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.
Failure diagnostic system for spacecraft liquid propulsion system and failure diagnostic method for spacecraft liquid propulsion system
2025-05-20
Patent
Electronic Resource
English
European Patent Office | 2021
|European Patent Office | 2022
|European Patent Office | 2021
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