FIELD: space engineering; manufacture and ground servicing of spacecraft temperature control systems.
SUBSTANCE: proposed method includes filling the evacuated hydraulic main of temperature control system with de-aerated heat-transfer agent by forcing it out of filling truck tank by pressure. First, pressure is built up in gas chamber of hydro-pneumatic compensator; this pressure exceeds pressure of pressurizing gas of filling truck tank. After forcing the heat-transfer agent into hydraulic main of temperature control system, gas chamber of hydro-pneumatic compensator is brought into communication with surrounding atmosphere and its liquid chamber is filled with heat-transfer agent. Then, maximum permissible pressure created above heat-transfer agent in filling truck tank is applied to system, after which minimum free volume of gas chamber of hydro-pneumatic compensator is measured and if measured volume coincides with specified magnitude, decision is made on complete filling of hydro-pneumatic compensator and temperature control system as a whole. Device proposed for realization of this method includes on-board valves and the following ground servicing facilities: filling truck with drain and filling mains, valve control units, vacuum unit, gas pressure source etc. Filling truck is provided with drainage tank connected with on-board and ground components by means of definite fittings. Ground servicing equipment includes reference reservoir fitted with absolute pressure gauge and communicated with atmosphere and on-board vent valve of gas chamber of hydro-pneumatic compensator by means of definite fittings.
EFFECT: improved quality of filling due to separate filling of hydraulic main of temperature control system and liquid chamber of hydro-pneumatic compensator.
3 cl, 1 dwg
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