METHOD OF MAKING CONTROL OVER SPACECRAFT THERMAL CONTROL SYSTEM Russian patent published in 2013 - IPC B64G1/50 

FIELD: transport.

SUBSTANCE: invention relates to thermal control systems of, mainly, telecommunication satellites. Thermal control system liquid circuit assembled, it is flushed with clean solvent (isooctane) before tightness test. Then, said solvent is removed by blowing with compressed air and vacuum drying is carried out. For complete discharge of isooctane prior to liquid circuit vacuum drying, hydraulic accumulator temperature is measured and liquid circuit is evacuated for short term. Vacuum is defined by elasticity of hydraulic accumulator working fluid saturated vapors minus pressure corresponding to maximum rigidity of hydraulic accumulator bellow at complete expansion. Then, prior to vacuum drying, liquid circuit is additionally blown with compressed air to eliminate solvent in air at liquid circuit outlet.

EFFECT: complete removal of isooctane prior to liquid circuit vacuum drying.

5 dwg