Propellant acquisition vane (PAV) is a key part of vane type surface tension tank (STT) and is mostly used to transmit fluid under microgravity environment, its transmission performance will determine fluid management of STT. In present paper, a ribbon type PAV with hems on both sides is conceptually designed, and its transmission performance has been analyzed based on four configuration parameters of its section form, which are flat part breadth, hems’ height, hems’ angle and separation distance between PAV and inner wall of STT. The laws of the effects of four configuration parameters on PAV’s transmission performance have been obtained and a set of most optimized configuration parameters has been given. Then transmission performance of the PAV whose configuration parameters of section form are the set of optimized parameters has been studied in-depth. Our results revealed that the optimized PAV is able to meet orbital demand of gas-free propellant completely during the end of STT’s life under harsh microgravity environment. On the basis of analyzed laws, microgravity environment has been conducted by the hundred meters drop tower tests, so the model test system with PAV is established and the campaigns have as objective to test the PAV’s fluid transmission performance under axial and lateral acceleration conditions. All these analyses and tests have been successfully conducted to demonstrate fluid transmission performance of such a PAV. According to present research, PAV with different section forms influences fluid transmission performance of STT remarkably. Thus, it is an effective way to control liquid transmission velocity by reasonably design of section form of PAV. Present research can not only provide a guideline for optimized design of new-style vane type fluid management assembly, but also present a new way for liquid control in space environment.

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