Underwater projectile configuration design

Abstract

This invention belongs to the field of underwater launch technology, specifically relating to an underwater projectile configuration design. It mainly consists of a projectile body and a pusher block. The projectile body adopts a hollow thin-shell structure, with a stepped structure at the front end and four (or more) evenly distributed 90° inclined slots at the rear. The pusher block is a short cylindrical structure with a through hole in the center, sealed by a sealing membrane. This device is small in size, with a diameter of 8-10 mm, making it suitable for underwater launch.

Description

Technical Field

[0001] This invention belongs to the field of underwater launch technology, specifically relating to an underwater projectile configuration design. Background Technology

[0002] In modern defense technology, the development of underwater weapons has increasingly become a focus of attention for various countries, and the resulting tests on the hydrodynamic properties of underwater medium- and high-speed motion have also attracted considerable attention from the academic community worldwide. To enable underwater projectile firing, various countries have developed their own underwater firearms, which generally use flechette projectiles (…). Figure 7 The purpose of these underwater projectiles is to overcome water resistance and adapt to underwater launch. However, these underwater projectiles have a major drawback: they are large in size and weight, making them inconvenient to use. Summary of the Invention

[0003] The purpose of this invention is to provide an underwater projectile configuration design to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an underwater projectile configuration design, mainly composed of a projectile body and a pusher block. The projectile body adopts a hollow thin-shell structure, the front end of the projectile body is provided with a stepped structure, and the rear part of the projectile body is evenly distributed with 4 (or more) 90° inclined grooves; the pusher block is a short cylindrical structure with a through hole in the middle, and the through hole is sealed by a sealing membrane.

[0005] Preferably, the hollow thin-shell structure and the stepped structure (supercavitation structure) are used.

[0006] Preferably, there are four (or more) 90° inclined grooves, evenly distributed around the rear of the stepped structure.

[0007] The beneficial effects of this invention are: This device adopts an arrow-shaped design that is different from the traditional underwater projectile design, which brings the advantages of significantly reducing the size and weight of the new underwater projectile structure, greatly increasing the amount of ammunition that personnel can carry under the same load, increasing combat endurance, and being suitable for firing traditional underwater firearms. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the present invention;

[0009] Figure 2 This is a left view of the main body of the projectile in this invention;

[0010] Figure 3 This is a front view of the projectile body in this invention;

[0011] Figure 4 This is a right view of the main body of the projectile in this invention;

[0012] Figure 5 This is a schematic diagram of the pusher block in this invention;

[0013] Figure 6 This is a schematic diagram illustrating the application of the present invention;

[0014] Figure 7 It has the arrow-shaped appearance of traditional underwater bullets. Detailed Implementation

[0015] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.

[0016] like Figure 1-5 As shown, an underwater projectile configuration design consists of a projectile body 1 and a pusher block 2. The projectile body adopts a hollow thin-shell structure and is made of a high-density metal, such as tungsten alloy. The pusher block can be made of a common metal, such as steel.

[0017] The projectile body has a stepped structure 3 at the front end, which is a supercavitation structure. The rear part has four evenly distributed 90° inclined grooves 4 (or more than four). These grooves reduce weight and shift the center of gravity forward so that the projectile can move forward stably in the water. At the same time, when the projectile speed decreases and the supercavitation disappears, and the water begins to surround the outer cylindrical surface of the projectile body, it plays a role equivalent to the stabilization of the tail fin.

[0018] The pusher is a short cylindrical structure with a through hole in the middle. Figure 5 The through hole can be sealed with a sealing membrane (to prevent water from entering, and the propellant gas will break through the membrane during firing), or it can be sealed with other materials.

[0019] Working principle:

[0020] like Figure 6 As shown, the firing barrel 6 adopts a smoothbore structure. After the projectile is fired, the pusher pushes the projectile body forward together. At the same time, a small portion of the propellant gas is ejected from the middle hole of the pusher. The ejected propellant gas plays a role in draining water (removing water from the front of the projectile body and reducing internal ballistic resistance). Then the pusher and the projectile body are ejected from the muzzle together. Under the resistance of the water, the pusher slows down and separates, while the projectile body continues to move forward.

[0021] At this point, the supercavitation structure at the front of the projectile body generates supercavitation that envelops the projectile body, reducing the frictional resistance between the projectile body and the water. The hollow structure in the middle of the projectile body allows the water to flow through quickly. At this time, the projectile body is equivalent to moving forward at high speed while wrapped in a water column (it can be understood as the projectile body being wrapped in a stick). This "water column" plays a role in stabilizing the projectile body, which is why the projectile body adopts a hollow thin-shell structure.

[0022] The projectile's killing effect on the target relies on the impact effect generated by the projectile's own structure.

[0023] It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A design for an underwater projectile configuration, characterized in that: This underwater projectile mainly consists of two parts: the projectile body and the pusher block. The projectile body adopts a hollow thin-shell structure, and the front end of the projectile body is provided with a stepped structure. Multiple 90° inclined grooves are evenly distributed at the rear of the projectile body. The pusher block is a short cylindrical structure with a through hole in the middle, which is sealed by a sealing membrane. The hollow thin shell is combined with a stepped structure and a sloping groove at the rear of the projectile body; The pusher block propels the main body of the projectile, and the pusher block also serves to drain water through the central hole.

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