The propellant feed valves of a cryogenic rocket engine are usually opened some time before ignition to allow cold propellants to enter the engine feed system and reduce its temperature. This process is commonly known as chilldown. Numerical studies can support its optimization but often suffer from modeling difficulties and excessive run times. These disadvantages are partly circumvented by geometrically simplifying the fuel pump and using a computational fluid dynamics method to generate its chilldown performance map. In a second step, the map is used in a system simulation for a real upper stage, and the predictions are compared with flight data. The results mostly lie within a few percent of the latter.


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    Title :

    Dynamical Chilldown Model of a Liquid Hydrogen Feed System


    Contributors:

    Published in:

    Publication date :

    2013-07-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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