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Manufacturing method of sabot system of ground simulation test for aircraft strength test

A technology of ground simulation and aircraft strength, applied in the field of aircraft testing, can solve problems such as difficulty in controlling the friction between the bullet and the magazine, the influence of the separation of the bullet and the magazine, and the installation of the bullet to the bottom of the magazine, etc., to achieve light weight and moderate tightness , low cost effect

Active Publication Date: 2022-07-15
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many disadvantages in the currently used bullet holder: the friction between the bullet and the bullet holder is difficult to control, and when the gap is large, the flight posture of the bullet after ejecting from the chamber is unstable; if the gap is too small, there will be a pressure difference between the inside and outside of the bullet during installation, making it difficult to install the bullet To the bottom of the bullet holder, there is a risk of explosion; the negative pressure inside the bullet holder cavity will affect the separation of the bullet and the bullet holder, etc.

Method used

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  • Manufacturing method of sabot system of ground simulation test for aircraft strength test
  • Manufacturing method of sabot system of ground simulation test for aircraft strength test
  • Manufacturing method of sabot system of ground simulation test for aircraft strength test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like Figure 4 As shown in the figure, a method for making a bomb carrier system for ground simulation test for aircraft strength test includes the following steps:

[0034] S1. Design the elastic mold:

[0035] According to the inner diameter of the air gun and the weight of the bird bomb, the ejector support structure is designed, and the ejection mold design drawing is drawn according to the ejection support structure. Combined with the ejection mold design drawing, 3D software is used to model each part of the ejection mold in 3D, and the parts of the ejector mold are obtained. 3D drawing and general assembly drawing of the elastic mold;

[0036] S2. Manufacture of elastic mold:

[0037] Carry out CAM tool path program design on the three-dimensional diagram of each part obtained in step S1 and import it into the CNC manufacturing process to manufacture each part, and then assemble according to the general assembly drawing of the spring support mold to obtain the ...

Embodiment 2

[0046] The difference from Example 1 is that:

[0047] In step S3, the stirring temperature is 50° C., the stirring speed is 120 r / min, and the stirring time is 5 min;

[0048] In step S4, the elastic support mold is put into the heat preservation device, and the heat preservation temperature is 30 ° C. After the upper mold 1 and the lower mold 2 are kept in the heat preservation device for 48 minutes, the upper mold 1 and the lower mold 2 are separated. The temperature in the insulation device is 30℃ for 30h;

[0049]The release agent is composed of the following components by weight: 1.9 parts of sorbitan monooleate SPAN-80, 2.5 parts of n-butanol, 3.0 parts of polystyrene PS, 2.0 parts of ethyl acetate, 0.8 parts of additives, 6.0 parts of ionized water;

[0050] The additive is composed of the following components by weight: 0.2 part of oxidizing agent, 0.3 part of reducing agent, 0.3 part of chain transfer agent;

[0051] The elastic support mold material is composed o...

Embodiment 3

[0053] The difference from Example 1 is that:

[0054] In step S3, the stirring temperature is 45° C., the stirring speed is 100 r / min, and the stirring time is 5 min;

[0055] In step S4, the elastic support mold is put into the heat preservation device, and the heat preservation temperature is 24 ° C. After the upper mold 1 and the lower mold 2 are kept in the heat preservation device for 50 minutes, the upper mold 1 and the lower mold 2 are separated. The placing temperature in the heat preservation device is 20℃ for 26h;

[0056] The release agent is composed of the following components by weight: 1.7 parts of sorbitan monooleate SPAN-80, 2.3 parts of n-butanol, 2.5 parts of polystyrene PS, 1.8 parts of ethyl acetate, 0.5 parts of additives, 5.8 parts of ionized water;

[0057] The additive is composed of the following components by weight: 0.15 part of oxidizing agent, 0.15 part of reducing agent, 0.2 part of chain transfer agent;

[0058] The elastic support mold mate...

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Abstract

The invention discloses a method for manufacturing a sabot system of a ground simulation test for aircraft strength testing, and belongs to the technical field of aircraft testing, and the method comprises the following steps: S1, designing a sabot mold: designing a sabot structure according to the inner diameter of a gas gun and the weight of a bird projectile, and drawing a sabot mold design drawing according to the sabot structure; s2, a sabot mold is manufactured, wherein CAM tool path program design is conducted on the three-dimensional diagrams, obtained in the step S1, of all the parts, and the three-dimensional diagrams are guided into a CNC manufacturing process to manufacture all the parts; s3, preparation of a sabot material: mixing polymethylene phenyl isocyanate (MDI) and premixed polyether polyol (MSDS); s4, a sabot is manufactured, specifically, the mixture is guided into a sabot mold to manufacture the sabot; the produced sabot is low in cost, smooth in surface, free of damage to a gun barrel and convenient to install, compared with an existing sabot, bullets can be loaded into the sabot more easily, the tightness degree is moderate, the bullets and the sabot are separated more easily, sabot fragments cannot interfere with flying of the bullets after separation, and the sabot has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of aircraft testing, in particular to a manufacturing method of a bomb support system for ground simulation test for aircraft strength testing. Background technique [0002] Structural vulnerability assessment and damage effect analysis are key technical links in the design and testing of advanced fighter aircraft. In order to study the damage mechanism and damage effect of typical structures under the action of typical damage elements, ground simulation tests must be carried out. The discrete source high-speed impact air cannon system can provide a basis for the structural design and material selection of aircraft used in my country's military aircraft, and provide advanced experimental verification methods for improving the structural survivability of aircraft in complex battlefield environments. The design and production technology of the high-speed gas cannon shell holder is the key technology in the tes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/38B29C33/00B29C33/10
CPCB29C33/3835B29C33/3842B29C33/00B29C33/10B29L2031/777
Inventor 符伟超王彬文郭军刘小川舒挽
Owner CHINA AIRPLANT STRENGTH RES INST
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