Design and analysis of a liquid acquisition device and thermodynamic vent system for hydrogen in microgravity

Mark D. Thomas; J. Clair Batty; David W. Plachta

doi:10.1117/12.323727

17 September 1998 Design and analysis of a liquid acquisition device and thermodynamic vent system for hydrogen in microgravity

Mark D. Thomas, J. Clair Batty, David W. Plachta

Author Affiliations +

Proceedings Volume 3435, Cryogenic Optical Systems and Instruments VIII; (1998) https://doi.org/10.1117/12.323727
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Solar Thermal Propulsion systems require long-term storage of liquid hydrogen. NASA's Hydrogen On-Orbit Storage System experiment was intended to demonstrate technologies critical to this concept, including a LAD and TVS. This paper describes the analysis and re-design of the TVS to function in the small (80 liter) dewar designed by the Space Dynamics Laboratory at Utah State University in conjunction with the NASA Lewis Research Center. The re-design uses the same approach as the NASA design for a larger system. The heat exchanger and Joule-Thomson device in particular are addressed. The design theory of a LAD is also presented.

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Mark D. Thomas, J. Clair Batty, and David W. Plachta "Design and analysis of a liquid acquisition device and thermodynamic vent system for hydrogen in microgravity", Proc. SPIE 3435, Cryogenic Optical Systems and Instruments VIII, (17 September 1998); https://doi.org/10.1117/12.323727

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