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Experimental investigation of high-power laser irradiation of missile materials in subsonic and supersonic flows

Schäffer, Sebastian und Allofs, Dirk und Gruhn, Patrick und Gülhan, Ali und Lück, Martin und Osterholz, Jens (2022) Experimental investigation of high-power laser irradiation of missile materials in subsonic and supersonic flows. In: High-Power Lasers and Technologies for Optical Countermeasures 2022, 12273. SPIE Security + Defence 2022, 2022-09-05 - 2022-09-07, Berlin, Germany. doi: 10.1117/12.2647841. ISBN 978-1-5106-5550-8. ISSN 0277-786X.

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Offizielle URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12273/2647841/Experimental-investigation-of-high-power-laser-irradiation-of-missile-materials/10.1117/12.2647841.full?SSO=1

Kurzfassung

The technology of missiles and of their countermeasures is evolving continuously. High-power lasers are an option to encounter these threats. In order to understand their potential in such a scenario, it is vital to investigate the laser effects in the presence of a corresponding aerodynamic environment. Thus, experimental and numerical investigations were conducted cooperatively by Fraunhofer Ernst-Mach-Institut and the supersonic and hypersonic technologies department of DLR. An ytterbium fiber laser system was installed at the supersonic wind tunnel VMK. The laboratory was fit to meet necessary laser safety requirements. Combined subsonic and supersonic flow and high-power laser experiments with flow velocities up to a Mach number of three and a laser power up to 10 kW were realized. Two kind of tests were performed, focusing on laser beam distortion through aero-optical effects and on high-power laser effects, respectively. The interaction effects between aerodynamics, laser radiation and irradiated targets were studied on flat-plates as well as cylindrical and radome targets, simulating generic missile design. Irradiated objects consisted of steel, aluminum, carbon-fiber-reinforced polymer and the ceramic-based composite WHIPOX. While beam distortions were studied with a wavefront sensor, damaging processes were investigated by measuring the perforation time of the targets, as well as via high-speed imaging, thermography as well as Schlieren imaging. Numerical three-dimensional, steady, and uncoupled simulations were performed. The data indicated complex interactions between material, laser beam, and aerodynamics. This investigation can be used as an initial basis for further analysis of laser-material-aerodynamic interactions with respect to missile defense.

elib-URL des Eintrags:https://elib.dlr.de/189670/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Experimental investigation of high-power laser irradiation of missile materials in subsonic and supersonic flows
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Schäffer, SebastianFraunhofer Ernst-Mach-Institut, FhG EMINICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Allofs, DirkDirk.Allofs (at) dlr.dehttps://orcid.org/0000-0002-3776-1853NICHT SPEZIFIZIERT
Gruhn, Patrickpatrick.gruhn (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Gülhan, AliAli.Guelhan (at) dlr.dehttps://orcid.org/0000-0003-4905-5881NICHT SPEZIFIZIERT
Lück, MartinFraunhofer Ernst-Mach-Institut, FhG EMINICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Osterholz, JensFraunhofer Ernst-Mach-Institut, FhG EMINICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2 November 2022
Erschienen in:High-Power Lasers and Technologies for Optical Countermeasures 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:12273
DOI:10.1117/12.2647841
Name der Reihe:Proceedings of SPIE
ISSN:0277-786X
ISBN:978-1-5106-5550-8
Status:veröffentlicht
Stichwörter:Supersonic, Subsonic, Missile Defence, High Power Laser, Laser Defence, Material-Flow-Beam Interaction, Experimental, Numerical
Veranstaltungstitel:SPIE Security + Defence 2022
Veranstaltungsort:Berlin, Germany
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:5 September 2022
Veranstaltungsende:7 September 2022
HGF - Forschungsbereich:keine Zuordnung
HGF - Programm:keine Zuordnung
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L DT - Verteidigungstechnologie
DLR - Teilgebiet (Projekt, Vorhaben):L -  Wirkung
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien, KP
Hinterlegt von: Allofs, Dirk
Hinterlegt am:24 Nov 2022 10:33
Letzte Änderung:28 Mai 2024 10:33

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