Propellant storage tank for space vehicle ground test

Abstract

The invention discloses a propellant storage box for a spacecraft ground test. The propellant storage box comprises a storage box outer shell, a liquid cavity cylinder body, an anti-revolving and anti-shaking component and a fixed component. One end of the storage box outer shell is opened, the liquid cavity cylinder body is used for storing propellant, and the liquid cavity cylinder body, the anti-revolving and anti-shaking component and the fixed component are arranged inside the storage box outer shell. The upper end of the fixed component is fixed at the position of the opening of the storage box outer shell. The lower end of the fixed component penetrates through the storage box outer shell to be inserted into the liquid cavity cylinder body. An elastic element is transversely arranged at the gap position between the fixed component and the liquid cavity cylinder body. The lower end of the liquid cavity cylinder body is directly fixed with the storage box outer shell. The anti-revolving and anti-shaking component is further arranged at the lower end of the liquid cavity cylinder body. According to the technical scheme, the propellant storage box for the spacecraft ground test has the advantages of being simple in structure, reasonable in technology, light and handy in mass, low in manufacturing cost, capable of adjusting the volume of the injected propellant as needed, quite flexible in use, capable of being suitable for wide-angle shaking, and quite firm in structure.

Description

technical field [0001] The invention relates to the technical field of space vehicles, in particular to a propellant storage tank for space vehicle ground tests. Background technique [0002] The invention relates to a large-size propellant storage tank, which is suitable for propellant storage and supply during the ground test of space vehicles. The ground test of the space vehicle is to verify the flight performance of the product, and there are the following technical difficulties: In order to ensure that the structure of the whole device does not change much, the shape and structure of all products are required to be consistent with the flight product; To adapt to the gravitational force of the earth; multiple filling tests are required; during the test, the whole device tilts and shakes violently; the propellant will spin due to the rotation of the earth. If a storage tank without a management device is selected, it cannot adapt to changes in the flight angle and shaki...

AI Technical Summary

Problems solved by technology

If a storage tank without a management device is selected, it cannot adapt to changes in the flight angle and shaking of the aircraft, which will cause air entrainment in the propellant output from the storage tank; if surface tension, metal diaphragms and other devices are selected in the space vehicle ground test, they are different. There are some limitations to a certain extent: complex structure and process, high manufacturing cost, poor adaptability to mechanical environment, limited propellant output flow, unable to realize the functions of multiple filling and variable filling volume

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