428-9.

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Official URL: https://www.springerprofessional.de/actuation-system-for-effective-flow-control-of-an-internally-blo/18495312


The focus of the work is on the evaluation, development and integration of a robust actuator system for three-dimensional flow control of a blown Coanda flap to improve the high lift system of commercial aircraft. As part of the research work presented, the system is integrated into a wind tunnel model in order to demonstrate its functionality under aerodynamic loads. The system is based on individual bending transducers that can vary the height of the blowing slot dynamically. There are 33 actuated segments to implement static and dynamic actuation along the wing span (3D-actuation). All segments can be controlled independently and thus offer great optimization potential for an effective flow control. The first aerodynamic results show an increase in lift of up to ∆Cl = 0.57. These aerodynamic gains are achieved at amplitudes that do not require the lip segments to completely close or open the blowing slot, which shows the advantage of the current lip design that enables activation with independently controlled stationary and unsteady components.

Item URL in elib:https://elib.dlr.de/140065/
Document Type:Contribution to a Collection
Title:Actuation System for Effective Flow Control of an Internally Blown Coanda Flap
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wierach, PeterDLR BraunschweigUNSPECIFIED
Petersen, JanDLR BraunschweigUNSPECIFIED
Behr, ChristianDLR BraunschweigUNSPECIFIED
Sinapius, MichaelTechnische Universität BraunschweigUNSPECIFIED
Journal or Publication Title:Fundamentals of High Lift for Future Civil Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/978-3-030-52429-6
EditorsEmailEditor's ORCID iD
Radespiel, RolfTechnische Universität BraunschweigUNSPECIFIED
Semaan, RichardTechnische Universität BraunschweigUNSPECIFIED
Publisher:Springer International Publishing
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:Active Flow Control, Smart Materials, High Lift, Piezoelectric Actuators
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Wierach, Peter
Deposited On:13 Jan 2021 12:55
Last Modified:10 Feb 2021 12:38

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