Satellite vacuum thermal test support

Abstract

The invention relates to a test bracket which is used in a satellite vacuum thermal test. The test bracket is an L-shaped framework structure, and the aim of adopting the framework structure is to reduce the barrier to the satellite body by the test bracket as much as possible. The bracket is formed by welding 1Cr18Ni9Ti rectangular steel tubes and can bear 1500kg of satellite weight. The A surface and the B surface of the bracket can both touch the ground, when the satellite is arranged in the bracket, the B surface touches the ground, and when the test is done in a space simulator, the A surface touches the ground. An installing flange in the B surface of the test bracket is connected with a satellite coupling flange by a coupling frame which adopts an inverted cone stainless steel truss structure in order to reduce the barrier to the heat dispersing surface of the satellite body, and moreover, the test bracket has the function of regulating the levelness of the satellite. The bracket increases the whole strength and stiffness of the bracket and can avoid violent sloshing of the satellite in the process of lifting and switching. In the test process, adopting the bracket can reduce the influence to the radiation on the surface of the satellite as much as possible and ensure the levelness index of the satellite within 1mm / 1m.

Description

technical field [0001] The invention belongs to the field of spacecraft vacuum heat test, in particular to a large-platform spacecraft heat test bracket. Background technique [0002] During the satellite vacuum thermal test, a special test bracket is required to carry the satellite. On the premise that the test bracket meets the internal space required for satellite installation, the following conditions should also be met in general: the shielding of the satellite body by the test bracket should be minimized; the A and B sides of the test bracket can be grounded to meet the requirements of the satellite at each stage. The need for attitude adjustment; the test bracket should have the function of adjusting the level of the satellite, so that the level of the satellite surface is within 1mm / 1m; the test bracket is generally made of stainless steel to ensure that the bracket has sufficient strength and stability in a vacuum and low temperature environment The test bracket sh...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome some problems existing in the prior art, and provide a kind of large platform spacecraft thermal test bracket, aim at solving the space vehicle vacuum thermal test bracket strength and rigidity not high in the vacuum thermal test, test bracket to satellite body This provides a technical guarantee for the reliability and accuracy of the spacecraft vacuum thermal test, simplifies the installation process of the satellite test, and reduces the occlusion of the test bracket to the satellite body while improving safety.

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