Dynamic Solubility of Pressurised He in Liquid Propellants in Closed Storage Tanks

Details Dynamic Solubility of Pressurised He in Liquid Propellants in Closed Storage Tanks Dynamic Solubility of Pressurised He in Liquid Propellants in Closed Storage Tanks

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e.111j&link_type=abstract

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

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Up to now the solubility limits of most pressurant- propellant combinations have been identified, but the mechanism describing the solubility in function of time in closed propellant tanks has been without definite characterization. The solubility of a pressurised gas into liquid propellant creates pressure decay in a closed propellant tank after pressurisation. This paper presents the theory of dynamic gas solubility and its applications to current space programs. The parameters and variance of the dynamic solubility have been extracted from measured pressure decay data from the 4 ESA Cluster spacecraft and a number of American spacecrafts and implemented to predict the pressure decay in liquid MMH- and MON- propellant tanks of the ESA MSG and Rosetta spacecraft.

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