A floating support device for ground gravity unloading of space optical load

Abstract

The invention relates to the technical fields of precision machinery and space optics, and specifically discloses a floating support mechanism for gravity unloading of space optical loads on the ground, including an unloading base, several groups of gravity unloading devices arranged on the unloading base, and the gravity unloading devices are fixed on Below the optical load; the floating support device also includes several sets of fixed support devices arranged on the back of the optical load. Through the gravity unloading device, the gravity unloading along the gravity vector direction can be realized, thereby offsetting the maximum deformation of the large optical-mechanical structure caused by gravity. It can greatly alleviate the impact of the inconsistency of the space-terrestrial mechanical environment on the ground adjustment accuracy of space optical payloads and the quality of on-orbit imaging, and provide basic image quality for the pre-installation and adjustment of highly sensitive optical components on the ground and active optical correction. In addition, through ground gravity unloading, it can also greatly reduce the unnecessary design redundancy of the optical-mechanical structure of the large-caliber optical load, and reduce the launch cost and the use efficiency of space vehicles.

Description

technical field [0001] The invention relates to the technical fields of precision machinery and space optics, in particular to a floating support mechanism for large-diameter space optical loads to be unloaded by gravity on the ground. Background technique [0002] A space optical telescope is a type of space optical payload mounted on a satellite platform for imaging and measuring various astronomical phenomena in the universe, or for push-broom or staring observation of ground objects. For example, the well-known Hubble Telescope and WordView earth observation satellites are equipped with such space optical telescopes for optical imaging of various astronomical phenomena or ground scenes. All kinds of space optical loads ultimately work in the microgravity environment of space, but the installation and testing of optical loads are carried out on the ground, and gravity will accompany the entire installation and testing process. This leads to the inconsistency between the ...

AI Technical Summary

Problems solved by technology

[0009] The invention aims to overcome the defects that the large-aperture, long-focus space optical telescope is installed and adjusted on the ground, and the internal deformation caused by gravity will rebound after the gravity is released in the orbit, resulting in changes in the position and orientation of optical components and low imaging quality.

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