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Explosive bolt protecting device for retarding operational fragments and explosive bolt system

A technology of explosive bolts and protection devices, which is applied in the field of rocket separation, can solve the problems of box rupture, large impact, and debris flying out, and achieve the effects of prolonging the collision time, buffering the impact force of the explosion, and avoiding debris

Inactive Publication Date: 2018-09-14
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After the explosion of the existing explosive bolt protection device, due to the excessive impact of the explosive bolt, it is easy to cause the box to break or the fragments to fly out, forming operational fragments

Method used

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  • Explosive bolt protecting device for retarding operational fragments and explosive bolt system
  • Explosive bolt protecting device for retarding operational fragments and explosive bolt system
  • Explosive bolt protecting device for retarding operational fragments and explosive bolt system

Examples

Experimental program
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Effect test

Embodiment 1

[0039] This embodiment provides an explosive bolt system, including an explosive bolt protection device and an explosive bolt 40, and the explosive bolt 40 is 3CC0-200; the explosive bolt protection device is basically the same as that of Comparative Example 1, and the difference is that it is based on the comparative example , the second side wall of the first box body 11 and the second side wall of the second box body 21 are provided with a buffer assembly 30, the second side wall is opposite to the first side wall, and the buffer assembly 30 includes a laminated first metal layer 31, an elastic buffer layer 32 and a second metal layer 33, the first metal layer 31 is made of 30CrMnSiA material and has a thickness of 3 mm, and the elastic buffer layer 32 is made of a metal rubber material wound by 1Cr18Ni9Ti stainless steel wire with a wire diameter of 0.2 mm. The final thickness is 20mm, and the density is 2750kg / m in the non-loaded state 3 , the second metal layer 33 is mad...

Embodiment 2

[0041] This embodiment provides an explosive bolt system, including an explosive bolt protection device and an explosive bolt 40, and the explosive bolt 40 is 3CC0-200; the explosive bolt protection device is basically the same as that of Comparative Example 1, and the difference is that it is based on the comparative example , the second side wall of the first box body 11 and the second side wall of the second box body 21 are provided with a buffer assembly 30, the second side wall is opposite to the first side wall, and the buffer assembly 30 includes a laminated first metal layer 31 and the elastic buffer layer 32, the first metal layer 31 is made of 45# steel material with a thickness of 4mm, and the elastic buffer layer 32 is made of rubber plate material with a thickness of 3mm, and the first metal layer 31 is bonded to the elastic buffer layer 32 by bonding Fixedly connected, the elastic buffer layer 32 is fixedly connected to the second side wall by means of adhesive bo...

Embodiment 3

[0043] This embodiment provides an explosive bolt system, including an explosive bolt protection device and an explosive bolt 40, and the explosive bolt 40 is 3CC0-200; the explosive bolt protection device is basically the same as that of Comparative Example 1, and the difference is that it is based on the comparative example , the second side wall of the first box body 11 and the second side wall of the second box body 21 are provided with a buffer assembly 30, the second side wall is opposite to the first side wall, and the buffer assembly 30 includes a laminated first metal layer 31, an elastic buffer layer 32 and a second metal layer 33, the first metal layer 31 is made of 30CrMnSiA material and has a thickness of 3 mm, and the elastic buffer layer 32 is made of a metal rubber material wound by 1Cr18Ni9Ti stainless steel wire with a wire diameter of 0.2 mm. The final thickness is 30mm, and the density is 2750kg / m in the non-loaded state 3 , the second metal layer 33 is mad...

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Abstract

The invention provides an explosive bolt protecting device for retarding operational fragments and an explosive bolt system and belongs to the technical field of rocket separation. The explosive boltprotecting device comprises a first protecting casing and a second protecting casing, wherein the first protecting casing comprises a first box body of which one end is opened and a first cover platematched with the first box body; the second protecting casing comprises a second box body of which one end is opened and a second cover plate matched with the second box body; the first side wall of the first box body is attached to the first side wall of the second box body; the first box body is used for fixing an explosive bolt, so that two ends of the explosive bolt are respectively positionedin the first protecting casing and the second protecting casing; buffer components are arranged on the second side wall of the first box body and the second side wall of the second box body; the second side wall is opposite to the first side wall; each buffer component comprises a first metal layer and an elastic buffer layer which are laminated; each elastic buffer layer is connected with the second side wall. According to the device, local impact force borne by the explosive bolt box body can be reduced and the condition that a box body structure is locally broken to form fragments is avoided.

Description

technical field [0001] The invention relates to an explosion bolt protection device and an explosion bolt system for slowing down operational fragments, belonging to the technical field of rocket separation. Background technique [0002] With the continuous increase of international space activities, space debris is also increasing at an alarming rate. According to statistics in 2009, there are 14,218 space debris cataloged in orbit, and nearly 70% of them operate at altitudes below 1000km. In the LEO area with a faster growth rate, the number of debris has increased by 36% within 5 years, and the sun-synchronous orbit has a higher density of debris, and the probability of collision with on-orbit spacecraft is the highest. Such a large number of debris has seriously polluted the space environment and poses a great threat to the safety of spacecraft in orbit. According to observation records, within half a year, as many as 6 incidents of our country's satellites passing by d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B15/36
CPCF42B15/36
Inventor 冯韶伟吴义田陆凯宋漪萍栾宇张然徐倩张涛顾名坤杨浩亮李操袁水林黄虹王君
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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