Electrostatic Sampler for Large Regolith Particles on Asteroids

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The authors have developed an electrostatic sampler for the reliable and autonomous collection of regolith particles on asteroids. The sampler, which employs Coulomb and dielectrophoresis forces to capture regolith particles and transport them to a collection capsule, can collect a lunar regolith simulant containing particles of various sizes less than approximately 1.0 mm in diameter in a low-gravity environment. However, there might be large particles with diameters of 1.0 mm or larger on asteroid surfaces. The authors conducted a numerical calculation and a model experiment to confirm whether the sampler can collect particles larger than 1.0 mm in diameter in a low-gravity environment. The numerical calculation, performed using the distinct element method, predicted the effect of the particle diameter on the sampler performance, indicating that particles 1.0 mm in diameter or larger could be successfully sampled in a low-gravity environment. Glass particles 2 mm in diameter were experimentally sampled in a 0.01g environment reproduced by a parabolic aircraft flight, and rocks 4 mm in diameter were agitated under 0.01g and successfully sampled under microgravity.

    Original languageEnglish
    Article number4016098
    JournalJournal of Aerospace Engineering
    Volume30
    Issue number3
    DOIs
    Publication statusPublished - 2017 May 1

    Fingerprint

    Asteroids
    Electrostatics
    Gravitation
    Microgravity
    Electrophoresis
    Capsules
    Rocks
    Aircraft
    Glass
    Experiments

    Keywords

    • Asteroids
    • Electrostatic sampler
    • Soils
    • Space exploration

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Materials Science(all)
    • Aerospace Engineering
    • Mechanical Engineering

    Cite this

    Electrostatic Sampler for Large Regolith Particles on Asteroids. / Adachi, M.; Kawamoto, Hiroyuki.

    In: Journal of Aerospace Engineering, Vol. 30, No. 3, 4016098, 01.05.2017.

    Research output: Contribution to journalArticle

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