Large-sized air-inflating thin film light-shielding cover structure with expanded space

Abstract

The invention discloses a large-sized air-inflating thin film light-shielding cover structure with expanded space. The large-sized air-inflating thin film light-shielding cover structure comprises a light-shielding cover base fixedly connected with a space camera base, and folding cylinders distributed along the light-shielding cover base; the folding cylinders are sleeved with an air-inflating pipe framework; the large-sized air-inflating thin film light-shielding cover structure also comprises adjusting rope-rods which are expanded and pulled on the surface of the air-inflating pipe framework and used for performing unfolding control of the air-inflating pipe framework, and a light-shielding thin film which is glued on the outer side of the air-inflating pipe framework to form rope net reinforcement of the light-shielding cover; and air-inflating tanks which are corresponding to and connected with the air-inflating pipe framework are arranged on the light-shielding cover base, wherein the air-inflating tanks and the folding cylinders on the light-shielding cover base are fixedly connected with the light-shielding cover base in a manner of inward arrangement in sequence based on the peak position of a regular n polygon in the radial direction. By adoption of the large-sized air-inflating thin film light-shielding cover structure, feedback control can be performed by only adjusting the rope length / rope force in the unfolding process, without needing other driving and sensing apparatuses; and in addition, the large-sized air-inflating thin film light-shielding cover structure has the advantages of simple structure, light weight, small size, low storage space requirement, low manufacturing cost and the like, and can satisfy the light weight requirement of a spacecraft.

Description

Technical field [0001] The invention relates to the technical field of a large-scale space expansion structure, in particular to a space-expandable large-scale inflatable film light shield structure. Background technique [0002] The hood is an important part of the optical system of a space camera. It can not only isolate the high-density heat flow received during observation, maintain the thermal stability of the space camera structure, but also prevent part of the air light and other stray light from entering the camera lens. Utilize the surface material characteristics to maximize the absorption of stray light entering the hood, ensure a higher imaging signal-to-noise ratio, and improve the camera's imaging quality. [0003] At present, the main hood structures are honeycomb sandwich type, built-in diaphragm type and thin-walled shell type. After analysis, it has been found that there are the following limitations: First, most hoods use metal, resin-based composite materials, e...

AI Technical Summary

Problems solved by technology

[0003] At present, the main sunshade structures include honeycomb sandwich type, built-in diaphragm type and thin-walled shell type. After analysis, it is found that there are the following limitations: First, most of the sunshades are made of metal, resin-based composite materials, etc. Rigid materials are used as the cover body, resulting in the problem that the size and weight of the hood are large, and the volume is still large after shrinkage; second, the hood uses mechanical expansion structures such as screw, space bracket, and tape spring, which leads to the structure of the hood. Complex; third, the traditional hood requires a variety of driving and sensing devices, and its control system is relatively complicated

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