Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..89g&link_type=abstract
Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard
Physics
Scientific paper
Hydrazine monopropellant thrusters are being widely loaded on many satellites. In Japan, several types of monopropellant thrusters were developed in the end of 1970s, and have been used for over 20 years. Mass and lifetimes of satellites have been increasing, however, thrusters lifetimes are deficient now, especially 1N-class thrusters. During firing tests, some miss-firing occurred and large voids were found out in thruster catalyst beds X-ray images. It is therefore, in order to collect information of voided catalyst bed, firing tests were conducted with a visualization thruster, which had silica glass catalyst bed. Our purposes are - To observe what happens in a voided catalyst bed, during firing. - To confirm the differences between under 1G and 0G environments for a voided thruster catalyst bed. - To confirm whether the present thruster ground firing tests method is suitable for estimating a thruster lifetime or not.
Goto D.
Kagawa H.
Kajiwara Kenji
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