Summary Reader Response Final of ExoMars Drill Unit
In the article “The ExoMars drill unit” (2019), the ExoMars was designed to acquire mineral samples in various types of soil to a depth of two-meter. The features of the drill unit are a drill tool, three extension rods, a rotation-translation unit, and a drill box. The function of the drill tool is to acquire a minimum of 17 mineral samples by penetrating different types of soil. The extension rods help increase the length of the drill. Each extension rod is 500 mm each. According to a report, The Drill and Sampling System for the ExoMars Rover (2010), the rotation translation unit enables the drill box to be positioned horizontally for stowage, vertically for drilling, and at an inclined position for sample extraction. The sample is extracted to the MArs Multispectral Imager for Subsurface Studies for analysis. The drill box acts as a housing to contain the extension rods and the backup drill tool. With features such as the drill tool, extension rods, and drill box the ExoMars drill unit will succeed in acquiring the samples on mars.
The first essential feature
is the drill tool, it is used to drill through the minerals on Mars to acquire
the samples. According to Magnami et al., 2008 the tip of the drill bit is
equipped with “Polycrystalline Diamond Bits” which enables the drill to drill
through hard materials with minimal force. European Space Agency, 2021 states
that the drill unit has successfully collected samples by drilling through
rocks and soil with varying hardness. This shows that the ExoMars drill unit
will be able to drill through the minerals on Mars and acquire the samples.
The next essential feature is
the extension rods. With the extension rods, the drill unit can drill to an
acceptable depth of 1.7 meters. According to European Space Agency, 2021 the
drill unit was able to drill to a depth of 1.7 m on earth while successfully collecting
the sample. Thus, being able to pass the test with the help of the extension
rods the drill unit can acquire samples as deep as 1.7 meters, the drill unit
will succeed in acquiring the samples on Mars.
The last essential feature is
the drill box which may not be able to operate due to unexpected environmental
conditions on Mars. Williams, 2021 states that there are other various
environmental challenges on Mars aside from the difference in gravitational
strength which may cause the drill to be inoperative. This poses an issue as
the dill unit will not be able to acquire the samples if the drill unit is
inoperative.
However, tests conducted on
the drill box show that it will be able to operate in conditions similar to
that on mars. According to Leonardo Company, 2018, the drill box was able to
operate in an environment simulating the Martian environment with temperatures
ranging from -100 degrees to 35 degrees and an atmosphere comprising of carbon
dioxide with a pressure of five to ten millibars. As the drill box was able to
pass the test mimicking the conditions on Mars, it will have no issues
operating and acquiring the samples.
In conclusion, with features
such as the drill tool equipped with Polycrystalline Diamond Bits enabling it
to be able to drill through hard materials, extension rods to increase the
depth of drill to two meters, and drill box to ensure the instruments within it
are operational in Mars environment. The ExoMars Drill unit will succeed in
drilling through hard minerals to a depth of 2 meters on Mars to acquire the
samples.
References
European Space Agency. (2019,
September 1). The ExoMars drill unit.
https://exploration.esa.int/web/mars/-/43611-rover-drill
European Space Agency (2021).
First deep drilling success for ExoMars.
https://phys.org/news/2021-09-deep-drilling-success-exomars.html
Leonardocompany (2018). Positive
results as Space Drill put to the test for ExoMars 2020 mission.
https://www.leonardocompany.com/en/press-release-detail/-/detail/trivella-test-exomars2020-marte
Magnami,P.,Izzo, M., Rizzi,
F., Sense, s., Campo, F., Finotello, R., Ferrario, R. (2008). ExoMars multi
rod drill development and testing.
http://robotics.estec.esa.int/ASTRA/Astra2008/S03/03_04_Re.pdf
Magnani, P., Re, E., Senese,
S., Rizzi, F., Gily, A., & Baglioni, P. (2010, September). The Drill
and Sampling System for the ExoMars Rover.
http://robotics.estec.esa.int/i-SAIRAS/isairas2010/PAPERS/044-2769-p.pdf
Williams.M (2021). ExoMars
will be drilling 1.7 meters to pull its samples from below the surface of Mars.
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