Development of a Fluid Systems Servicer (FSS) for the International Space Station 972407

The Fluid Systems Servicer (FSS) is designed to drain, purge, fill, and recirculate fluids while performing on-orbit start-up, scheduled, and unscheduled maintenance for fluid lines on the International Space Station (ISS). The FSS will utilize space vacuum for purging operations, thus, providing essentially unpowered vacuum back-filling capability. There is also a fluids pump in the FSS which is used for draining and recirculating water. The recirculation mode fulfills an additional design requirement of removing gas bubbles by directing water through a static membrane separator. Several flex-lines and adapters which interface various ISS lines via self-sealing Quick Disconnects (QD), are part of the FSS assembly. The FSS has its own power cord enabling excellent transportability. This feature, as well as, the QD adapters, enables the FSS to be used anywhere on station for numerous servicing tasks.


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