Metal outer light shield used for earth synchronous orbit space optical remote sensor

A technology of space optical remote sensing and geosynchronous orbit, which is applied to the casing of the measuring device and other directions, and can solve problems such as burning the detector and affecting the imaging quality

Inactive Publication Date: 2017-03-08
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The geosynchronous orbit space optical remote sensor must stare at the earth when observing the earth. Midnight sunlight will directly enter the optical system and be absorbed by the structure to produce various thermal effects. At the same time, part of the light entering the optical path may become stray light, which will affect the imaging quality. burnout detector

Method used

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  • Metal outer light shield used for earth synchronous orbit space optical remote sensor
  • Metal outer light shield used for earth synchronous orbit space optical remote sensor
  • Metal outer light shield used for earth synchronous orbit space optical remote sensor

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Embodiment Construction

[0017] Below in conjunction with concrete principle and structure in above-mentioned " content of the invention ", have designed the outer shading cover of a geosynchronous orbit space optical remote sensor (as image 3 ). The main telescope of the remote sensor has a caliber of 300mm, and the front end is equipped with double scanning mirrors, which can realize the detection of ±10° observation field of view on the ground.

[0018] Such as figure 2 As shown, the exit width A=530mm, the hood height H=963.3mm, the shielding angle α=36°, and the entrance width B=869.7mm.

[0019] The aperture is made of aluminum alloy honeycomb core, size 4*0.04mm, area 2.15m 2 The wall of the cylinder is surrounded by aluminum alloy with a thickness of 0.8mm; the outer support truss includes two layers of ring belts and four straight bars, which are riveted with the wall of the cylinder together with the mounting flange.

[0020] The weight of the entire outer hood is 10kg, and the first-ord...

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Abstract

The invention discloses a metal outer light shield used for an earth synchronous orbit space optical remote sensor. The metal outer light shield is formed by a cylinder wall, a diaphragm, an outer support truss and an installation flange, which are made of aluminium alloy. The diaphragm is connected with the cylinder wall in welding, riveting and bonding manners. The cylinder wall is connected with the outer support truss in a riveting manner. The outer support truss is subjected to the lightweight design, so the rigidity of a thin wall aluminum structure is improved. An installation through hole or an installation countersink is arranged in the installation flange at the bottom. The whole assembly is installed on the main body of a space remote sensor through riveting or threads. Inorganic paint is painted on the outer surface of the whole light shield. Parasitic light eliminating paint is painted on the inner surface of the light shield. The metal outer light shield is advantageous in that: pollution possibly to space load by high-temperature high-vacuum degassing is avoided; andthe metal outer light shield has quite good specific stiffness and is suitable for space environment.

Description

technical field [0001] The invention relates to a metal outer shading cover for a geosynchronous orbit space optical remote sensor, in particular to a structural form and material, and is mainly used in a geosynchronous orbit space remote sensor. It fundamentally avoids the possible pollution of space load by high-temperature vacuum deflation. At the same time, the structure has better specific stiffness and can pass the space environment assessment. . Background technique [0002] The geosynchronous orbit space optical remote sensor must stare at the earth when observing the earth. Midnight sunlight will directly enter the optical system and be absorbed by the structure to produce various thermal effects. At the same time, part of the light entering the optical path may become stray light, which will affect the imaging quality. Burn out the detector. It is usually necessary to install an external light shield on the remote sensor, which can block or weaken the stray light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D11/24
CPCG01D11/24
Inventor 孙丽崴王战虎钱婧
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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