METHOD OF FILLING SPACE ROCKET SYSTEM OXIDISER TANKS WITH LIQUID OXYGEN Russian patent published in 2012 - IPC B64G5/00 

FIELD: transport.

SUBSTANCE: invention relates to space engineering. Proposed system comprises multistage carrier rocket and accelerating unit. Carrier rocket top stage oxidiser tank is filled with boiling liquid oxygen while that of accelerating unit is filled with overchilled liquid oxygen. Both tanks are filled by integral onboard filling-draining line. In case carrier rocket is first filled then its top stage oxidiser tank is filled to first intermediate level to feed overchilled oxygen thereafter. Second intermediate level reached in said carrier rocket tank, it is sealed to feed overchilled oxygen into accelerating unit tank to reach preset minimum filling level. Then, boiling oxygen is fed into said line while with accelerating unit tank minimum designed level reached, said tank is sealed to fuel up carrier rocket top stage. In compliance with another version, accelerating unit tank is first fueled. Fueling over, overchilled oxygen is drained from said line to the level of unit of valves feeding boiling oxygen in said line. Carrier rocket tank is filled with boiling oxygen via the same line. Oxygen heating in accelerating unit is reduced by optimising overchilled oxygen filling flow rate.

EFFECT: increased payload, decreased losses of liquid oxygen.

2 cl, 1 dwg