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Multibody aerothermodynamics of space debris fragments

Gülhan, Ali und Willems, Sebastian und Schleutker, Thorn (2016) Multibody aerothermodynamics of space debris fragments. VKI Lecture Series STO-AVT-262: Space debris reentry and mitigation, 12.-14. Sep. 2016, Rhode-St-Genèse, Belgien.

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Kurzfassung

Due to the increasing space transportation activities and possible entry of the Near-Earth-Objects at very high velocities space debris became an issue of safety for our Earth. In order to satisfy the new requirement concerning risk mitigation of space debris, the design of the flight hardware has to consider a complete demise of the objects during atmospheric re-entry. Since the size, geometry, break-up-altitude and interaction of the space object have an influence on the ground impact, dedicated characterization tests are necessary. The evolution of the demise process and formation of fragments has a big influence on the prediction of the ground impact. The available numerical tools have still significant shortcomings in correct physical modelling of the demise and multibody interaction. In order to characterize proposed demise solutions and to create a reliable experimental data base the Supersonic and Hypersonic Technologies Department of DLR developed unique experimental skills. Both arc heated facilities L2K and L3K are qualified for demise testing at critical trajectory points of re-entry objects. The prediction of aerothermodynamic behaviour of space debris and their interaction with each other is another challenging task. Such objects may have complex non-aerodynamic shapes. Therefore the determination of aerodynamic and thermal behaviour of multi bodies requires an upgrade or development of new experimental and numerical tools. Since the standard aerodynamic measurement technique using high precision six component balances would cause undesired limitations with respect to the multi body motion, a new approach of free flight of multiple bodies in the hypersonic wind tunnel H2K has been developed. Experimental results on single and multi-bodies show significant differences in the aerothermodynamic process, which leads to differences in the demise behaviour, fragmentation and ground impact.

elib-URL des Eintrags:https://elib.dlr.de/110295/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Multibody aerothermodynamics of space debris fragments
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Gülhan, AliAli.Guelhan (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Willems, SebastianSebastian.Willems (at) dlr.dehttps://orcid.org/0000-0002-5576-7829NICHT SPEZIFIZIERT
Schleutker, Thornthorn.schleutker (at) dlr.dehttps://orcid.org/0000-0002-1833-2850NICHT SPEZIFIZIERT
Datum:September 2016
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:space debris, multibody, aerothermodynamics, demise
Veranstaltungstitel:VKI Lecture Series STO-AVT-262: Space debris reentry and mitigation
Veranstaltungsort:Rhode-St-Genèse, Belgien
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:12.-14. Sep. 2016
Veranstalter :von Karman Institute for Fluid Dynamics
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Raumtransport
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Willems, Sebastian
Hinterlegt am:06 Jan 2017 11:30
Letzte Änderung:29 Mär 2023 00:07

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