FIELD: spacecraft temperature control systems; ground testing and servicing of spacecraft hydraulic systems.
SUBSTANCE: volume of filled line is localized before draining compensating dose of heat-transfer agent at isolating the hydraulic line from filling means. Then, pressure is measured in hydraulic line and atmospheric pressure is set twice in compensator gas cavity of temperature control system; different initial basic pressures are set in reference reservoir in turn. Said cavity and reservoir are brought in communication twice and steady-state averaged pressures are measured. Volume of undissolved gas is determined by respective formula on basis of measurements. Initial basic pressures in reference reservoir satisfy definite limitations in form of inequalities.
EFFECT: improved quality of filling due to enhanced accuracy of determination of undissolved gas volume and more accurate determination of volume of drained compensating dose of heat-transfer agent.
3 cl, 1 dwg
