Objectives of Laser‐Induced Energy Deposition for Active Flow Control | Zendy

Sperber D. | Zendy; Eckel H.A. | Zendy; Steimer S. | Zendy; Fasoulas S. | Zendy

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Objectives of Laser‐Induced Energy Deposition for Active Flow Control

Author(s) -

Sperber D.,

Eckel H.A.,

Steimer S.,

Fasoulas S.

Publication year - 2012

Publication title -

contributions to plasma physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.531

H-Index - 47

eISSN - 1521-3986

pISSN - 0863-1042

DOI - 10.1002/ctpp.201210060

Subject(s) - laser , plasma , hypersonic speed , shock wave , materials science , mach number , deposition (geology) , aerospace engineering , flow control (data) , shock (circulatory) , optics , physics , mechanics , computer science , telecommunications , geology , medicine , paleontology , engineering , quantum mechanics , sediment

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 (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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