HELIOS1A EOL: A SUCCESS. FOR THE FIRST TIME A LONG FINAL THRUST SCENARIO, RESPECTING THE FRENCH LAW ON SPACE OPERATIONS

摘要

HELIOS1A End Of Live (EOL) operations occurred inrnthe early 2012. Through this EOL operation, CNESrnwanted to make an example of French Space Actrncompliance. Because the satellite wasn’t nativelyrndesigned for such an EOL phase, the operation wasrntouchy and risky. It was organized as a real full projectrnin order to assess every scenario details with dedicatedrnMission Analysis, to secure the operations throughrndetailed risk analysis at system level and to consider thernmajor failures that could occur during the EOL. A shortrnscenario allowing to reach several objectives withrnbenefits was eventually selected. The main objective ofrnthis project was to preserve space environment. Thernoperations were led on a “best effort” basis. The FrenchrnSpace Operations Act (FSOA) requirements were met:rnHELIOS-1A EOL operations had been led successfully.