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Objectives of Laser-Induced Energy Deposition for Active Flow Control

Sperber, David and Eckel, Hans-Albert and Steimer, Siegfried and Fasoulas, Stefanos (2012) Objectives of Laser-Induced Energy Deposition for Active Flow Control. In: Contrib. Plasma Phys., 52 (7), pp. 634-641. Wiley-VCH Verlag GmbH & Co.. 15. Fachtagung Plasmatechnologie (PT15), 28. Feb. - 02. Mrz. 2011, Stuttgart, Deutschland.

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A highly concentrated energy deposition has been proposed for a flow control concept in super- and hypersonic transportation. The plasma source can be implemented by laser-, microwave- or DC-discharge phenomena in the flow field upstream of a blunt body. In a wide range of Mach numbers the thermal modification of the gas condition mitigates the strength of the shock waves and improves the aerodynamic performance. This paper presents a discussion of the methodology and objectives of laser-induced energy deposition particularly with regard to the generation of laser-sustained plasma in supersonics. A steady-state argon plasma is maintained by an intensity field in the focal region of a continuous wave laser. The experimental results using drag, laser energy transmission and plasma radiation measurements determine the requirements for laser-sustained plasma and validate the control authority of this concept.

Document Type:Conference or Workshop Item (Paper)
Title:Objectives of Laser-Induced Energy Deposition for Active Flow Control
AuthorsInstitution or Email of Authors
Eckel, Hans-AlbertUNSPECIFIED
Steimer, SiegfriedUNSPECIFIED
Fasoulas, StefanosUNSPECIFIED
Date:17 February 2012
Journal or Publication Title:Contrib. Plasma Phys.
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 634-641
Publisher:Wiley-VCH Verlag GmbH & Co.
Keywords:laser-induced energy deposition, laser-sustained plasma, wave drag reduction
Event Title:15. Fachtagung Plasmatechnologie (PT15)
Event Location:Stuttgart, Deutschland
Event Type:national Conference
Event Dates:28. Feb. - 02. Mrz. 2011
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: David Sperber
Deposited On:16 Jul 2012 09:22
Last Modified:16 Jul 2012 09:22

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