A Thermodynamic Vent System (TVS) to vent a liquid hydrogen tank in low gravity was designed and built by Sundstrand. The TVS was designed and built to a General Dynamic Space Systems Division (GDSSD) specification and was based on earlier laboratory work and design studies done by GDSSD for NASA. The TVS assures that superheated vapor is vented from the tank to control tank pressure with minimum loss of fuel. Major components of the TVS are a swirl flow heat exchanger, an electric motor-driven mixer pump, a fully redundant electronic inverter, and a redundant combined regulator and shutoff valve. The TVS has been extensively tested; the test results compare well with analytical predictions. This paper will describe the system and discuss the test results.


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    Title :

    A zero-gravity thermodynamic vent system for a liquid hydrogen tank


    Additional title:

    Thermodynamisches Entlueftungssystem eines Fluessigwasserstofftanks bei Schwerelosigkeit


    Contributors:
    Halsey, D. (author)

    Published in:

    SAE-Papers ; Jul ; 1-9


    Publication date :

    1987


    Size :

    9 Seiten, 13 Bilder, 3 Tabellen, 6 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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