关键词: 航天飞行;推进剂储箱;推进剂控制

Abstract: Under microgravity condition, the main problem about liquid propellant management is to control the position of the liquid in the tank,so that the gas-free liquid propellant transfered to the engine is gas-free. For a kind of pear-shaped tank used in a spinnig stabilization satellite,a drop tower test was performed with ionless water as test media in a transparent plexiglass scale model. The interface shape between gas and liquid at the time after satellite saperating from the launcher and before the saellite spinning, the gas ingestion phenomena during liquid draining and the critical volume of the residue liquid when gas ingestion begin, to happen are determined by tests.A kind of large scale surface tension tank will be used in long life time satellite. Some fluid flow characters concerned will be tested under microgravity condition such as equilibrium position of the gas-liquid interface,expulsion efficiency,pressure loss and liquid slosh etc. to verify the design option.

Key words: Space flight;Propellant tank;Propellant Control