Author/Authors :
Faber، نويسنده , , Claudia and Knapmeyer، نويسنده , , Martin and Roll، نويسنده , , Reinhard and Chares، نويسنده , , Bernd and Schrِder، نويسنده , , Silvio and Witte، نويسنده , , Lars and Seidensticker، نويسنده , , Klaus J. and Fischer، نويسنده , , Hans-Herbert and Mِhlmann، نويسنده , , Diedrich and Arnold، نويسنده , , Walter، نويسنده ,
Abstract :
The landing of Philae on comet 67P/Churyumov-Gerasimenko is scheduled for November 12th, 2014. Each of the three landing feet houses in one sole a tri-axial acceleration sensor of the Comet Acoustic Surface Sounding Experiment (CASSE). They will thus be the first sensors to be in mechanical contact with the comet surface. CASSE will be in listening mode to record the deceleration of the lander when it impacts with the comet at a velocity of approx. 1 m/s. The signals are used to discern from these data whether the selected landing place is of icy or sandy nature. Here, a deeper analysis of this data yields information on the reduced elastic-plastic modulus of the comet׳s surface material.
Keywords :
Comet 67P , Surface elastic-plastic properties , Landing shock , Rosetta?Philae
