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Experimental and numerical studies of MHD effects on plasma flows for re-entry applications
Institute of Space Systems (IRS), University of Stuttgart, Pfaffenwaldring 29, Baden-Württemberg, Stuttgart, Germany.
Institute of Space Systems (IRS), University of Stuttgart, Pfaffenwaldring 29, Baden-Württemberg, Stuttgart, Germany.
Institute of Space Systems (IRS), University of Stuttgart, Pfaffenwaldring 29, Baden-Württemberg, Stuttgart, Germany.
Institute of Space Systems (IRS), University of Stuttgart, Pfaffenwaldring 29, Baden-Württemberg, Stuttgart, Germany.
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2021 (English)In: IAC 2021 Congress Proceedings, 72nd International Astronautical Congress (IAC), Dubai, United Arab Emirates, International Astronautical Federation, IAF , 2021, article id 65321Conference paper, Published paper (Refereed)
Abstract [en]

The design of safe heat flux control devices is fundamental for the success of a space mission that involves atmospheric re-entry. The development of the superconductive coil technology in recent years allows the exploitation of magnetohydrodynamics (MHD) effects as thermal protection system. Thus, experimental and numerical campaigns to assess these effects are needed, in order to provide a proven scientific base for future works in this field. Experiments involving a simplified test case with an argon plasma flow with different magnets configurations have been carried out in the plasma wind tunnel PWK1 at the Institute of Space Systems (IRS). The optical and emission spectroscopy measurements have shown that the magnetic field increases the emissions of the ionized argon particles and the shock stand-off distance. The test conditions have been emulated at the Center of Astrophysics, Space Physics and Engineering Research (CASPER) and a particle tracking technique was used to obtain an electric field force map. This experiment has shown that the electric field induced in the plasma by the applied magnetic field is strong enough to transport the ions towards to cusp region, in accordance with the highest emission intensity detected at IRS. The test case has been rebuilt with the IRS in-house code Self and Applied Field MPD thruster algorithm (SAMSA) and the numerical results have been validated against the experimental results. Further simulations with highest magnetic flux densities have been performed and a polynomial describing the behaviour of the shock distance has been obtained.

Place, publisher, year, edition, pages
International Astronautical Federation, IAF , 2021. article id 65321
Keywords [en]
argon plasma, atmospheric re-entry, magnetohydrodynamics (MHD), micro-particle tracking, SAMSA
National Category
Astronomy, Astrophysics and Cosmology Fusion, Plasma and Space Physics
Research subject
Onboard space systems
Identifiers
URN: urn:nbn:se:ltu:diva-90310Scopus ID: 2-s2.0-85127378770OAI: oai:DiVA.org:ltu-90310DiVA, id: diva2:1659975
Conference
72nd International Astronautical Congress (IAC), Dubai, United Arab Emirates, October 25-29, 2021
Funder
EU, Horizon 2020, 899298Available from: 2022-05-23 Created: 2022-05-23 Last updated: 2022-10-24Bibliographically approved

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Laufer, Rene

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