PRESSURIZATION SYSTEM FOR SPACECRAFT ENGINE PLANT PROPELLANT TANKS (FUEL TANKS AND OXIDIZER TANKS) Russian patent published in 1999 - IPC

FIELD: space engineering. SUBSTANCE: pressurization system includes pneumatic mains connected with pressurization bottles and gas cavities of propellant tanks (fuel tanks and oxidizer tanks); each pneumatic main is provided with start and cutoff valve and gas pressure- reducing valve mounted in series. Pneumatic mains are additionally provided with nonadjustable throttling devices and safety valves; throttling devices are fitted before gas pressure-reducing valves and safety valves are fitted after them. Critical section area of throttling device is determined by expression protected by invention. Measures are taken to exclude spreading of high of high-pressure gas into gas cavities of propellant tanks in case of derangement of gas pressure- reducing valve, thus keeping the propellant tanks intact. EFFECT: enhanced reliability of pressurization system in space flight. 1 dwg