SEISMOMETERS
The Mars exploration is one of the greatest adventures of this century. Being able to detect water as a sign of life is of paramount importance. A potential solution is to use geological probing to detect water presence in deeply buried natural tanks.
SODERN is involved in the European CNES-led NETLANDER mission preparation with the development of a Very Broad-Band Seismometer in collaboration with the IPGP (Institut de Physique du Globe de Paris).
The VBB Seismometer is a very sensitive mechanical pendulum able to detect very low ground accelerations within a frequency range of 0.1mHz to 50Hz.
Capacitive sensors are used to measure the pendulum movements with an accuracy of 1 to 10 picometers, depending on the frequency.
Such high performance requirements have to be met within very restrictive conditions: very low mass, volume and power, a high level of shock for landing on Mars as well as an inhospitable environment.
Demonstration models of this sensor developed by SODERN and tested by IPGP have proven their readiness and compatibility with designs for future Martian missions.
PHOTOGRAPHiES :
CNES, ESA, EADS, EADS/ST, ALCATEL Space, CEA, MC Graphic, NASA, David DUCROS, Pierre CARRIL, E. GRIMAULT, SODERN – Charles SABATER
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Crédits photos : CNES, ESA, EADS, EADS/ST, ALCATEL Space, CEA, MC Graphic, NASA, David DUCROS, Pierre CARRIL, E. GRIMAULT, SODERN – Charles SABATER
