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Space Science Reviews

, Volume 208, Issue 1–4, pp 165–186 | Cite as

The Small Carry-on Impactor (SCI) and the Hayabusa2 Impact Experiment

  • T. SaikiEmail author
  • H. Imamura
  • M. Arakawa
  • K. Wada
  • Y. Takagi
  • M. Hayakawa
  • K. Shirai
  • H. Yano
  • C. Okamoto
Article

Abstract

Hayabusa2 is a sample return mission of JAXA launched on 3 December 2014. Hayabusa2 is the successor of Hayabusa, which returned samples from the asteroid Itokawa to the Earth. Although the design of Hayabusa2 follows that of Hayabusa, the former is equipped with some new components. The small carry-on impactor (SCI) is one of those components. The SCI is a compact kinetic impactor designed to remove the asteroid surface regolith locally and create an artificial crater. One of the most important scientific objectives of Hayabusa2 is to investigate the chemical and physical properties of the internal materials and structures of the target body, asteroid Ryugu. Hayabusa2 will attempt to observe the resultant crater with some scientific instruments and to get samples from around the crater. High kinetic energy is required to create a meaningful crater, however, the impact system design needs to fit within strict constraints. Complicated functions, such as a guidance and control system, are not permitted. A special type of shaped charge is used for the acceleration of the impactor of the SCI in order to make system simpler. Using this explosion technique makes it possible to accelerate the impactor very quickly and to hit the asteroid without a guidance system. However, the impact operation will be complicated because the explosive is very powerful and it scatters high-speed debris at the detonation. This paper describes an overview of the SCI system, the results of the development testing and an outline of the impact experiment of the Hayabusa2 mission.

Keywords

Hayabusa2 Asteroid exploration Small carry-on impactor Impact experiment Artificial crater Shaped charge 

