Microgravity test verification method for accumulator performance in a plate-type propellant management device

Abstract

Provided is a method for verifying a performance microgravity test of a hydraulic accumulator in a plate-type propellant management device. The scale model components of hydraulic accumulators of different types are used as test objects, the microgravity test implementation method of the scale model components of different hydraulic accumulators of various types and the changing strategies of different conditions of a microgravity test are mainly designed in the test method, and test preparations, test procedures, a simulated liquid level height selecting strategy and the like are stipulated. The test method is reasonable in design, strong in operability and capable of achieving all the microgravity tests of the scale model components of the hydraulic accumulators, video recording is carried out on the whole process of accumulating liquid, and follow-up test result analysis and hydraulic accumulator optimization design are facilitated. According to the test method, the flow liquid management property and the liquid accumulating capacity of the model of the hydraulic accumulator can be obtained, and the performance of the hydraulic accumulator is verified.

Description

technical field [0001] The invention relates to a microgravity test verification method for the performance of a liquid accumulator, which is a part of a plate-type propellant management device (PDM). Microgravity tests of various accumulator scale models. Background technique [0002] With the rapid development of large-scale truss platform satellites in the world, propellant tanks using plate PMDs have become the mainstream in the world. Since the end of the "Eleventh Five-Year Plan", the development of large-capacity plate-type PMD propellant storage tanks has been carried out. The plate-type PMD prototype has been developed, and the ground demonstration test of the plate-type PMD fluid transmission performance and management performance has been carried out. This demonstration test can only verify the local performance of the plate-type PMD, and cannot truly reflect its ability to manage, control and transmit fluids using surface tension in a space environment. Therefo...

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Problems solved by technology

[0003] At the same time, since the development of plate-type PMD propellant storage tanks and related test verification technologies involve national security, countries that have mastered this technology often impose technical blockades. The information that can be provided by foreign countries is not comprehensive and can only serve as a reference. None of the related articles mentions the detailed test system design. For the mechanism research of plate-type PMD components, it is necessary to build a test system by itself, carry out a large number of microgravity tests, summarize the verification methods of microgravity tests, and obtain sufficient first-hand information. Basic information is impossible to obtain from foreign literature

[0004] In summary, a microgravity test verification method for the performance of a plate-type PMD-accumulator is the result of exploration and summary during the development of a large-capacity plate-type PMD propellant storage tank. The entire test method is brand new. There are no relevant literature and materials to learn from, and foreign countries rarely disclose similar test systems

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