Satellite composite gas cylinder end socket and manufacturing method thereof

Abstract

The invention relates to the technical field of composite material gas cylinders, in particular to a satellite composite gas cylinder end socket and a manufacturing method thereof. The satellite composite gas cylinder end socket comprises a shell and a connector, wherein the shell and the connector are welded through electron beams; the connector comprises a connector area and a shoulder reinforcing area; the shell comprises a gradual transition area, an equal-wall-thickness film area and a barrel area; and the shoulder reinforcing area is smoothly welded to the gradual transition area, and the gradual transition area is smoothly and gradually connected with the equal-wall-thickness film area. The two materials of TA1 pure titanium and TA3 titanium alloy are adopted, the requirements for high elongation at break and high plasticity of the low-cycle fatigue life of a plastic lining of the end socket shell are met, meanwhile, the requirement for high strength of rigid constraint of the end socket connector is met, the problems of damage, failure and the like of bulging, fracture, buckling, fatigue cracks, permeation and the like of the plastic lining in the fatigue cycle of a gas cylinder are solved, and the satellite composite gas cylinder end socket has the advantages of ultra-thin wall, light weight, high structural precision, good strain displacement matching performance with a composite layer, long low-cycle fatigue life and the like are achieved.

Description

technical field [0001] The present application relates to the technical field of composite material gas cylinders, in particular to a satellite composite gas cylinder head and a manufacturing method thereof. Background technique [0002] Satellite propulsion subsystems, fluid management systems, and environmental control and life protection systems all require composite material gas cylinders and other pressure vessel products. The field requires very strict control over the weight technical indicators of pressure vessels. [0003] Generally, in civil fields, aviation, ships, weapons and other fields, composite gas cylinders with high fatigue life and thicker wall thickness are mostly used. When the gas cylinder is in operation, the inner lining is in a state of elastic stress and strain, and the structural design is relatively simple. In the fields of satellites, spacecraft, missiles, etc., due to the one-time application characteristics of composite gas cylinders, it can ...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of this application is to provide a satellite composite gas cylinder head and its manufacturing method, which solves the problem of the design and manufacture of the ultra-thin wall head structure of dissimilar materials required for plastic stress-strain state work and low cycle fatigue life

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