Ultraviolet resistant near space airship

Abstract

An ultraviolet resistant near space airship comprises an airship skin, the skin sequentially comprises a weatherproof layer, a primer layer, a load carrying layer, a cohesive layer, a helium barrier layer and a heat sealing layer, the heat sealing layer is a polyurethane film, the helium barrier layer selects an aluminized polyester (Al-PET) film, the cohesive layer is polycarbonate, the load carrying layer selects a PBO plain fabric, the primer layer is two-component epoxy polyamide, and the weatherproof layer is a nanometer fluorocarbon coating. The adoption of the nanometer fluorocarbon coating in the invention enhances the automatic cleaning effect, the ultraviolet resistance and the environmental protection capability of the weatherproof layer, and substantially enhances the weatherproof property of the airship skin. The invention also relates to a making method of the airship skin.

Description

technical field [0001] The invention relates to an airship, in particular to an ultraviolet-resistant near-space airship. Background technique [0002] The near-space airship is a new type of near-space multi-functional flying platform developed with the continuous development of science and technology. It is different from airplanes and low-altitude airships flying in the aviation layer, and also different from satellites working in low orbits. It has a very wide range of military and civilian values, such as in missile defense, anti-terrorism, communications, remote sensing, space observation and atmospheric measurement. etc. have great application value. However, the flying altitude of airships in near space is generally around 20km. The air in this area is thin, and the density is about 1 / 14 of the surface air density. Mainly UV-B, its spectrum ranges from 290 to 360nm, and the radiation intensity of ultraviolet rays, ozone and high-energy particles is much stronger th...

AI Technical Summary

Problems solved by technology

The multi-layers of the existing adjacent space airship skin usually use hot-melt coating technology or the way of coating rollers or the way of film bonding to achieve mutual bonding, but because the thickness of each layer of film is generally very thin , so the precision requirements for the above-mentioned processes are very high, but defects such as air bubbles or wrinkles still often inevitably appear, which also has an adverse effect on the performance of the manufactured near-space airship skin