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Bomb body structure capable of reducing shock wave drag of bomb body and method thereof

A technology of shock wave resistance and projectile body, which is applied in the direction of self-propelled projectiles, projectiles, offensive equipment, etc.

Inactive Publication Date: 2008-01-30
任小卫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to overcome the above-mentioned technical problems that cannot be solved in the prior art, and to provide a projectile structure and method that can effectively reduce the shock resistance of the projectile and the bottom resistance of the projectile

Method used

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  • Bomb body structure capable of reducing shock wave drag of bomb body and method thereof
  • Bomb body structure capable of reducing shock wave drag of bomb body and method thereof
  • Bomb body structure capable of reducing shock wave drag of bomb body and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Embodiment 1. Sleeve-shaped warhead and ammunition

[0109] Figure 2a shows a schematic structural view of a sleeve-shaped warhead, which is composed of a core body 1, a sleeve-shaped body 2 and several ribs 3. The shape of the wall surface of the fin 3 is helical along the central axis 16 of the projectile, and there is an inclination angle with the central axis 16 of the casing-shaped projectile that is the same as the direction of rotation of the rifling. Most of the currently used barrel weapons are rifled barrels. Since the rifling exerts a large force on the projectile to rotate it when the ammunition is fired, the structure of the projectile must be able to withstand such a large force. In order to withstand the powerful force of the rifling, the sleeve casing 2 and the ribs 3 must have sufficient strength. Figure 2b is a schematic diagram of the overall structure of an ammunition equipped with a sleeve-shaped warhead, and Figure 2e is a schematic diagram of the...

Embodiment 2

[0111] Embodiment 2. Sleeve-shaped ammunition integrated with shell and bullet

[0112] FIG. 3 a is a schematic structural view of a sleeve-shaped ammunition with an integrated casing, and FIG. 3 g is a schematic structural view of the front edge of the sleeve casing 2 shrinking inward. The overall structure of the sleeve-shaped ammunition integrated with shell and bullet is made up of sleeve-shaped warhead, bullet holder 4, propellant 5 and base 6 that primer is installed. Its sleeve-shaped warhead is formed as a whole by the core body 1, the sleeve housing 2 and several ribs 3 . The bullet holder 4 is located behind the bullet core body 1, and forms a sealed connection with the bullet core body 1 and the inner wall of the casing casing 2 but does not form a whole; 2 slides back inside and out from the rear of the sleeve housing 2. The structure of the base 6 is equivalent to that part of the bottom left after the cylinder portion in front of the common shell is cut off. T...

Embodiment 3

[0117]Example 3. Casing-shaped projectile

[0118] Figure 4a shows the structure of a sleeve-shaped projectile. The core body 1 is composed of a fuze 7 and a warhead 8. The whole bomb consists of a core body 1, a casing shell 2, several ribs 3 and a bullet holder 4. constitute. Figure 4b shows a range-extended sleeve-shaped projectile with a solid motor 9 added. The whole bullet is composed of a core body 1, a sleeve shell 2, several ribs 3, and a bullet holder 4. The core body 1 is composed of a fuze 7, warhead 8, solid motor 9 constitute. The wall surface of the rib 3 can be straight parallel to the central axis 16 of the projectile body, or can be helical with an inclination angle same as the direction of rotation of the rifling between the central axis 16 of the projectile.

[0119] For the positive significance that the sleeve-shaped projectile can produce in the application of large-caliber artillery ammunition, here is a comparison with the domestic PLZ45-155 mm howit...

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Abstract

The invention provides a projectile shockwave drag reducing projectile structure and a method. The projectile structure is a sleeve-type projectile structure constituted by a projectile core (1) and a sleeve shell (2), and the projectile core (1) and the sleeve shell (2) can be directly connected or be connected into a whole by a plurality of batten-shaped fins (3). The sleeve shell (2) can restrict effectively the shock wave generated at the front end of the projectile core (1) from diffusing to surrounding air in a certain supersonic speed range, so that no shockwave or only weak shockwave exists outside the projectile body. Supersonic straight head-on airflow in flow passage of the same cross-sectional area with that of the projectile is guided into the low-pressure room in the tail part of the projectile after flowing partly or completely through the airflow channel (15) of the sleeve-type projectile, thereby reducing the vacuum degree in the bottom part of the sleeve-type projectile and pressure difference between the front end and the back end of the projectile, thus, the wave drag and bottom drag are reduced to the very low level.

Description

technical field [0001] The invention relates to a projectile structure, in particular to the projectile structure of weapons and ammunition flying at supersonic speed such as bullets, artillery shells, rockets and missiles. Background technique [0002] 1) As we all know, when bullets, artillery shells, rockets, missiles, airplanes and other objects flying in the air at supersonic speeds fly, they will be subjected to air resistance and generate shock waves. Air resistance is divided into shock wave resistance, projectile bottom resistance and frictional resistance. Shock wave resistance is the resistance generated by the shock wave at the head of the projectile, which is called wave resistance; the bottom resistance is formed by the pressure drop caused by the vacuum behind the bottom of the projectile when the projectile moves at high speed, called bottom. resistance; when the projectile flies at supersonic speed, wave resistance and bottom resistance account for the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B10/34F42B15/00
Inventor 任小卫
Owner 任小卫
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