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; SD2 : The ''Drill, Sample, and Distribution subsystem'' obtains soil samples from the comet at depths of {{convert|0|to|230|mm|in}} and distributes them to the Ptolemy, COSAC, and ÇIVA subsystems for analyses.<ref>{{cite web |url=http://www.esa.int/Our_Activities/Space_Science/Rosetta/SD2 |title=SD2 |publisher=European Space Agency |accessdate=26 August 2014 }}</ref> The system contains four types of subsystems: drill, carousel, ovens, and volume checker.<ref>{{cite web |url=http://www.aero.polimi.it/SD2/ |title=Philae SD2 |publisher=Politecnico di Milano |accessdate=11 August 2014}}</ref> There are a total of 26 platinum ovens to heat samples—10 medium temperature {{convert|180|C|F}} and 16 high temperature {{convert|800|C|F}}—and one oven to clear the drill bit for reuse.<ref>{{cite web |url=http://www.aero.polimi.it/SD2/?SD2:System_Overview:Ovens |title=Ovens |publisher=Politecnico di Milano |accessdate=11 August 2014}}</ref>
==International contributions==
;Austria : The [[Institut für Weltraumforschung (Space Research Institute)|Austrian Space Research Institute]] developed the lander's anchor and two sensors within MUPUS, which are integrated into the anchor tips. They indicate the temperature variations and the shock acceleration.
;Finland : The [[Finnish Meteorological Institute]] provided the Memory of the Command, Data and Management System (CDMS) and the Permittivity Probe (PP).
;France : The [[CNES|French Space Agency]] together with some scientific laboratories (IAS, SA, LPG, LISA) provided the system's overall engineering, radiocommunications, battery assembly, CONSERT, ÇIVA and the ground segment (overall engineering and development/operation of the Scientific Operation & Navigation Centre).
;Germany : The [[German Aerospace Center|German Space Agency]] (DLR) has provided the structure, thermal subsystem, flywheel, the Active Descent System (procured by DLR but made in Switzerland),<ref name="moog">{{cite web |url=http://www.moog.com/literature/Space_Defense/Spacecraft/Propulsion/active_descent_system.pdf |title=Active Descent System |publisher=[[Moog Inc.]] |accessdate=11 November 2014}}</ref> ROLIS, downward-looking camera, SESAME, acoustic sounding and seismic instrument for ''Philae''. It has also managed the project and did the level product assurance. The [[University of Münster]] built MUPUS (it was designed and built in Space Research Centre of Polish Academy of Sciences <ref name="wawpl2014" />) and the [[Braunschweig University of Technology]] the ROMAP instrument. The [[Max Planck Institute for Solar System Research]] made the payload engineering, eject mechanism, landing gear, anchoring harpoon, central computer, COSAC, APXS and other subsystems.
;Hungary : The Command and Data Management Subsystem (CDMS) designed in the Wigner Research Centre for Physics of the [[Hungarian Academy of Sciences]]. The Power Subsystem (PSS) designed in the Department of Broadband Infocommunications and Electromagnetic Theory at Budapest University of Technology and Economics.
==Hình ảnh==
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