Coated grain structure with support suitable for gas generator

Abstract

The invention discloses a coated grain structure with a support suitable for a gas generator. The coated grain structure comprises a grain, the support and a coating layer, wherein the grain is of internal and external combustion tube type charging; the support is generally made of non-metal materials such as metal or glass fiber reinforced plastics and is in the shape of a thin-wall cylindrical shell with openings in the two ends, a certain number of through holes are formed in the cylindrical surface of the support in the radial direction and used for connecting the grain on the two sides ofthe support into a whole and improving the mechanical property of the grain; and the coating layer is used for coating the two ends of the grain to achieve a combustion limiting effect, so that the constant-surface combustion characteristic of charging is achieved. According to the coated grain structure, compared with an existing coated grain structure, the overall stress condition of the coatedgrain is improved, and when the gas generator experiences mechanical loads such as impact, vibration or road transportation, the environment tolerance of the coated grain can be enhanced; and meanwhile, in the working process of the gas generator, the capacity of bearing the internal and external pressure difference of the coated grain can be improved, and the structural integrity of the coated grain is kept.

Description

technical field [0001] The invention relates to a support-coated grain column structure suitable for a gas generator, belonging to the technical field of gas generators. Background technique [0002] When the gas generator used for the ejection power device works, a large amount of high-temperature and high-pressure gas is generated in a short period of time, which is used as the initial energy source of the ejection power device. With the continuous improvement of the comprehensive performance of existing tactical weapons, the use of vertical cold-launched tactical missiles puts forward high-impulse, short-stroke, and miniaturized design requirements for the ejection system. more stringent requirements. [0003] At present, the coated grains used in gas generators are usually subjected to the external mechanical environmental conditions and the high temperature and high pressure environment generated when the gas generator is working by the grain body. The technical risk ...

AI Technical Summary

Problems solved by technology

[0003] At present, the coated grains used in gas generators are usually subjected to the external mechanical environmental conditions and the high temperature and high pressure environment generated when the gas generator is working by the grain body. The technical risk of damage to the structural integrity of the charge caused by the internal and external pressure difference generated during combustion, and further affects the working characteristics of the gas generator

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