Abstract
A magnetic sampler for future sample return missions on asteroids was developed. The sampler had a simple configuration, consisting of a solenoid coil, direct current (DC) power supply, and switching circuit, and the sampling was conducted using the coil gun mechanism. The sampler did not require mechanical moving parts, gas, or liquid, and its control was simple; thus, it was reliable for use in a space environment. The authors analyzed the particle motion in a magnetic field on Earth and in space environments; the sampler performance was evaluated by numerical calculations on the basis of the distinct element method and experiments in air and vacuum environments. The results of numerical calculations and experiments were consistent qualitatively with the analytical calculations. The magneto-motive force and its applied time mutually affected the dynamics of particles. The magnetic interaction of particles in the magnetic field also affected the sampler performance. Moreover, the sampler performance in vacuum and a microgravity of 0.00001g was better than that on Earth owing to the absence of air drag and small gravitational force.
Original language | English |
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Article number | 04017095 |
Journal | Journal of Aerospace Engineering |
Volume | 31 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2018 Mar 1 |
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Keywords
- Asteroid
- Coil gun
- Distinct element method
- Regolith
- Sample return
ASJC Scopus subject areas
- Civil and Structural Engineering
- Materials Science(all)
- Aerospace Engineering
- Mechanical Engineering
Cite this
Magnetic Sampler for Regolith Particles on Asteroids. / Adachi, M.; Obata, R.; Kawamoto, Hiroyuki; Wakabayashi, S.; Hoshino, T.
In: Journal of Aerospace Engineering, Vol. 31, No. 2, 04017095, 01.03.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic Sampler for Regolith Particles on Asteroids
AU - Adachi, M.
AU - Obata, R.
AU - Kawamoto, Hiroyuki
AU - Wakabayashi, S.
AU - Hoshino, T.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - A magnetic sampler for future sample return missions on asteroids was developed. The sampler had a simple configuration, consisting of a solenoid coil, direct current (DC) power supply, and switching circuit, and the sampling was conducted using the coil gun mechanism. The sampler did not require mechanical moving parts, gas, or liquid, and its control was simple; thus, it was reliable for use in a space environment. The authors analyzed the particle motion in a magnetic field on Earth and in space environments; the sampler performance was evaluated by numerical calculations on the basis of the distinct element method and experiments in air and vacuum environments. The results of numerical calculations and experiments were consistent qualitatively with the analytical calculations. The magneto-motive force and its applied time mutually affected the dynamics of particles. The magnetic interaction of particles in the magnetic field also affected the sampler performance. Moreover, the sampler performance in vacuum and a microgravity of 0.00001g was better than that on Earth owing to the absence of air drag and small gravitational force.
AB - A magnetic sampler for future sample return missions on asteroids was developed. The sampler had a simple configuration, consisting of a solenoid coil, direct current (DC) power supply, and switching circuit, and the sampling was conducted using the coil gun mechanism. The sampler did not require mechanical moving parts, gas, or liquid, and its control was simple; thus, it was reliable for use in a space environment. The authors analyzed the particle motion in a magnetic field on Earth and in space environments; the sampler performance was evaluated by numerical calculations on the basis of the distinct element method and experiments in air and vacuum environments. The results of numerical calculations and experiments were consistent qualitatively with the analytical calculations. The magneto-motive force and its applied time mutually affected the dynamics of particles. The magnetic interaction of particles in the magnetic field also affected the sampler performance. Moreover, the sampler performance in vacuum and a microgravity of 0.00001g was better than that on Earth owing to the absence of air drag and small gravitational force.
KW - Asteroid
KW - Coil gun
KW - Distinct element method
KW - Regolith
KW - Sample return
UR - http://www.scopus.com/inward/record.url?scp=85036475381&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85036475381&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)AS.1943-5525.0000797
DO - 10.1061/(ASCE)AS.1943-5525.0000797
M3 - Article
AN - SCOPUS:85036475381
VL - 31
JO - Journal of Aerospace Engineering
JF - Journal of Aerospace Engineering
SN - 0893-1321
IS - 2
M1 - 04017095
ER -