Hayabusa2 Sampler: Collection of Asteroidal Surface Material

Sawada, Hirotaka; Okazaki, Ryuji; Tachibana, Shogo; Sakamoto, Kanako; Takano, Yoshinori; Okamoto, Chisato; Yano, Hajime; Miura, Yayoi N.; Abe, Masanao; Hasegawa, Susumu; Noguchi, Takaaki

doi:10.1007/s11214-017-0338-8

Cited by 90 publications

(65 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…has penetrated into the final cylinder. The collected mass after 1 s can go up to 0.4 g, which is higher than 100 mg, the scientific objective of Hayabusa2 (Sawada et al 2017). The density of particles in our simulations being 2.43 g cm −3 , one particle with a radius larger than 0.215 cm or two particles with any sizes are enough to fulfil the scientific requirements.…”

Section: General Resultsmentioning

confidence: 75%

“…The sampler of Hayabusa2 is composed of a long horn with a non-uniform radius, a filter located near the top of the horn, and a narrow path to the sample return capsule. Its geometry is described in Sawada et al (2017). We modelled the horn and a part of the sampler storage and transfer mechanism (that we incorporate to the horn for more simplicity in this study) thanks to five circular frustums, i.e.…”

Section: Application To Hayabusa2 Samplingmentioning

confidence: 99%

“…Since Hayabusa2 spacecraft has three projectiles at its disposal (Sawada et al 2017), it is interesting to check if firing the second projectile a short moment after the first one during the same sampling could significantly increase the number of ejecta and collected particles, or if the changes would stay marginal. In order to investigate this, we model the impact of a second impactor 0.2 s after the first one.…”

Section: Second Projectilementioning

confidence: 99%

“…Low-speed impacts on asteroids have also had a human origin, and are one of the chosen solutions for sampler return missions to collect material. JAXA chose for both Hayabusa and Hayabusa2 missions a sampling mechanism consisting of a projectile impacting the asteroid surface at 300 m s −1 (Sawada et al 2017). Thus, increasing our knowledge on low-speed impacts on regolith material is also beneficial for the design of sampling mechanisms and for the interpretation of their outcome.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Numerical modelling of medium-speed impacts on a granular surface in a low-gravity environment application to Hayabusa2 sampling mechanism

Thuillet

Michel

Tachibana

et al. 2019

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

Even if craters are very common on Solar System body surfaces, crater formation in granular media such as the ones covering most of visited asteroids still needs to be better understood, above all in low-gravity environments. JAXA’s sample return mission Hayabusa2, currently visiting asteroid (162173) Ryugu, is a perfect opportunity for studying medium-speed impacts into granular matter, since its sampling mechanism partly consists of a 300 m s−1 impact. In this paper, we look at medium-speed impacts, from 50 to 300 m s−1, into a granular material bed, to better understand crater formation and ejecta characteristics. We then consider the sampler horn of Hayabusa2 sampling mechanism and monitor the distribution of particles inside the horn. We find that the cratering process is much longer under low gravity, and that the crater formation mechanism does not seem to depend on the impact speed, in the considered range. The Z-model seems to rightly represent our velocity field for a steady excavation state. From the impact, less than $10{{\ \rm per\ cent}}$ is transmitted into the target, and grains are ejected mostly with angles between 48° and 54°. Concerning the sampling mechanism, we find that for most of the simulations, the science goal of 100 mg is fulfilled, and that a second impact increases the number of ejecta but not necessarily the number of collected particles.

show abstract

Section: General Resultsmentioning

confidence: 75%

Section: Application To Hayabusa2 Samplingmentioning

confidence: 99%

Section: Second Projectilementioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Numerical modelling of medium-speed impacts on a granular surface in a low-gravity environment application to Hayabusa2 sampling mechanism

Thuillet

Michel

Tachibana

et al. 2019

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

show abstract

“…A careful analytical strategy (i.e., the order of analyses) will be required for the robust description of extraterrestrial organic matter in future sample return missions (e.g., Hayabusa2; Tachibana et al 2014;Okazaki et al 2017;Sawada et al 2017;Watanabe et al 2017;cf. OSIRIS-Rex;Dworkin et al 2017).…”

Section: Future Workmentioning

confidence: 99%

Further characterization of carbonaceous materials in Hayabusa‐returned samples to understand their origin

Uesugi

Ito

Yabuta

et al. 2019

Meteorit & Planetary Scien

Self Cite

View full text Add to dashboard Cite

Carbonaceous materials in the sample catcher of the Hayabusa spacecraft were assigned as category 3 particles. We investigated the category 3 particles with a suite of in situ microanalytical methods. Possible contaminants collected from the cleanrooms of the spacecraft assembly and extraterrestrial sample curation center (ESCuC) were also analyzed in the same manner as category 3 particles for comparison. Our data were integrated with those of the preliminary examination team for category 3 particles. Possible origins for the category 3 particles include contamination before and after the operation of the Hayabusa spacecraft.

show abstract

Mineralogy of Returned Sample from C-Type Near-Earth Asteroid (162173) Ryugu

Tachibana

2023

Celebrating the International Year of Mineralogy

View full text Add to dashboard Cite

Hayabusa2 Sampler: Collection of Asteroidal Surface Material

Cited by 90 publications

References 20 publications

Numerical modelling of medium-speed impacts on a granular surface in a low-gravity environment application to Hayabusa2 sampling mechanism

Numerical modelling of medium-speed impacts on a granular surface in a low-gravity environment application to Hayabusa2 sampling mechanism

Further characterization of carbonaceous materials in Hayabusa‐returned samples to understand their origin

Mineralogy of Returned Sample from C-Type Near-Earth Asteroid (162173) Ryugu

Contact Info

Product

Resources

About