High-stability supporting structure applied to long-strip-shaped space reflector

A technology of supporting structure and mirror, applied in the field of aerospace optical remote sensor, can solve the problem of instability of the supporting structure of the mirror, and achieve the effects of good environmental adaptability, wide application range and high reliability

Active Publication Date: 2020-11-27
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this support structure, the long strip mirror can achieve second-level stability, and has good resistance to mechanical environments. It can maintain high surface accuracy of the mirror in harsh mechanical environments, and solve the problem of poor support structure of the mirror. stability problem

Method used

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  • High-stability supporting structure applied to long-strip-shaped space reflector
  • High-stability supporting structure applied to long-strip-shaped space reflector
  • High-stability supporting structure applied to long-strip-shaped space reflector

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Experimental program
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Effect test

Embodiment 1

[0036] The reflector supported by the elongated reflector support structure in the present invention is an off-axis reflector with a diameter of 505mm×235mm and an operating temperature of 20±2°C, including a frame 1, a central support 3, a side support 4, an upper Support 5, lower support 6 and 8 auxiliary glue points 7, such as figure 1 shown.

[0037] According to the principle of kinematics, the constraint of six degrees of freedom of the mirror is realized. The central support 3 is located at the center of the reflector 2, inserted from the back of the reflector 2 to play a supporting role, and the other supports are all inserted from the side of the reflector to play a supporting role.

[0038] The support point of the central support 3 coincides with the center of mass of the reflector 2, and its axis is parallel to the optical axis, so as to realize the constraint on the translation of the long axis and short axis of the reflector 2; the side support 4 is inserted fro...

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Abstract

The invention relates to a high-stability supporting structure applied to a long-strip-shaped space reflector. The high-stability supporting structure comprises a mirror frame, a center support, sidesupports, an upper support and a lower support. A reflector is installed in the mirror frame, and the center support is located in the center of the reflector. The side supports are inserted into thereflector from the sides of the mirror frame; the upper support and the lower support are respectively inserted into the reflector from the side surfaces of the mirror frame and are positioned on theother sides of the surface supports, and axes of the upper support and the lower support are overlapped; the upper support and the lower support are symmetrically arranged with the long axis of the reflector as the symmetry axis. By the adoption of the supporting structure, the long-strip-shaped reflector can achieve second-level stability; meanwhile, the good mechanical environment resistance isachieved, high reflector surface shape precision can be kept in a severe mechanical environment, and the problem that a reflector supporting structure is unstable is solved.

Description

technical field [0001] The invention relates to a support structure for a long-strip space reflector of an aerospace remote sensor, belongs to the technical field of aerospace optical remote sensors, and can improve the stability of the space reflector. Background technique [0002] In recent years, the remote sensing technology for space earth observation has developed rapidly, and the off-axis three-mirror space camera has become an important optical instrument for space exploration. The mirror assembly is one of the core components of the off-axis three-mirror space camera, and the surface shape accuracy of the mirror directly affects the imaging quality of the camera. The off-axis three-mirror optical system is composed of three mirrors, of which the main mirror and the third mirror are generally elongated. Compared with the coaxial camera, the light aperture of the mirror is relatively large. During the process from development to on-orbit use of the reflector assembly...

Claims

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Application Information

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IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 张楠庞寿成黄颖李庆林常君磊张凤芹于生全魏志勇王媛媛杨沐赵南王春雨王聪
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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