High-strength fiber reinforcement thin film sealing butt-joint structure universal for high altitude airship

Abstract

Disclosed is a high-strength fiber reinforcement thin film sealing butt-joint structure universal for a high altitude airship. The high-strength fiber reinforcement thin film sealing butt-joint structure universal for the high altitude airship comprises left and right side butt-joint high-strength fiber reinforcement lamination composite universal skins, namely the left side skin and the right side skin, a middle reinforcement bearing layer, left side connecting sewing threads, right side connecting sewing threads, an inner side sealing film layer, a left side film layer sealing glue layer and a right side film layer sealing glue layer. The left side skin and the right side skin become the bottommost layers of the butt-joint structure. The middle reinforcement bearing layer, the left side skin and the right side skin are connected together through the left side connecting sewing threads and the right side connecting sewing threads. The inner side sealing film layer is the topmost layer of the butt-joint structure, covers connectors and then is in glue connection with the left side skin and the right side skin through the left side film layer sealing glue layer and the right side film layer sealing glue layer on the two sides, namely adhesive agents. According to the high-strength fiber reinforcement thin film sealing butt-joint structure universal for the high altitude airship, the technical difficult problems that in the butt-joint process of skin materials of the high altitude airship, the skin materials are high in welding intensity, and the helium leakage character is good are solved, the risk that the skin materials of the airship are torn and damaged at the butt joints of the skins in the high-altitude overpressure flying process of the high altitude airship is reduced, and the influence on the whole intensity of the airship in the skin high-frequency welding process is reduced.

Description

technical field [0001] The invention relates to a high-strength fiber-reinforced film sealing butt joint structure common to high-altitude airships, which can be used for skin butt joints of high-altitude airships, general welding of high-strength sealed balloons, etc., and belongs to the technical field of structural design for high-altitude airships. Background technique [0002] High-altitude airship refers to an aircraft with a flying altitude of 20 kilometers to 100 kilometers. With the advancement of contemporary science and technology, it is a new type of near-space multifunctional flying platform. It has high-altitude reconnaissance, earth observation, The application advantages in many fields such as communication relay and space exploration have become the hotspots of extensive research in countries all over the world. Airship skin material, as the main material of the high-altitude airship, directly affects the flight height and overpressure strength of the airshi...

AI Technical Summary

Problems solved by technology

The high-altitude airship skin adopts the traditional unilateral adhesive high-frequency welding method, and the load-bearing tensile strength of the airship skin material at the edge of the skin welding zone on both sides is usually reduced by about 25% to 35%, which seriously affects the flight process of the high-altitude airship The extreme overpressure strength in the airship even affects the flight altitude. In addition, the high-altitude air density is thin, and the ultraviolet radiation intensity of sunlight is high. The airship skin material also needs to withstand the high and low temperature difference between day and night, resulting in tiny cracks first appearing at the butt joint of the high-altitude airship skin. Or initial defects, after the initial damage, the overall load-bearing strength and overpressure performance of the airship skin material will decrease rapidly, and then when the high-altitude airship experiences sunshine and high temperature again to cause pressure difference changes, the airship skin will follow the airship skin butt weld rapid tear damage

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