CRYOGENIC STAGE Russian patent published in 2003 - IPC

FIELD: rocketry and space engineering; stabilization and drift of cryogenic stage from injected spacecraft. SUBSTANCE: proposed cryogenic stage has engine plant, propellant tanks, high-pressure bottles with pneumatic system for pressurization of tanks and nozzles communicated with tanks and pneumatic system. Longitudinal axis of cryogenic stage and axes of nozzles communicated with oxidizer tanks lie in one plane. Axes of said nozzles are symmetrical relative to longitudinal axis of cryogenic stage and are directed towards side opposite to nozzle of engine plant. Longitudinal axes of cryogenic stage and nozzles communicated with fuel tank also line in on plane. Nozzles are located symmetrically relative to longitudinal axis of cryogenic stage; their axes form right angle with said axis. Nozzles communicated with pneumatic system are located on side of plane running through centers of their critical sections. This plane is perpendicular to longitudinal axis of cryogenic stage and is directed to side opposite to engine plant. Axes of said nozzles lie in parallel planes and are deflected to opposite sides for forming stabilizing twisting of cryogenic stage together with its drift. Provision is made for use of remaining gases contained in tanks and in pneumatic system of cryogenic stage for creating thrust ensuring drift of cryogenic stage from spacecraft in stabilized state. EFFECT: enhanced economical efficiency and safety. 2 dwg