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Martian flow characterization using tunable diode laser absorption spectroscopy, in high enthalpy facilities

Salvi, Ciro and Steffens, Lars and Hohn, Oliver and Gülhan, Ali and Maggi, Filippo (2023) Martian flow characterization using tunable diode laser absorption spectroscopy, in high enthalpy facilities. Acta Astronautica, 213, pp. 204-214. Elsevier. doi: 10.1016/j.actaastro.2023.08.043. ISSN 0094-5765.

[img] PDF - Only accessible within DLR bis December 2025 - Published version

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0094576523004502?via%3Dihub


This research aims at analyzing thermo-chemical properties of the hypersonic high-enthalpy flow in the L2K wind tunnel, situated in Köln at the German Aerospace Center (DLR). In the L2K wind tunnel, Martian atmosphere can be created, and the facility can simulate heat load conditions encountered during atmospheric entry of Martian missions. The focus of this project is the analysis of the non-intrusive experimental technique ‘‘Tunable Diode Laser Absorption Spectroscopy’’ (TDLAS), based on line of sight absorption spectroscopy, and applied to hypersonic flow. A simplified Martian atmosphere (97% CO2 and 3% N2) was used. A new interpretation for CO-TDLAS experimental technique applied to hypersonic wind tunnel flow analysis was developed. Numerical simulations with the DLR-TAU non-equilibrium flow solver were used as support of this analysis, and match between simulations and experiments was observed. Flow speed and absorption line’s width were measured, and the knowledge of L2K’s flow structure was extended.

Item URL in elib:https://elib.dlr.de/199191/
Document Type:Article
Title:Martian flow characterization using tunable diode laser absorption spectroscopy, in high enthalpy facilities
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Salvi, CiroUNSPECIFIEDhttps://orcid.org/0000-0002-4185-1042148696697
Steffens, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-2561-0687UNSPECIFIED
Hohn, OliverUNSPECIFIEDhttps://orcid.org/0000-0002-4225-7352UNSPECIFIED
Gülhan, AliUNSPECIFIEDhttps://orcid.org/0000-0001-7460-0576UNSPECIFIED
Date:3 September 2023
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 204-214
Keywords:TDLAS, DLAS, Non intrusive, Hypersonic, High enthalpy, Arc-heated wind tunnel, Mars
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Salvi, Ciro
Deposited On:14 Dec 2023 09:00
Last Modified:29 Jan 2024 12:36

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