Particle-size sorting system of lunar regolith using electrostatic traveling wave

M. Adachi, H. Moroka, Hiroyuki Kawamoto, S. Wakabayashi, T. Hoshino

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    A particle-size sorting system of lunar regolith using an electrostatic traveling wave is developed for In-Situ Resource Utilization on the Moon to extract indispensable resources from the regolith and realize long-term exploration. The regolith is sorted by utilizing a balance between the electrostatic and gravitational forces, which are determined depending on particle size, in vacuum conditions where the particles are not subjected to air drag. In this study, the effect of particle charge on the particle motion is confirmed by conducting model experiments and numerical calculations based on the distinct element method. In addition, it was experimentally demonstrated that particles less than approximately 20 μm in diameter were efficiently separated from the bulk of a lunar regolith simulant FJS-1 in a vacuum condition (∼1.5 × 10−2 Pa), and the performance of the size sorting system on the Moon was predicted by the numerical calculations. The system utilizes only the electrostatic force, and it does not require any gas, liquid, or mechanical moving parts.

    Original languageEnglish
    Pages (from-to)69-76
    Number of pages8
    JournalJournal of Electrostatics
    Volume89
    DOIs
    Publication statusPublished - 2017 Oct 1

    Fingerprint

    regolith
    Moon
    classifying
    Static Electricity
    Sorting
    Particle Size
    traveling waves
    Electrostatics
    Particle size
    Vacuum
    electrostatics
    Electrostatic force
    Drag
    moon
    Gases
    in situ resource utilization
    Liquids
    Air
    vacuum
    particle motion

    Keywords

    • Aerospace engineering
    • In situ resource utilization
    • Regolith
    • Size sorting

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biotechnology
    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Electrical and Electronic Engineering

    Cite this

    Particle-size sorting system of lunar regolith using electrostatic traveling wave. / Adachi, M.; Moroka, H.; Kawamoto, Hiroyuki; Wakabayashi, S.; Hoshino, T.

    In: Journal of Electrostatics, Vol. 89, 01.10.2017, p. 69-76.

    Research output: Contribution to journalArticle

    Adachi, M. ; Moroka, H. ; Kawamoto, Hiroyuki ; Wakabayashi, S. ; Hoshino, T. / Particle-size sorting system of lunar regolith using electrostatic traveling wave. In: Journal of Electrostatics. 2017 ; Vol. 89. pp. 69-76.
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