关键词: 航天器推进;推进剂输送;非定常流;水冲击;动态特性;动力学仿真

Abstract: A series of tests using water as a reference fluid was performed in the laboratory experimental setup to ascertain the integrity of a feed system on board satellites subjected to water hammer effects It was concluded that such pressure surge may be as high as 7～8 times of tank pressure and should be given sufficient concern The test data were compared with that obtained using mathematical modeling The highly significant correlation between predictions and test results showed that the employed mathematical model was reasonably reliable

Key words: Spacecraft propulsion;Propellant transfer;Unsteady flow;Water impingement;Dynamic characteristic;Dynamic simulation