Astral lander tank propellant management device and manufacturing method thereof

Abstract

The invention provides a star lander storage box propellant management device and a manufacturing method thereof. The star lander storage box propellant management device comprises a supporting cover, a base, a damping management area, an internal net management layer and an external net management layer. The internal net management layer and the external net management layer are welded to the base. The internal net management layer is embedded in and sleeved with the external net management layer. Gas-liquid mixed propellant of the damping management area is drained to the external net management layer, becomes single-phase liquid propellant after being subjected to gas-liquid separation through the external net management layer, and enters an external net management area formed by the external net management layer. The single-phase liquid propellant flows to an internal net management area formed by the internal net management layer through the internal net management layer and is then discharged out of a storage box. Before the external net management layer loses efficacy, the internal net management layer is completely soaked in the propellant, and therefore the constant flowing area of the internal net management layer and low flow resistance generated when liquid passes through a net under large flow are ensured. The internal net management area is completely in the liquid-full state in the drainage process before the internal net management layer loses efficacy, and therefore it is prevented that gas is sucked into a liquid path outlet due to rotational flow when large-flow discharge is conducted, and it is ensured that the air-assistance-free propellant is reliably supplied to an engine.

Description

technical field [0001] The invention relates to the field of space vehicle power system equipment, in particular to a surface tension propellant management device which is applied to astral landers and requires light weight, large flow, low flow resistance and high discharge efficiency. Background technique [0002] At present, the tank propellant management device in the space vehicle power system is mainly used to manage the propellant in the microgravity environment, separate the liquid propellant and the pressurized gas, and ensure that the storage tank discharges the set flow rate without entrainment and pressure. The disturbed propellant is fed to the engine. The propellant storage tank mainly adopts two management methods to physically isolate the gas and liquid with a diaphragm or to separate the gas and liquid by using the surface tension of the liquid. These two management methods have their own advantages and disadvantages. Among them, the liquid surface tension ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a propellant management device for astral lander storage tanks and a manufacturing method thereof, which adopts a surface tension propellant management structure of a net-type and plate-type composite structure to achieve large flow and low flow resistance and high discharge efficiency, solving the problems of poor adaptability to the mechanical environment of large-area mesh, poor welding process performance of large-area mesh, and low discharge efficiency of existing management devices when discharging large flows.

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