References

  1. M. Abe, Y. Takagi, K. Kitazato, S. Abe, T. Hiroi, F. Vilas, B.E. Clark, P.A. Abell, S.M. Lederer, K.S. Jarvis, T. Nimura, Y. Ueda, A. Fujiwara, Near-infrared spectral results of asteroid Itokawa from the Hayabusa spacecraft. Science 312, 1334–1338 (2006) ADSCrossRefGoogle Scholar
  2. M. Abe, K. Kawakami, S. Hasegawa, D. Kuroda, M. Yoshikawa, T. Kasuga, K. Kitazato, Y. Sarugaku, D. Kinoshita, S. Miyasaka, S. Urakawa, S. Okumura, Y. Takagi, N. Takato, T. Fujiyoshi, H. Terada, T. Wada, Y. Ita, F. Vilas, P.R. Weissman, Y.J. Choi, S. Larson, S.J. Bus, A. Tokunaga, T.G. Muller, Ground-based observational campaign for asteroid 162173 1999 JU3, in 37th COSPAR Scientific Assembly, Montréal, Canada (2008) Google Scholar
  3. M. Arakawa, K. Wada, T. Saiki, T. Kadono, Y. Takagi, K. Shirai, C. Okamoto, H. Yano, M. Hayakawa, S. Nakazawa, N. Hirata, M. Kobayashi, P. Michel, M. Jutzi, H. Imamura, K. Ogawa, N. Sakatani, Y. Iijima, R. Honda, K. Ishibashi, H. Hayakawa, H. Sawada, Scientific objectives of Small Carry-on Impactor (SCI) and Deployable Camera 3 Digital (DCAM3-D): observation of an ejecta curtain and a crater formed on the surface of Ryugu by an artificial high-velocity impact. Space Sci. Rev. (2016), submitted to the same special issue. doi: 10.1007/s11214-016-0290-z Google Scholar
  4. W.H. Blume, Deep impact mission design. Space Sci. Rev. 117, 23–42 (2005) ADSCrossRefGoogle Scholar
  5. A. Fujiwara, J. Kawaguchi, D.K. Yeomans, M. Abe, T. Mukai, T. Okada, J. Saito, H. Yano, M. Yoshikawa, D.J. Scheeres, O. Barnouin-Jha, A.F. Cheng, H. Demura, R.W. Gaskell, N. Hirata, H. Ikeda, T. Kominato, H. Miyamoto, A.M. Nakamura, R. Nakamura, S. Sasaki, K. Uesugi, The rubble-pile asteroid Itokawa as observed by Hayabusa. Science 312, 1330–1334 (2006) ADSCrossRefGoogle Scholar
  6. S. Hasegawa, T.G. Müller, K. Kawakami, T. Kasuga, T. Wada, Y. Ita, N. Takato, H. Terada, T. Fujiyoshi, M.A. Albedo, Size, and surface characteristics of Hayabusa2 sample-return target 162173 1999 JU3 from AKARI. Publ. Astron. Soc. Jpn. 60(SP2), S399–S405 (2008) ADSCrossRefGoogle Scholar
  7. T.-M. Ho, R. Findlay, C. Ziach, C. Krause, M. Lange, J. Reill, M. Deleuze, S. Ulamec, J. Biele, R. Jaumann, J.P. Bibring, K.-H. Glaßmeier, M. Grott, M.H. Kuninaka, M. Yoshikawa, T. Okada, T. Yoshimitsu (the MASCOT Team), MASCOT (Mobile Asteroid Surface Scout)—developing a landing platform with four instruments for the Hayabusa-2 mission, in 45th Lunar Planetary Conference, Houston, TX, USA (2014) Google Scholar
  8. H. Kato, C. Okamoto, T. Saiki, Numerical investigation of impactor design for Hayabusa2, in Proceedings of the 4th International Symposium on Energetic Materials and Their Applications, 17-PP-12 (2011) Google Scholar
  9. T. Kubota, M. Otsuki, T. Hashimoto, Touchdown dynamics for sample collection in Hayabusa mission, in 2008 IEEE International Conference on Robotics and Automation (2008) Google Scholar
  10. C. Lange et al., Baseline Design of a Mobile Asteroid Surface Scout (MASCOT) for the Hayabusa 2 mission, in Proceedings of IPPW-7 (2010) Google Scholar
  11. C. Okamoto, T. Saiki, H. Kato, Numerical research of the flying plate detonator, in Proceedings of the 4th International Symposium on Energetic Materials and Their Applications, 16-H3-2 (2011) Google Scholar
  12. J. Saito, H. Miyamoto, R. Nakamura, M. Ishiguro, T. Michikami, A.M. Nakamura, H. Demura, S. Sasaki, N. Hirata, C. Honda, A. Yamamoto, Y. Yokota, T. Fuse, F. Yoshida, D.J. Tholen, R.W. Gaskell, T. Hashimoto, T. Kubota, Y. Higuchi, T. Nakamura, P. Smith, K. Hiraoka, T. Honda, S. Kobayashi, M. Furuya, N. Matsumoto, E. Nemoto, A. Yukishita, K. Kitazato, B. Dermawan, A. Sogame, J. Terazono, C. Shinohara, H. Akiyama, Detailed images of Asteroid 25143 Itokawa from Hayabusa. Science 312, 1341–1344 (2006) ADSCrossRefGoogle Scholar
  13. H. Sawada, K. Ogawa, K. Shirai, S. Kimura, Y. Hiromori, Y. Mimasu (DCAM3 Development Team), Deployable Camera (DCAM3) system for observation of Hayabusa2 impact experiment. Space Sci. Rev. (2016), submitted to the same special issue Google Scholar
  14. P.H. Schultz, B. Hermalyn, J. Veverka, The deep impact crater on 9P/Tempel-1 from Stardust-NExT. Icarus 222, 502–515 (2013) ADSCrossRefGoogle Scholar
  15. S. Tachibana et al., Hayabusa2: scientific importance of samples returned from C-type near-Earth asteroid (162173) 1999 JU3. Geochem. J. 48, 571 (2014) CrossRefGoogle Scholar
  16. Y. Tsuda, M. Yoshikawa, M. Abe, H. Minamino, S. Nakazawa, System design of the Hayabusa2—asteroid sample return mission to 1999 JU3. Acta Astronaut. 91, 356 (2013) ADSCrossRefGoogle Scholar
  17. J. Wu, J.B. Liu, Y.X. Du, Experimental and numerical study on the flight and penetration properties of explosively-formed projectile. Int. J. Impact Eng. 34, 1147–1162 (2007) CrossRefGoogle Scholar
  18. H. Yano, T. Kubota, H. Miyamoto, T. Okada, D. Scheeres, Y. Takagi, K. Yoshida, M. Abe, S. Abe, O. Barnouin-Jha, A. Fujiwara, S. Hasegawa, T. Hashimoto, M. Ishiguro, M. Kato, J. Kawaguchi, T. Mukai, J. Saito, S. Sasaki, M. Yoshikawa, Touchdown of the Hayabusa spacecraft at the Muses Sea on Itokawa. Science 312, 1350–1353 (2006) ADSCrossRefGoogle Scholar
  19. M. Yoshikawa et al., (Hayabusa2 project team), Outline of the next asteroid sample return mission of Japan—Hayabusa2, in Proceedings of 28th International Symposium on Space Technology and Science, 2011-k-19 (2011) Google Scholar
  20. M. Yoshikawa, S. Watanabe, Y. Tsuda, H. Kuninaka (Hayabusa2 project team), Hayabusa2—the next asteroid sample return mission of Japan. Trans. JSASS Aerosp. Technol. Jpn. 12(ists29), 29–33 (2014) CrossRefGoogle Scholar
  21. T. Yoshimitsu, T. Kubota, T. Adachi, Y. Kuroda, Advanced robotic system of hopping rovers for small solar system bodies, in 11th International Symposium on Artificial Intelligence, Robotics and Automation in Space, 06A-01 (2012) Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • T. Saiki
    • 1
    Email author
  • H. Imamura
    • 1
  • M. Arakawa
    • 2
  • K. Wada
    • 3
  • Y. Takagi
    • 4
  • M. Hayakawa
    • 1
  • K. Shirai
    • 1
  • H. Yano
    • 1
  • C. Okamoto
    • 2
  1. 1.Japan Aerospace Exploration AgencySagamiharaJapan
  2. 2.Graduate School of ScienceKobe UniversityKobeJapan
  3. 3.Planetary Exploration Research CenterChiba Institute of TechnologyNarashinoJapan
  4. 4.Aichi Toho UniversityNagoyaJapan

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