Computer Science – Performance
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.556e...3g&link_type=abstract
Proceedings of the 3rd European Workshop on Hydrazine (ESA SP-556). 9 June 2004, Chia Laguna (Cagliari), Sardinia, Italy. Editor
Computer Science
Performance
Scientific paper
Many monopropellant thrusters use a catalyst for decomposing the propellant, hydrazine. The catalyst directly affects the thruster performance and lifetime. Therefore, it is important to confirm that the catalyst is suitable for our thrusters. Until 2002, we used Shell405 catalyst for satellite and H-IIA launch vehicle upperstage RCS thrusters. In 2002, however, Shell Chemical Inc. ceased manufacturing Shell405 catalyst and transferred the product to AEROJET, where it was renamed S405. We found KC12GA (Hydrazine decomposition catalyst, manufactured by Solvay, Belgium) as well as S405 and checked physical properties of KC12GA and S405. We then conducted a series of spontaneous tests, including life firing tests on various monopropellant thrusters (20N, 4N and 1N) loaded with KC12GA. The result showed that KC12GA was compatible with Shell 405, and that thrusters with KC12GA might have longer life than thrusters with Shell 405. This paper reports our comparison of Shell 405 and KC12GA applied to JAXA/lA monopropellant thrusters.
Goto D.
hattori Akio
Kagawa H.
Kajiwara Kenji
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