Zero-expansion flexible damping supporting device of space reflector

Abstract

Provided is a zero-expansion flexible damping supporting device of a space reflector. The zero-expansion flexible damping supporting device of the space reflector comprises reflector connection blocks (2), zero-expansion flexible damping rod assemblies (3) and substrate connection connectors (4), wherein the zero-expansion flexible damping rod assemblies (3) are in six groups, every two groups of the zero-expansion flexible damping rod assemblies form a bipod configuration, the included angle of 120 degrees is formed between every two bipod configurations, and the bipod configurations are distributed on the bottom face of the reflector (1). Each zero-expansion flexible damping rod assembly (3) comprises an upper connection rod (31), a lower connection rod (32), an upper sleeve (33), a lower sleeve (34), an upper connection board (35), a lower connection board (36), a damping barrel (37) and a damping rubber layer (38). The supporting device achieves good unloading of quasi-static and fixed support on the assembly errors and thermal deformation through the zero-expansion flexible design, and meanwhile through the operation of materials of different expansion factors, approximately-zero deformation of flexible rods is achieved under different temperature working conditions; the response magnification times of the reflector (1) are reduced by damping, and the structural intensity is prevented from being damaged and losing efficacy.

Description

technical field [0001] The invention belongs to the technical field of aerospace optical remote sensors, and relates to a support device applied to reflectors of aerospace optical remote sensors. Background technique [0002] Reflectors and their components play an important role in space remote sensors, and even affect the quality and success of the project. [0003] The use of discrete support technology can greatly reduce the weight of the mirror and its supporting structure components, and has been widely used in the development of space mirrors. For example, the typical foreign application is that the microcrystalline primary mirror assembly of Pleiades camera is supported by three-point Bipod, the weight of the assembly is less than 20kg, and the surface shape change caused by gravity in the horizontal direction of the optical axis is less than 15nmRMS. The application of large-aperture space mirrors includes the primary mirror of the Herschel space telescope, which h...

AI Technical Summary

Problems solved by technology

[0004] The technical solution of the present invention is to overcome the deficiencies of the prior art and provide a zero-expansion flexible damping support device for the space mirror, which can greatly reduce the damage caused by the harsh vibration environment on the basis of ensuring the high-precision surface shape of the mirror assembly. Respond to oversized problems, avoiding structural strength damage and failure

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