A failure diagnostic system for a spacecraft liquid propulsion system having a plurality of thrusters and a supply pipe connected to the thrusters, is used to diagnose a failure in the spacecraft. The system includes a pressure sensor that detects an inner pressure of the supply pipe as time-series data, a frequency spectrum conversion unit that converts the time-series data into frequency spectrum data, a storage unit that stores the frequency spectrum data generated based on an analytical model by computer simulation or a test result of a testing device as a data set, a comparator that compares the data set with the frequency spectrum data, and a determining unit that determines a failure in any one of the plurality of thrusters based on the comparison.


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    Title :

    Failure diagnostic system for spacecraft liquid propulsion system and failure diagnostic method for spacecraft liquid propulsion system


    Contributors:
    KAWATSU KANAME (author) / NOUMI AI (author) / ISHIHAMA NAOKI (author) / NAGATA TAIICHI (author)

    Publication date :

    2025-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64G Raumfahrt , COSMONAUTICS / F02K JET-PROPULSION PLANTS , Strahltriebwerke



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