Sampling of small regolith particles from asteroids utilizing an alternative electrostatic field and electrostatic traveling wave

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    To realize reliable and autonomous regolith sampling from asteroids in space, the author has developed a new sampling system that uses electrostatic force. This system uses a combination of electrostatic capture and transport of particles. High voltage is applied between parallel screen electrodes of the sampling device. As a result of the electrostatic force, particles are captured by the screen electrodes. The captured particles are then transported by an electrostatic traveling wave and transferred to a collection capsule. It has been demonstrated that lunar soil simulant, iron particles, and crushed ice can be sampled if the end of the screen electrode is in contact with the regolith for a short period of time (within 1 s). Because gravity is extremely low on small asteroids, the process of sampling particles on asteroids will be easier than that on the Earth.

    Original languageEnglish
    Pages (from-to)631-635
    Number of pages5
    JournalJournal of Aerospace Engineering
    Volume27
    Issue number3
    DOIs
    Publication statusPublished - 2014 May 1

    Fingerprint

    Asteroids
    Electrostatics
    Electric fields
    Sampling
    Electrostatic force
    Electrodes
    Ice
    Capsules
    Gravitation
    Iron
    Earth (planet)
    Soils
    Electric potential

    Keywords

    • Aerospace engineering
    • Dynamics
    • Electrical equipment
    • Particles
    • Soils
    • Space exploration

    ASJC Scopus subject areas

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

    Cite this

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    abstract = "To realize reliable and autonomous regolith sampling from asteroids in space, the author has developed a new sampling system that uses electrostatic force. This system uses a combination of electrostatic capture and transport of particles. High voltage is applied between parallel screen electrodes of the sampling device. As a result of the electrostatic force, particles are captured by the screen electrodes. The captured particles are then transported by an electrostatic traveling wave and transferred to a collection capsule. It has been demonstrated that lunar soil simulant, iron particles, and crushed ice can be sampled if the end of the screen electrode is in contact with the regolith for a short period of time (within 1 s). Because gravity is extremely low on small asteroids, the process of sampling particles on asteroids will be easier than that on the Earth.",
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