SD2

SD2 (Sample Drilling and Distribution) is less of an instrument in itself and more of a system to provide some of the other instruments with material for analysis. It contains a drill capable of boring down to 230 mm and collecting samples, a carousel and 26 ovens. The entire system weighs ~ 5 kg.

 
The principle purpose of SD2 was to provide material for ÇIVA, COSAC and Ptolemy to analyse. The ovens would have been used to heat samples to medium (~ 180ºC) and high (~ 800 ºC) temperatures, providing the gases required for analyses with COSAC and Ptolemy. In the event, only COSAC was able to receive a sample from the system before the primary battery on the lander failed.
 

SD2 drilling and sample delivery system

The SD2 sample drilling and delivery system. Copyright SD2 team Dipartimento di Scienze e Tecnologie Aerospaziali

For sources and further information visit:

http://sci.esa.int/rosetta/31445-instruments/?fbodylongid=894