SPACECRAFT ENGINE UNIT PROPELLANT TANK PRESSURIZATION SYSTEM Russian patent published in 2001 - IPC

FIELD: spacecrafts. SUBSTANCE: proposed propellant tank pressurization system of spacecraft has on-board compressor connected by high- and low-pressure pneumatic main lines with pressurization cylinders and gas spaces of propellant tank, respectively. Propellant tank pressurization system is furnished additionally with check valve and reservoir connected through restrictor to high-pressure pneumatic main line between newly introduced check valve and on-board compressor. Restrictor and check valve are installed at on- board compressor outlet. EFFECT: provision of propellant tank pressurization system of high survivability and reliability at orbital flight. 1 dwg