FIELD: space engineering. SUBSTANCE: system has self-contained subsystems whose gas spaces communicate through supercharging lines incorporating check valves, pressure reducers, and starting/shutoff valves with gas cylinders; supercharging gas transfer compressor mounted in one of self-contained subsystems; and joining assemblies for self-contained subsystem lines. System is provided with additional high- and low-pressure gas transfer lines with starting/shutoff valves ensuring communication between gas cylinders and gas spaces of fuel tanks. Joining assemblies for self-contained subsystems have two pneumatic joints. Subsystem with compressor has its additional low- pressure line connected to compressor inlet and high-pressure line, to its outlet. Additional low-pressure lines of subsystem without compressor connected through first pneumatic joint to inlet of other subsystem compressor communicate with supercharging lines in regions between check valves and fuel tanks. Additional high- pressure lines are connected through second pneumatic joint to outlet of other subsystem compressor and communicate with supercharging lines in regions between gas cylinders and starting/shutoff valves. EFFECT: improved reliability and service life of propulsion unit incorporated in self-contained subsystem without compressor. 1 dwg
