ATTENZIONE! IL REPOSITORY E’ APERTO ESCLUSIVAMENTE ALL’IMMISSIONE DEI RAPPORTI TECNICI (COLLEZIONE 4.01). NON E’ POSSIBILE INSERIRE PRODOTTI IN TUTTE LE ALTRE COLLEZIONI, A CAUSA DI PROBLEMI TECNICI. THE REPOSITORY IS OPEN EXCLUSIVELY FOR THE SUBMISSION OF TECHNICAL REPORTS (COLLECTION 4.01). SUBMISSIONS TO ALL OTHER COLLECTIONS ARE TEMPORARILY UNAVAILABLE, DUE TO TECHNICAL ISSUES.
 

Techniques to verify the sampling system and flow characteristics of the sensor MicroMED for the ExoMars 2022 Mission

Journal
Date Issued
2021
Author(s)
•
•
•
•
•
•
•
•
•
•
Scaccabarozzi, Diego
•
Saggin, Bortolino
•
Rico, Alberto Martin Ortega
•
Arruego, Ignacio
•
De Mingo, José Ramon
•
Santiuste, Nuria
•
•
DOI
Abstract
Suspended dust has a prominent role in Martian climatology. Several significant dust related phenomena can be observed at various scales, starting from global dust storms to local dust devils, which have important effects such as the increase of troposphere temperature, the modification of the wind regime and the localized motion of sand at the surface. These phenomena depend on dust grain characteristics such as the size distribution or the chemical and bulk composition. Currently, we do not have direct measurement of the dust properties; the only available information in this regard are derived from spectrometric measurements, optical depth, and albedo coming from instruments aboard satellites and in-situ. Herein, we describe the tests performed on the optical particle counter named MicroMED, designed and built to perform the first ever direct in-situ measurement of suspended dust grains in the Martian atmosphere close to the surface. MicroMED is a dust particle size analyzer which was selected to join the Dust Complex payload aboard the ESA/Roscosmos ExoMars 2022 mission. It has the capability to suck in dust that is suspended in atmosphere and to measure the sizes of single grain. The sensor sucks in the dust grains using a sampling system, guides the grains through ducts and concentrates them in an area illuminated by laser. Detecting the intensity of the light scattered by the grains during the crossing through the illuminated area, it is possible to determinate the size of grain. Here we present the innovative techniques in order to verify the performances in terms of dust suction efficiency of the MicroMED Flight Model, using a prototype called MM1.
Volume
185
Start page
110075
Uri
Url
Issn Identifier
0263-2241
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

Article.pdf

Description
[Administrators only]
Size

9.92 MB

Format

Adobe PDF

Checksum (MD5)

5011935609a6970b1b73f296a9ac33d6

Loading...
Thumbnail Image
Name

Manuscript_3.docx

Description
preprint
Size

86.93 KB

Format

Microsoft Word XML

Checksum (MD5)

2f3e17ec0b9aaa0209ed2cfd16393afa