Zero-expansion flexible damping supporting device of space reflector

Abstract

A zero-expansion flexible damping support device for a space reflector, comprising a mirror connection block (2), a zero-expansion flexible damping rod assembly (3), a substrate connection joint (4), and a zero-expansion flexible damping rod assembly (3). Six groups and each two groups form a bipod configuration, and the bipod configurations are distributed on the bottom surface of the reflector (1) at 120 degrees to each other. Each set of zero-expansion flexible damping rod components (3) includes an upper connecting rod (31), a lower connecting rod (32), an upper sleeve (33), a lower sleeve (34), an upper connecting plate (35), The lower connecting plate (36), the damping cylinder (37) and the damping rubber layer (38). The support device of the present invention achieves quasi-static support to unload assembly errors and thermal deformation through the zero-expansion flexible design, and at the same time ensures that the length of the flexible rod is approximately zero-deformed under different temperature conditions through the matching of materials with different expansion coefficients; The shock reduces the response magnification of the reflector (1), avoiding structural strength damage and failure.

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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