pressurant

The helium pressurant is not vented, but its pressure is reduced well below maximum operating pressures.
L'hélium utilisé comme gaz de pressurisation n'est pas purgé, mais sa pression est ramenée bien en-dessous des pressions d'utilisation maximales.
This small, mono-propellant hydrazine system is completely passivated with the elimination of any residual propellant and pressurant.
Il s'agit d'un petit système à monergol (hydrazine) que l'on soumet à une passivation complète en éliminant les restes éventuels du propergol et des gaz de pressurisation.
Following completion of the mission, the residual hypergolic propellants of the main propulsion system are burned to depletion, allowing the helium pressurant system to be partially relieved.
Après l'achèvement de la mission, les hypergols résiduels du système de propulsion principal sont éliminés par combustion, ce qui permet de réduire partiellement la pression du système de pressurisation à l'hélium.
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