Super-cavity bullet with large cross-medium kinetic energy

Abstract

The invention discloses a super-cavity bullet with large cross-medium kinetic energy, and relates to the technical field of bullets, the super-cavity bullet comprises a bullet support and a bullet core, the bullet support is provided with a first column body, a first inclined body, a second column body, a third column body and a second inclined body from one side to the other side, the bullet core comprises a conical surface, a first conical surface, a second conical surface, an embedded body and an annular groove formed in the first conical surface, the first conical surface, the second conical surface and the third conical surface are provided with curved surface transition, and the embedded body of the bullet core is connected with the groove of the bullet support in a matched mode. Theoretical analysis and numerical simulation are combined, the projectile type is designed on the basis of the change rule of the cavitation form, the ballistic characteristic and the hydrodynamic characteristic in the cross-medium shooting process of the projectile, through the conical head structure arranged on the projectile core, the storage speed of the projectile in the cross-medium shooting process can be higher, great kinetic energy is kept, and the projectile type is more stable. The range and precision of cross-medium shooting are guaranteed, and simulation analysis and testing are conducted on the cross-medium shooting of the projectile through FLUENT fluid simulation software and a targeting experiment.

Description

technical field [0001] The invention relates to the technical field of bullets, in particular to a supercavitating bullet with large kinetic energy across a medium. Background technique [0002] Due to the special underwater combat environment, and ordinary bullets are designed for use in the air, when shooting in water, since the density of water is about 800 times that of air, its viscosity and density are much higher than that of air, resulting in bullets. When shooting in water, the range is greatly shortened, and the stability of the bullet under water is poor, which greatly reduces the hit rate and power of the bullet when it is shot from the air to the water. [0003] The existing underwater bullet adopts a long-rod arrow structure, which can ensure the stable flight of the warhead underwater, but has poor adaptability to water and land. The magnitude is reduced. [0004] Therefore, ordinary bullets, which are mainly used in individual combat, cannot be shot underwa...

AI Technical Summary

Problems solved by technology

However, the projectile with added fins can only provide a certain degree of underwater stability, and this invention has a simple structure, and the effect of improving the stability of the projectile in water is not strong

[0006] In summary, although the existing underwater bullet technology can achieve cross-medium shooting to a certain extent, most projectiles have low accuracy and poor range when cross-medium shooting, and the stability changes sharply during the cross-medium process. Deviating from the original track direction, the speed drops greatly, resulting in a shorter range, lower hit rate and worse flight stability of the projectile after it crosses the medium, far from being able to pose a threat to the target

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