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2018/7/17(二)14:10綜合大樓3樓48312教室演講 : 小山孝一郎教授(Asia Space Environment Research Consortium, Kanagawa, Japan)

張貼者:2018年7月16日 上午1:59Ann-Chen Jang   [ 已更新 2018年7月16日 上午2:15 ]
Road to Venus mission in Japan
- from curiosity to the realization-

K.-.I. Oyama
1.Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan Taiwan.
2.International Center of Space Weather Study and Education Fukuoka, Japan
3.Asia Space Environment Research Consortium, Kanagawa, Japan

In 2015, One Japanese spacecraft was successfully injected into Venus Orbit after failure of orbit injection in 2010, and it became the first orbiter of other planet, which was named “Akatsuki” (暁、Dawn) after its successful injection. The history of Venus exploration are Venera 1-16 in 1961-1983 by USSR. Mariner 2, 5, and 10 by USA in 1962 -1973, Pioneer Venus by USA in 1987. Vega 1, 2 in 1984 by USSR, Magellan in 1989 by USA, and lastly Venus express in 2001 by ESA. We describe here a road to successful Venus mission. We start from the failure of orbit injection in 2010, and successful injection to Venus orbiter in 2015. Then we go back to the history before successful orbit injection. We had a dream to send a Venus probe in 1980’s. The questions we had are: Why Venus has super rotation, Does active volcano exist, Is there lightning ? Is there Aurora ? Why neutral density in the cryosphere suddenly disappears ? . To make our curiosity satisfy, we prepared for the mission, starting from analysis of data obtained  with Pioneer Venus, read thick summary book on Venus, and asked private company to start study in late 1980’s. We describe here phenomena which are still not understood. These include instruments to find the clues to solve the problems for Venus mission, and finally orbit selection the spacecraft which is constrained under the limited capability of launcher. Most important task was to find scientists who are keen to send a probe to Venus. Here is a story which we want to convey to young scientists.