Active dust control and mitigation technology for lunar and Martian exploration

Calle, Carlos I.; Buhler, C. R.; Johansen, Michael R.; Hogue, Michael D.; Snyder, Susan

doi:10.1016/j.actaastro.2011.06.010

Cited by 100 publications

(45 citation statements)

References 6 publications

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“…Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 The Japan Society of Mechanical Engineers [DOI: 10.1299/transjsme.14-00224] このような静電力を活用した技術は，可動部がなく構造が単純なために機械的な故障が生じづらく，制御が容易，低消費電力，流体が不要という利点を持つことから近年注目されており , Calle, et al, 2011a, Kawamoto and Hasegawa, 2004, Kawamoto and Hara, 2011 …”

Section: Received 21 April 2014unclassified

Electrostatic dust shield system used for Lunar and Mars exploration equipment

Adachi

Kawamoto

2015

Transactions of the JSME (In Japanese)

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A unique shield system has been developed utilizing electrostatic force to remove dust breaking into bearings and mechanical seals of equipment used for space exploration. Because the performance of the former system was not satisfactory for mitigating dust intrusion, we added wire electrodes above the former system to improve the performance. As the result, approximately 95 % of dust was repelled from the gap. Moreover, we developed a numerical calculation algorithm using distinct element method for decreasing calculation load without decreasing calculation accuracy. It was predicted by the developed numerical method that the shield performance of the electrostatic dust shield system would be great on the Moon and Mars environment if dust would be charged strongly. This technology is expected to increase the reliability of equipment used in long-term manned and unmanned activities on the Lunar and Martian surface. 緒言宇宙探査は人類の普遍的な夢であり，各国で様々なプロジェクトが進められている．わが国でも，月探査機 SELENE (Kato, et al., 2010) や小惑星探査機 Hayabusa の成功は記憶に新しい (久保田, 2010)．将来的にも各国で月面開発や火星探査等が計画されているが，月や惑星表面の砂塵が機器・人体へ悪影響を及ぼすことが危惧されている．実際にアポロ計画で月面上に存在するルナレゴリスが探査活動の大きな障害になったことや (Christofersen, et al., 2009, Gaier, 2005 Received 21 April 2014Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 The Japan Society of Mechanical Engineers [DOI: 10.1299/transjsme.14-00224] このような静電力を活用した技術は，可動部がなく構造が単純なために機械的な故障が生じづらく，制御が容易，低消費電力，流体が不要という利点を持つことから近年注目されており , Calle, et al., 2011a, Kawamoto and Hasegawa, 2004, Kawamoto and Hara, 2011 2Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © Davies, 1945Davies, , 宗像, 1990Davies, , 静電気学会, 1998Davies, , 粉体工学会, 2005 Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 The Japan Society of Mechanical Engineers [DOI: 10.1299/transjsme.14-00224] Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 10Adachi and Kawamoto, Transactions of the JSME (in Japanese), Vol.81, No.821 (2015) © 2015 Mio, H. and Shimosaka, A., Optimum cell size for contact detection in the algorithm of the discrete element method, Journal of Chemical Engineering of Japan, Vol. 38, No.12 (2005), pp.969-975.Mio, H., Kawamura, J., Higuchi, R., Shimosaka, A., Shirakawa, Y. and Hidaka, J., Effect of toner charge on developing behavior in two-component electrophotographic system by discrete element method,

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Section: Received 21 April 2014unclassified

Electrostatic dust shield system used for Lunar and Mars exploration equipment

Adachi

Kawamoto

2015

Transactions of the JSME (In Japanese)

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“…However, only electrostatic-or electrodynamic-based methods seem practical which have gained the most acceptance in the literature [5,6]. Electrodynamic dust shield (EDS) technology introduced by Calle et al [7] and Kawamoto et al [8,9] is based on electric curtain concepts developed by Tatom et al at NASA [10] and Masuda et al at University of Tokyo [11]. The EDS consists of embedded electrodes inside a transparent insulator film installed on the solar cell surfaces, and it utilizes standing or traveling waves to lift and transport both charged and uncharged particles deposited on the surface.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic collection of tribocharged lunar dust simulants

Afshar-Mohajer

Sorloaica-Hickman

2014

Advanced Powder Technology

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“…A cloud of levitated lunar grains with high affinity of adhering to the nearby surfaces, which hampered the lunar surface operations, was observed during the entire Apollo program (from 1969 to 1973) (Gaier, 2005;Stubbs et al, 2006;Colwell et al, 2009;Gaier et al, 2011). Due to the rarefied atmosphere of the moon and absence of a strong magnetic field, the lunar surface is not shielded from high energetic solar radiation and solar winds (Abbas et al, 2007;Colwell et al, 2009;Calle et al, 2011). While photoemissive radiation (e.g., UV and X-ray) on lunar dayside accumulate positive charges, impingement of electrons on lunar nightside leads to negative charge accumulation on lunar grains (Walch et al, 1995;Halekas et al, 2002;Halekas et al, 2008;Dove et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Influence of Back Electrostatic Field on the Collection Efficiency of an Electrostatic Lunar Dust Collector

Afshar-Mohajer

Thakker

et al. 2014

Aerosol Air Qual. Res.

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Protecting sensitive surfaces from dust deposition in the limiting condition of the lunar atmosphere is imperative for space exploration. In this study, how back electrostatic field due to charge build-up on collection plates may affect the performance of an electrostatic lunar dust collector (ELDC) was investigated. The relationships between ELDC dimensions, collection efficiency and electrical properties of lunar dust particles were derived to develop a model, appropriate for any size of the ELDC. A Lagrangian-based discrete element method (DEM) was applied to track particle trajectories, and sensitivity analyses were conducted for the concentration of the incoming particles, the number of pre-collected particles and the applied voltages. The results revealed that the collection efficiency reduced over time due to the back electrostatic field of the collected particles, which ultimately led to a suspended regime, rather than just collected and penetrated fractions considered in conventional models. The generated back electrostatic field and the cloud of suspended particles were strong enough to disrupt the performances of both the ELDC and the protected device. The maximum time ELDC can run without significant loss in collection efficiency was estimated to be 10 terrestrial days for the studied ELDC size and applied voltage. Because the electrical power was negligible compared to the provided power by the solar panels, increasing the applied voltage was found to be the best option to counteract back electrostatic growth.

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Active dust control and mitigation technology for lunar and Martian exploration

Cited by 100 publications

References 6 publications

Electrostatic dust shield system used for Lunar and Mars exploration equipment

Electrostatic dust shield system used for Lunar and Mars exploration equipment

Electrostatic collection of tribocharged lunar dust simulants

Influence of Back Electrostatic Field on the Collection Efficiency of an Electrostatic Lunar Dust Collector

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