4:00 PM - 4:20 PM
*Christopher Groll1,2,Tobias Traudt2, Michael Oschwaldt2, Stefan Schlechtriem2, Armin Herbertz3 ( 1. University of Stuttgart, Institute of Space Systems, Germany, 2. German Aerospace Center, Institute of Space Propulsion, Germany, 3. European Space Agency, ESTEC, Netherlands)