Welding structure of missile wing support of solid rocket engine

Abstract

The invention discloses a welding structure of a missile wing support of a solid rocket engine. The welding structure comprises a body and a bottom groove positioned in the lower end surface of the body, wherein the body comprises a base and an ear column, and the ear column is connected with the base through a step surface; a first end surface of the ear column is used as a mounting surface of a missile wing, and the missile wing is mounted in an axial groove in the center of the ear column; a second end surface opposite to the first end surface is a concave cambered surface, and the diameter of the second end surface is the same as that of a combustion chamber casing; two straight flanges of the second end surface are welded to the combustion chamber casing, so that the connection between the missile wing support and the combustion chamber casing is realized; the bottom groove penetrating through the second end surface is formed in the second end surface, and the bottom groove is parallel to a welding joint between the second end surface and the combustion chamber casing. According to the welding structure adopted by the invention, compared with the prior art, the welding structure has the advantages and the benefits that residual thermal stress caused by weld is reduced, cracks are avoided, the structural strength of the missile wing support is improved, the qualified rate of handmade argon arc welding is increased, and the technology process is optimized.

Description

[0001] technical field [0002] The invention relates to the technical field of solid rocket motors, in particular to a welding structure for wing supports of solid rocket motors. [0003] Background technique [0004] The combustion chamber casing is one of the important parts in the engine structure. It is a storage tank filled with solid propellant and a place where the propellant burns. At the same time, it is also a component of the missile body. On the premise of meeting the requirements of the engine development mission statement, in the design of the engine combustion chamber shell, various load requirements during the flight test should be considered in the structural design to improve the reliability of the missile's overall structure. [0005] As the external part of the combustion chamber shell, the wing support mainly bears the external load of the missile wing, and its working condition is relatively severe. At the same time, as the main load-bearing compo...

AI Technical Summary

Problems solved by technology

[0007] The problem with the structural form without axial bottom groove is that the residual stress generated during welding cannot be effectively released, and cracks are prone to occur, which reduces the welding strength of the wing support, thereby reducing the ability of the wing support to withstand external loads, resulting in The decline of the reliability of the overall structure of the missile

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