A Shape Memory Alloy Actuated Satellite Isolation Valve

Details A Shape Memory Alloy Actuated Satellite Isolation Valve A Shape Memory Alloy Actuated Satellite Isolation Valve

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..67m&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

Pyrotechnic actuated valves are currently used extensively in satellite chemical propulsion systems. These valves serve as isolation valves. They are single- use, of very high reliability, and used to initiate a propulsion system at the start of its propulsion mission or to "safe" it at the end of its mission life. A new type of valve is currently in its initial stages of development which aims to replace the pyro with a Shape Memory Alloy (SMA) actuator. This valve would give the same isolation performance, would work at high temperature up to 100°C, could be much slower limiting mechanical shocks, and be interchangeable with pyro-valves making substitution simple. This paper outlines the scope of this work.

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