a breakable cover

Abstract

The invention discloses a frangible cover, the shape of which is a shell similar to the shape of a regular square prism, and the top surface of the outer wall is rounded in an arc-shaped chamfer shape, and the center of the top surface of the inner wall is provided with a ring-shaped stress groove. The four corners of the inner wall are provided with overall cross-shaped stress grooves, and the centers of the cross-shaped stress grooves and the ring-shaped stress grooves coincide. The friable cover of the invention can be broken according to the regular positive center of the cross-shaped stress grooves, without damaging the warhead of the missile, and the breaking process is stable and reliable.

Description

technical field

[0001] The invention belongs to the field of missile storage and launching systems, and more particularly relates to a frangible cover. Background technique

[0002] The frangible cover is an important part of the missile storage and launch system. It plays a role of sealing and protection during transportation and storage, and it needs to be opened quickly during launch so as not to affect the attitude of the missile. The fragile cover has no prescribed shape, and the fragile cover is required to have the characteristics of simple structure, light weight, high strength, strong designability and high corrosion resistance.

[0003] Stress grooves or weakening grooves are generally arranged on the fragile cover. When the missile is launched, the airflow generated by the missile engine before launch or a slight impact on the missile head can be used to break through it, so as to realize the rapid launch of the missile without preparation and improve the rapid co...

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