Light composite sabot and manufacturing method thereof

A technology of composite materials and manufacturing methods, applied in warheads, ammunition, weapon accessories, etc., can solve the problems of large negative mass and achieve low cost, strong practicability, and good consistency in shape and size

Active Publication Date: 2018-12-28
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional flip holder is made of aluminum alloy material, which has a large negative mass

Method used

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  • Light composite sabot and manufacturing method thereof
  • Light composite sabot and manufacturing method thereof
  • Light composite sabot and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment requires the preparation of a lightweight composite material bullet holder with a projectile body diameter of 66mm, and its working conditions and requirements are shown in Table 1 below:

[0033] Table 1 Working conditions and requirements of Example 1

[0034]

[0035]

[0036] The manufacturing method of this lightweight composite bullet holder comprises the following steps:

[0037] Step 1: According to the external structure size and working condition requirements of the bullet support product, the finite element model of the composite material bullet support is established through the Abaqus analysis software, and the strength of the bullet support at launch is calculated through the dynamic display algorithm, and the reinforcing rib is determined according to the calculation result The quantity is 5, the thickness is 5mm, and the skin thickness is 2mm, and then the number of PMI (polymethacrylimide) foam boards is 6, and the thickness is 12m...

Embodiment 2

[0045] This embodiment requires the preparation of a lightweight composite material bullet holder with a projectile body diameter of 73mm, and its working conditions and requirements are shown in Table 1 below:

[0046] Table 1 Working conditions and requirements of Example 1

[0047] serial number

project

unit

index

1

Projectile caliber

mm

73

2

Projectile weight

kg

8.46

3

Bullet weight (single piece)

kg

≤1.5

4

Work with maximum acceleration

/

25,000g

[0048] The manufacturing method of this lightweight composite bullet holder comprises the following steps:

[0049] Step 1: According to the external structure size and working condition requirements of the bullet holder, the finite element model of the composite material bullet holder is established through the Abaqus analysis software, the strength of the bullet holder during launch is calculated through the dynamic display algorithm, ...

Embodiment 3

[0057] Such as Figure 1~2 As shown, this embodiment discloses the specific structure of the lightweight composite bullet holder prepared in Example 1, including a bullet holder sandwich structure made by alternately bonding and processing 5 reinforcing ribs 1 and 6 foam boards 2 , and the skin 3 covered on the surface of the bullet holder sandwich structure, the specific materials, dimensions and processing technology are shown in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a light composite sabot and a manufacturing method thereof. The light composite sabot comprises a sabot sandwich structure and a skin laying on the surface of the sabot sandwich structure, wherein the sabot sandwich structure is manufactured by alternately bonding and processing n reinforcing ribs and (n+1) foam boards. The manufacturing method comprises the following stepsthat (1) the thickness of the skin, and the thickness and number of the reinforcing ribs and the foam boars are set; (2) the reinforcing ribs are manufactured through fiber materials A in a layer laying mode; (3) the foam boards and the reinforcing ribs are bonded together alternately through adhesives and heat and solidified into a sandwich structure blank board; (4) a sabot sandwich structure with the needed structural size are machined; (5) the skin is manufactured through fiber materials B in a layer laying mode, and the fiber materials B coated with shaping agents are laid on the surfaceof the sabot sandwich structure coated with the adhesives layer by layer, and a preformed body of the sabot is obtained; and (6) product forming is conducted through a resin transfer molding technology, and then the sabot product is obtained. According to the light composite sabot and the manufacturing method thereof, the weight reduction effect is remarkable, under the same using condition, thespeed of ammunitions is higher, and the power of the ammunitions is larger.

Description

technical field [0001] The invention relates to a bullet holder, in particular to a lightweight composite material bullet holder and a manufacturing method thereof. Background technique [0002] When the shell is fired, the role of the bullet holder is mainly to withstand the pressure of the gunpowder gas, giving the ammunition a certain initial velocity to fly. The bullet rest is a negative mass on the ammunition. In order to obtain higher muzzle velocity flight and improve the power of the shell, the mass of the bullet rest is required to be as small as possible. [0003] The traditional flip holder is made of aluminum alloy, which has a large negative mass. The rapid development of new materials and new technologies has provided technical possibilities for the development and performance improvement of ammunition. In order to reduce the mass of the bullet holder, a composite material bullet holder has been gradually developed. Composite materials have the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48B29C70/54F42B30/08
CPCB29C70/48B29C70/54F42B30/08
Inventor 马娟刘虎佘平江邓德凤舒威
Owner 湖北三江航天江北机械工程有限公司
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