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Open AccessArticle

“MicroMED” Optical Particle Counter: From Design to Flight Model

Department of Mechanical Engineering, Politecnico di Milano, 23900 Lecco, Italy
INAF-Astronomical Observatory of Capodimonte, Salita Moiariello 16, 80131 Naples, Italy
Author to whom correspondence should be addressed.
This paper is an expanded version of “Design validation of MicroMED, a particle analyzer for ExoMars 2020” published in the Proceedings of the 2019 IEEE 5th International Workshop on Metrology for AeroSpace (MetroAeroSpace), Torino, Italy, 19–21 June 2019.
Sensors 2020, 20(3), 611;
Received: 18 December 2019 / Revised: 17 January 2020 / Accepted: 19 January 2020 / Published: 22 January 2020
MicroMED (Micro Martian Environmental Dust Systematic Analyzer (MEDUSA)) instrument was selected for the ExoMars 2020 mission to study the airborne dust on the red planet through in situ measurements of the size distribution and concentration. This characterization has never been done before and would have a strong impact on the understanding of Martian climate and Aeolian processes on Mars. The MicroMED is an optical particle counter that exploits the measured intensity of light scattered by dust particles when crossing a collimated laser beam. The measurement technique is well established for laboratory and ground applications but in order to be mounted on the Dust Suite payload within the framework of ExoMars 2020 mission, the instrument must be compatible with harsh mechanical and thermal environments and the tight mass budget of the mission payload. This work summarizes the thermo-mechanical design of the instrument, the manufacturing of the flight model and its successful qualification in expected thermal and mechanical environments. View Full-Text
Keywords: MicroMED; thermo-mechanical design; Dust Suite; ExoMars 2020; flight model; qualification testing MicroMED; thermo-mechanical design; Dust Suite; ExoMars 2020; flight model; qualification testing
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Scaccabarozzi, D.; Saggin, B.; Somaschini, R.; Magni, M.; Valnegri, P.; Esposito, F.; Molfese, C.; Cozzolino, F.; Mongelluzzo, G. “MicroMED” Optical Particle Counter: From Design to Flight Model. Sensors 2020, 20, 611.

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