München 2009 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 14: Experimente zur Gravitation I
GR 14.6: Talk
Thursday, March 12, 2009, 19:05–19:25, A214
Mission simulation and free fall payload tests for MICROSCOPE — •Hanns Selig, Meike List, and Stefanie Bremer — ZARM, Universität Bremen, Bremen, Deutschland
MICROSCOPE is a french space mission for testing the equivalence principle in space. The mission goal is the determination of the Eötvös parameter eta with an accuracy of 10−15. The launch is sheduled for 2012. As a member of the MICROSCOPE performance team, ZARM performs free fall drop tower tests of the MICROSCOPE differential accelerometers as well as mission simulations and the preperation of the mission data analysis in close cooperation with the french partners CNES, ONERA and OCA.
The free fall tests are essential for the validation of the sensor performance. The mission simulation includes satellite and test mass dynamics as well as interactions between the spacecraft and the orbital environment. The project concepts and current results of the free fall tests (MICROSCOPE accelerometer engineering model) and current simulation results of the influence of different mission parameters on the satellite and test mass dynamics are presented.