ARPS: an Advanced Radio Isotope Power Subsystem for ExoMars Geophysical Package (GEP)

Details ARPS: an Advanced Radio Isotope Power Subsystem for ExoMars Geophysical Package (GEP) ARPS: an Advanced Radio Isotope Power Subsystem for ExoMars Geophysical Package (GEP)

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p51c0935m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #P51C-0935

Physics

5494 Instruments And Techniques

Scientific paper

Within the framework of the ESA Aurora initiative , IPGP, DLR and an international consortium of laboratories launched an initiative aiming at adding on board the ExoMars mission a long life geophysical observatory, called "GEP" (Geophysical package) or "Mars Long Lived Surface Package". The feasibility study of this "geophysical package", carried out with the CNES support, showed the need for studying an alternative source of power to solar panels. Developments related to RTG technologies have been restricted for a long time to the United States and Russian industries. However, the exploration of the remote solar system (in the frame of the ESA Cosmic Vision) as well as long duration planetary missions (such as ExoMars Geophysical Package GEP ) exclude de facto the use of solar panels. A possible solution would be to associate to a radioisotope heat source of Russian origin (of Angel type) a thermo-electrical conversion system of European design. A European consortium of laboratories, including LPM, IPG and DLR (WF and RS) was thus constituted, in order to validate by a study the assumptions on the electric subsystem for the preliminary sizing of the geophysical package. The power of this Advanced radio-isotopic power system (ARPS) should be between 3 and 4 W, and the proposed mass limited to about 3 to 4 kg. This study will be undertaken in collaboration between the LPM, IPGP, DLR-WF and DLR-RS. A preliminary iteration of the GEP power subsystem will be presented, and main trade-off will be considered.

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