AIR PRESSURIZATION SYSTEM OF FUEL TANKS OF SPACECRAFT

摘要

An air pressurization system of fuel tanks of a spacecraft comprises pneumatic lines connected to pressurization tanks and gas cavities of fuel tanks, valves mounted on a pneumatic line, an onboard compressor connected by pneumatic lines of high and low pressure cylinders with the pressurization tanks and gas cavities of fuel tanks respectively, gas regulators installed on each pneumatic line of low pressure and check valves installed on each pneumatic line of high pressure. The system is equipped with a pass line for each fuel tank, on which an uncontrolled throttle and two fine filters are installed the latter are mounted at the inlet and outlet of the throttle, while one end of each pass line is connected to the pneumatic line of low pressure at reducer inlet and the other end is connected to the pneumatic line of high pressure at the section between the outlet from the onboard compressor and check valves.