The effect of long-term storage orbit on a bipropellant pressure regulation system

Dynamic modeling and simulation of an integral bipropellant propulsion double-valve combined test system

“…Pressure reducing regulator (PRR) and check valve (CV) are two types of components widely applied to various liquid propulsion systems and energy systems [1][2][3][4][5][6][7][8][9]. The former is used to reduce the pressure of inlet high-pressure fluid to the defined value and stabilize it within a certain range; the latter is used to prevent reverse flow.…”

“…Its function is to check whether the performance of the two types of key components in the pressurization system can meet the design requirement before the propulsion system whole-system test. Common bipropellant propulsion tank pressurization systems [5][6][7][8][9] generally contain the PRR in the main pipeline of gas system and the CV in the tank pressurization pipeline. As other valves usually have no action any more since system startup up to system shutdown, the two types of key components are often a limited number of movable components in the gas system during the operation of propulsion system.…”

“…The CV, used for constraining the fluid flow in only one direction and preventing reverse flow, is widely applied to various fluid systems including aerospace propulsion systems [1,[3][4][5][6][7][8][9], electronic equipment [2], nuclear reactor systems [24][25][26], compressor station systems [27], mechanical system [28], oil or gas pipeline systems [29], heating, ventilation and air-conditioning (HVAC) systems [30][31][32][33][34], microfluidic systems [35,36] and so on. McElhaney [24] and Xu et al [25] classify the check valves applied in the nuclear industry into swing type, lift type, tilting disc type, double discs type, stop type, nozzle type and so on.…”

“…McElhaney [24] and Xu et al [25] classify the check valves applied in the nuclear industry into swing type, lift type, tilting disc type, double discs type, stop type, nozzle type and so on. According to this classification, the CV researched by this paper is a double-spool lift CV in aerospace propulsion system and a dual-poppet series-redundant assembly [6] in structure. McElhaney [24] also gives analysis on structures, advantages and disadvantages of four common check valves including swing CV, lift CV, tilting disc CV, double discs CV and summarizes such information as failure mode, failure cause, failure discovery method and failure area of all kinds of check valves.…”