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Description
Liquid hydrogen advances as vehicular fuel emphasizes the need for continuous and reliable fuel gauging systems in dynamic environments. More specifically there is a need for reliable comparisons and verifications of various fuel level system technologies. To address this need, an existing 180L liquid hydrogen dewar was retrofitted for the simultaneous comparisons between modular liquid level probes. A GM cryocooler mounted on the custom dewar neck allows for variation of subcooling and management of ullage conditions within the dewar under static conditions. To simulate dynamic slosh conditions, a servomotor will be utilized to oscillate the dewar at a frequency conducive to sloshing. This paper describes the integrated design and safety plan of the facility, including theoretical performance estimates of cool down and sloshing, in addition to Failure Modes and Effects Analysis in advance of system construction and commissioning.
