Dieses Bild zeigt Stefan Löhle

Stefan Löhle

Herr Dr.-Ing.

Akademischer Oberrat
Institut für Raumfahrtsysteme

Kontakt

+49 711 685 62387
+4971168563596

Pfaffenwaldring 29
70569 Stuttgart
Deutschland
Raum: Halle 3 L113 / 1-713

Sprechstunde

immer (24/7)

Fachgebiet

In der Arbeitsgruppe Diagnostik hochenergetischer Strömungen befassen wir uns mit der Entwicklung und Anwendung von Messtechniken für hochenthalpe Strömungen. Dazu gehören hauptsächlich optische Messmethoden, wie optische Emissionsspektroskopie, Absorptionsspektroskopie, laserinduzierte Fluoreszenzmessungen und interferometrische Messungen. Darüberhinaus beschäftigen wir uns mit inversen Problemen, beispielsweise bei der Bestimmung von Wärmestromdichten auf Materialoberflächen aus eingebauten Temperatursensoren. Details zu den Arbeiten sind auf der entsprechenden Gruppenseite zu finden: Diagnostik hochenthalper Strömungen

High Enthalpy Flow Diagnostics:

Since 2008, I have been heading the plasma wind tunnel laboratory at Institute of Space Systems at the University of Stuttgart with 10 large-scale research facilities. My research group High Enthalpy Flow Diagnostics (www.hefdig.com) with five PhD students and one Post-doc focuses on the development and application of diagnostic methods for the characterisation of high enthalpy flows. With my team I successfully observed the re-entry of the European ISS-resupply spacecraft ATV-1 in 2008. I participated in an international team for the search of meteorite fragments (2008 TC3) in the Nubian Desert in 2009, and I was Principle Investigator of a new instrument with which we successfully observed the re-entry of the Japanese sample return capsule Hayabusa in 2010. Currently, I am leading the development of two sounding rocket flight experiments to analyse atomic oxygen in the upper atmosphere, with a first successful flight in June 2013. I was awarded science team lead of the observation campaign of the ATV-5 in 2015 (cancelled, see atv5.seti.org). In 2015 I was participating in the observation of WT1190F and my team observed the CYGNUS OA6 re-entry in June 2016. I have published 54 journal articles and participated in more than 130 conference papers.

insgesamt 54 Zeitschriftenartikel, hier eine Auswahl jüngster Resultate:

Rudawska, R., J. Zender, D. Koschny, H. Smit, S. Loehle, F. Zander, M. Eberhart, A. Meindl
I. Uriarte Latorre, A spectroscopy Pipeline for the Canary Island Long Baseline Observatory Meteor
Detection System, Planetary and Space Science, 104773, 2019.
Eberhart, M. S. Loehle, Light-Field Imaging for Plasma Wind Tunnel Application, Journal of Thermophysics and Heat Transfer, 33(2):1–9, 2018

Löhle, S., Derivation of the non-integer system identification method for the adiabatic boundary condition using Laplace transform, International Journal of Heat and Mass Transfer, 2017, in press, doi: 10.1016/j.ijheatmasstransfer.2017.08.007

Löhle, S., Zander, F., Hermann, T., Eberhart, M., Meindl, A., Oefele, R., Vaubaillon, J., Colas, F., Vernazza, P., Drouard, A., Gattacceca, J., Experimental Simulation of Meteorite Ablation during Earth Entry using a Plasma Wind Tunnel, The Astrophysical Journal, 2017, Vol. 837, No.2, doi: 10.3847/1538-4357/aa5cb5

Zander, F., Löhle, S., Hermann, T., Fulge, H., Fabry-Perot Spectroscopy for Kinetic Temperature and Velocity Measurements of a High Enthalpy Air Plasma Flow, Journal of Physics D, in press, doi: 10.1088/1361-6463/aa7b0c

Löhle, S., Schweikert, S., von Wolfersdorf, J., Surface Heat Flux Determination of a Transpiration Cooled Wall from Pressure Data, AIAA Journal of Thermophysics and Heat Transfer, 2016, in press, doi: 10.2514/1.T4815

Eberhart, M., Löhle, S., Steinbeck, A., Binder, T., Fasoulas, S., Measurement of atomic oxygen in the middle atmosphere using solid electrolyte sensors and catalytic probes, Atmospheric Measurement Techniques, Vol. 8, No.9, 2015, doi:10.5194/amt-8-3701-2015

Hermann, T., S. Loehle, F. Zander, H. Fulge S. Fasoulas, Characterization of a Re-entry Plasma Wind Tunnel Flow with Vacuum Ultraviolet to Near Infrared Spectroscopy, Journal of Thermophysics and Heat Transfer, 30(3):673–688, 2016.

Löhle, S., Jenniskens, P., High Resolution Spectroscopy of the Hayabusa Re-entry using Fabry-Perot Interferometry, AIAA Journal of Spacecrafts and Rockets, 2014, in print

Marynowski, T., Löhle, S., Fasoulas, S., Investigation of a CO 2 Inductively Coupled Plasma, AIAA Journal of Thermophysics and Heat Transfer, 2013, in print, doi: 10.2514/1.T4223

Kraetzig, B., Löhle, S., Buttsworth, D., Hayabusa Radiation Data Analysis and Heat Shield Performance Investigation, AIAA Journal of Spacecraft and Rockets, 2013, accepted

Löhle, S., Fuchs, U., Digel, P., Hermann, T., Battaglia, J.-L., Analysing Inverse Heat Conduction Problems by the Analysis of the System Impulse Response, Inverse Problems in Science and Engineering, doi:10.1080/17415977.2013.780170, 2013

Löhle, S., Mezger, A., Fulge, H., Measured Surface Temperatures of the Hayabusa Capsule during Re-entry Determined from Ground Observation, Acta Astronautica, Vol. 84, doi: 10.1016/j.actaastro.2012.11.004, 2013

Löhle, S., Lein, S. Simultaneous Translational Temperature Measurements of Different Atomic Species in Plasma Flows Using Scanning Fabry-Perot Interferometry, Review of Scientific Instruments, 83(5):053111, 2012

 

Messverfahren für strömende Plasmen (üblicherweise im Wintersemester)

 

seit 2010     Gruppenleiter Diagnostik hochenergetischer Strömungen

seit 2008     Laborleiter am Institut für Raumfahrtsysteme

2007           Post-Doc am Institut für Verbrennungstechnik des Deutschen Zentrums für Luft- und Raumfahrt

2006           Post-Doc am Laboratoire TREFLE in Zusammenarbeit mit EADS Astrium in Bordeaux, Frankreich

2006           Promotion am Institut für Raumfahrtsysteme

2001           Diplom Luft- und Raumfahrttechnik

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