Underwater Special Seed Bomb
The conical design, which combines a hollow bullet head with a cartridge case center post, solves the problem of insufficient underwater bullet range, enabling efficient firing in water and air, reducing water resistance, and improving firing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-03
- Publication Date
- 2026-03-13
AI Technical Summary
Existing underwater bullets have limited range in water and cannot be fired in the air, requiring specialized firearms for firing, and existing designs suffer from significant water resistance.
The design incorporates a conical structure that combines a hollow projectile with a cylindrical core in the cartridge case. The projectile is hollow and has an outward bevel at the top, which generates air bubbles to reduce water resistance. Combined with the cylindrical design at the bottom of the cartridge case, this design enables efficient firing in water.
This technology increases the range of underwater bullets in water and enables them to be fired in the air, reducing water resistance and improving firing efficiency.
Smart Images

Figure CN112066818B_ABST
Abstract
Description
[0001] Technical Field of Underwater Special Ammunition: This invention relates to a special ammunition for underwater firearms.
[0002] Background Technology: Currently, my country does not have its own intellectual property rights for underwater bullets. There are two existing types of underwater bullets: one is the "rod-shaped arrow" bullet, which has a relatively long, arrow-like projectile. It requires a specialized firearm for firing and cannot be fired in air. The second type is the "supercavitating" bullet, which has a concave groove in its projectile. During its flight, the bullet generates air bubbles, reducing drag and allowing it to achieve a longer range. Reports indicate that underwater bullets can currently achieve a firing range of up to 25 meters.
[0003] Summary of the invention: This invention starts by changing the structure of the bullet to reduce water resistance, thereby increasing the effective range of the bullet in water.
[0004] The technical problem to be solved: The hollow projectile designed in this invention can effectively reduce the drag of the bullet facing the water. The outward bevel design of the projectile head allows the projectile to generate a "bubble" phenomenon, thereby reducing drag. With the combined effect of these two design features, the underwater bullet can achieve a longer effective range. The ammunition of this invention can be used in air.
[0005] Technical solution:
[0006] The underwater special-purpose bullet has a cylinder in the middle of the bottom of the cartridge case, and the part extending out of the cartridge case is conical and penetrates the warhead.
[0007] The hollow, conical bullet fits perfectly with the cartridge case's central post to form a complete bullet. When the bullet is propelled out of the projectile by the thrust generated by the explosive combustion of the ammunition, the hollow bullet experiences low head-on pressure. Furthermore, the outward-angled design at the top of the bullet creates air bubbles, allowing the bullet to move within these bubbles. The combined effect of these two factors reduces drag, enabling the bullet to travel efficiently through water and achieve long-range firing.
[0008] The projectile and cartridge case of this invention are formed by pressing and adhesive bonding. This invention maintains the conventional firing mechanism.
[0009] Attached diagram description: (Indicates the names of each part)
[0010] Figure 1 This is a diagram of the warhead for an underwater special munition. The warhead is hollow in the middle.
[0011] Figure 2 This is a structural diagram of the cartridge case for an underwater special-purpose projectile. The cartridge case contains a central pillar.
[0012] Figure 3This is a structural diagram of an underwater special-purpose bullet. The warhead and cartridge case core fit together perfectly, forming a complete bullet with the ammunition and primer. The warhead and cartridge case are formed by compression and adhesive bonding, without altering the conventional firing design.
Claims
1. An underwater special bullet, characterized by: The application relates to a bullet, which comprises a bullet head and a bullet shell, wherein the bullet head is hollow and conical, and the top of the bullet head is provided with an outer bevel; the bottom of the bullet shell is provided with a bullet shell middle column, the bullet shell middle column is a cylinder and is conical at the part extending out of the bullet shell and penetrates the bullet head; the bullet head and the bullet shell middle column are completely matched, and the bullet, the primer and the bullet shell constitute a complete bullet; the bullet head and the bullet shell are formed by pressing and adhesive, and the conventional firing design is not changed.
Citation Information
Patent Citations
High speed hollow cylinder bullet
DE19711344A1
The warhead with the air hole
KR1020090087160A