Japan Geoscience Union Meeting 2014

Presentation information

Oral

Symbol U (Union) » Union

[U-06_28AM2] New Progress toward the Understanding of Small Solar System Bodies

Mon. Apr 28, 2014 11:00 AM - 12:45 PM 503 (5F)

Convener:*Masahiko Arakawa(Graduate School of Science, Kobe University), Taishi Nakamoto(Tokyo Institute of Technology), Sei-ichiro WATANABE(Division of Earth and Planetary Sciences, Graduate School of Science, Nagoya University), Masanao Abe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), MASATERU ISHIGURO(Department of Physics and Astronomy, Seoul National University), Chair:Taishi Nakamoto(Tokyo Institute of Technology)

11:30 AM - 11:45 AM

[U06-09] The final impact tests of Small Carry-on Impactor(SCI) equipped on HAYABUSA-2

*Masahiko HAYAKAWA1, Takanao SAIKI1, Hiroshi IMAMURA2, Kei SHIRAI2, Koji WADA3, Masahiko ARAKAWA4, Chisato OKAMOTO2, Yuichi TSUDA1, Yasuhiko TAKAGI5, Toshihiko KADONO6, Satoru NAKAZAWA2, Yuichi IIJIMA1, Hajime YANO2, Hideo KAMITOMAI7, Shinichi MATSUZAKI7 (1.ISAS/JAXA, 2.JSPEC/JAXA, 3.Planetary Exploration Research Center/Chiba Institute of Technology, 4.Graduate School of Science, Kobe University, 5.Aichi Toho University, 6.University of Occupational and Environmental Health, 7.NIPPONN KOHKI Co. ltd)

Keywords:HAYABUSA-2, Small Carry-on Impactor, impact experiment, crater, explosion

HAYABUSA-2(the next Japanese Aseroid Sumple Return Explorer) is now at the final integrated test. Before this test, all sub-systems experienced final test individually. The Small Carry-on Impactor:SCI has been adopted the new sub-system of HAYABUSA-2, it is one of the self forging fragment which will be able to eject the 2kg projectile by 2km/sec velocity by detonation. In this paper we show the outline and results of the final performance test of the SCI explosive part on Oct. 2013. The test bodies have be made by the same rot of flight model, and experienced environmental stress tests. The projectiles formed explosion impacted on the sand target and made craters. A point of view of understunding of impact phenomina, these tests are larger scale impact experiments than thats made in labolatory, between space scale and labolatory scale. Therefore we observed and measured the crater formation prosesses by two high-speed video cameras, a infrared video camera, accelerometers, geophons, and digital handy video cameras. We succeeded to obtaine five cratering prosesses.