Development of Ceramic Thruster for Spacecraft Propulsion System

Details Development of Ceramic Thruster for Spacecraft Propulsion System Development of Ceramic Thruster for Spacecraft Propulsion System

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..91t&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

Computer Science

Performance

Scientific paper

To enhance the space mission capabilities, it is required to make the propulsion system of spacecraft more reliable with higher performance. One of the most important parameters which indicates the performance of the propulsion system is specific impulse(Isp) of thruster. Most of current thrusters are made of metallic materials, i.e. superalloys, and their specific impulses are restricted to low values because of temperature limitation of the chamber materials. Moreover, metallic chamber requires to be coated to resist oxidization, which may invade the reliability of the thrusters, in some cases. To overcome this situation, studying the possibility of utilizing ceramics for the thrusters was started in 2000. 20N and 500N-class bipropellant thrusters whose chambers were made of Silicon Nitride(Si3N4) were developed and have been conducted hot firing tests successfully.

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