Kinetic Particle Simulations of Plasma Charging and Dust Transport near Uneven Lunar Surface Terrain

Simulations of Lunar Dust interaction with exploration systems and instruments

10.5194/epsc2021-729 ◽

2021 ◽

Author(s):

Fabrice Cipriani ◽

François Piette

Keyword(s):

Lunar Surface ◽

Imaging System ◽

Compositional Analysis ◽

Thermal Control ◽

The Moon ◽

Lunar Dust ◽

Dust Transport ◽

Predictive Algorithms ◽

Performance Variations

Lunar Dust is representing both an engineering challenge for future exploration missions due to systems potential contamination (due to regolith mobilization during e.g. traverse phases, landings, scooping, astronauts EVAs..) and a scientific target for e.g. mineralogical and compositional analysis of the Lunar surface. Therefore predicting not only interactions with systems but also payloads landed at the lunar surface is an important part of future missions design. Strong partnerships and synergies between agencies and space industries are now allowing the preparation of new missions with challenging timescales, for a return to the Moon in the next couple of years. In this context, the analysis of re-analysis of some of the Apollo era data and other landed assets is of high interest to perform the calibration of predictive algorithms and simulations tools of regolith transport and interactions with systems. The present work is organized in two parts: in the first part, we present a modelling study of two experiments included in the Apollo Lunar Surface Experiment Package (ALSEP): the Lunar Ejecta and Meteoroids Experiment (LEAM), which experienced failures linked to thermal control and the Dust Detector Experiment (DDE) which could measure solar cells performance variations due to dust coverage. In the second part, we present simulation results for the contamination of the Imaging System accommodated on the PROSPECT experiment that will be embarked on the Luna 27 lander, due to land on the Moon in the next couple of years. We will discuss the quality of our predictions, the uncertainties inherent to the measurements, and the way forward in terms of better representation of lunar dust transport and interactions processes through models.

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Investigation of dust transport on the lunar surface in a laboratory plasma with an electron beam

Journal of Geophysical Research Atmospheres ◽

10.1029/2010ja015465 ◽

2010 ◽

Vol 115 (A11) ◽

pp. n/a-n/a ◽

Cited By ~ 20

Author(s):

X. Wang ◽

M. Horányi ◽

S. Robertson

Keyword(s):

Electron Beam ◽

Lunar Surface ◽

Laboratory Plasma ◽

Dust Transport

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Electrostatic dust transport on the lunar surface

Icarus ◽

10.1016/0019-1035(62)90011-8 ◽

1962 ◽

Vol 1 (1-6) ◽

pp. 112-120 ◽

Cited By ~ 55

Author(s):

S.F. Singer ◽

E.H. Walker

Keyword(s):

Lunar Surface ◽

Dust Transport

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The Geosciences Applied to Lunar Exploration

Symposium - International Astronomical Union ◽

10.1017/s0074180900178222 ◽

1962 ◽

Vol 14 ◽

pp. 169-257 ◽

Cited By ~ 9

Author(s):

J. Green

Keyword(s):

Lunar Surface ◽

Probable Mechanism ◽

Point Of View ◽

Lunar Exploration ◽

Geological Model ◽

Apply Geophysics ◽

Surface Features ◽

The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

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A Photographic Map of the Moon

Symposium - International Astronomical Union ◽

10.1017/s0074180900178179 ◽

1962 ◽

Vol 14 ◽

pp. 113-115

Author(s):

D. W. G. Arthur ◽

E. A. Whitaker

Keyword(s):

Lunar Surface ◽

The Moon ◽

Map Projection

The cartography of the lunar surface can be split into two operations which can be carried on quite independently. The first, which is also the most laborious, is the interpretation of the lunar photographs into the symbolism of the map, with the addition of fine details from telescopic sketches. An example of this kind of work is contained in Johann Krieger'sMond Atlaswhich consists of photographic enlargements in which Krieger has sharpened up the detail to accord with his telescopic impressions. Krieger did not go on either to convert the photographic picture into the line symbolism of a map, or to place this picture on any definite map projection.

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Characterization of D‐type Spectra Based on Hyperspectral Remote Sensing of the Lunar Surface

Journal of Geophysical Research Planets ◽

10.1029/2020je006669 ◽

2020 ◽

Author(s):

Satoru Yamamoto ◽

Sei‐ichiro Watanabe

Keyword(s):

Remote Sensing ◽

Lunar Surface ◽

Hyperspectral Remote Sensing

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EFFECT OF DIFFERENT DOSES OF PREDNISOLONE AND ADRENOCORTICOTROPHIC HORMONE (ACTH) ON LYMPHATIC LUNG CLEARANCE AND ON EXPERIMENTAL SILICOSIS

Acta Endocrinologica ◽

10.1530/acta.0.0630325 ◽

1970 ◽

Vol 63 (2) ◽

pp. 325-337

Author(s):

Carl-Johan Göthe

Keyword(s):

Lymph Nodes ◽

Lymphatic System ◽

The Body ◽

Lung Weight ◽

Lung Clearance ◽

Dust Transport ◽

Fine Particulate ◽

Quartz Dust ◽

Different Doses ◽

Stimulation Of

ABSTRACT The effect of three doses of prednisolone and ACTH respectively on the weight of the body, the lungs and the hilar lymph nodes was studied on rats killed one month after the intratracheal (i.t.) injection of 50 mg of fine-particulate quartz. The prednisolone was administered via the drinking water, and the ACTH was injected intraperitoneally during the period between the i.t. injection of quartz dust and the killing of the animals. Prednisolone causes the rats to become cachectic and reduces the weight of the hilar lymph nodes. It also retards the transport of quartz dust from the lungs via the lymphatics. All these effects increase with increasing doses of prednisolone. However, its effect on the lung weight is insignificant. ACTH does not affect the body weight, but retards the weight increase of the lungs and the hilar lymph nodes. These effects increase with increasing doses of ACTH, and seem to be connected with an ability of ACTH to promote the clearance of quartz dust from the lungs and hilar lymph nodes. The method used, however, does not make it possible to differentiate quantitatively between any ACTH effects on the bronchogenie and lymphatic lung-clearance mechanisms. Available data, however, indicate that the stimulation of the dust transport from the lungs and hilar lymph nodes is, at least to some extent, related to the lymphatic system.

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