Supporting device and supporting method for solid rocket motor end combustion charge

A technology of end-face combustion and solid rockets, which is applied in the direction of rocket engine devices, machines/engines, jet propulsion devices, etc. It can solve problems such as unsafety, uneven ventilation stress on the surface of the grain, and swaying of the grain, and improve the stress situation , Unique high temperature resistance, avoid cracking effect

Active Publication Date: 2021-05-11
西安航科等离子体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above problems in the prior art that the grain of the solid rocket motor is easy to sway in the combustion chamber, causing unsafe conditions, and the uneven ventilation on the surface of the grain produces stress, the present invention proposes a supporting device and a support for the solid rocket motor end combustion grain. method, can solve these two problems well, and its specific technical scheme and method are as follows:

Method used

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  • Supporting device and supporting method for solid rocket motor end combustion charge
  • Supporting device and supporting method for solid rocket motor end combustion charge

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Experimental program
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Effect test

Embodiment 1

[0035] In this embodiment, the support device used for the solid rocket motor end combustion charge, the bottom support plate 1 and the side support plate 2 are EPDM plates, the inner surface of the side support plate 2 and the outer surface of the charge 3 There is a gap of 0.3mm between them, the cross section of the bottom support plate 1 is fan-shaped, and the thickness of the bottom support plate 1 is 1.3mm, and the supporting surface area of ​​the bottom support plate 1 is 1200mm 2 , the bonding strength of the bottom support plate 1 is 2MPa; the cross section of the side support plate 2 is rectangular, and the length, width and thickness of the side support plate 2 are 100mm, 60mm and 1.5mm respectively; the combustion chamber is cylindrical, and the combustion chamber The diameter of the indoor surface is Ф142.2mm, and the diameter of the outer surface of the grain column 3 is Ф139mm.

[0036] Using the supporting device of this embodiment for the solid rocket motor en...

Embodiment 2

[0041] The difference from Embodiment 1 is that in this embodiment, a gap of 0.2mm is left between the inner surface of the side support plate 2 and the outer surface of the charge 3 in the supporting device for the solid rocket motor end combustion charge. The length, width and thickness of the support plate 2 are 100mm, 60mm and 1.2mm respectively.

[0042] (1) Determine that the proportion of the gap between the combustion inner surface 4 and the outer surface of the grain 3 is 62%, that is Into the formula It is calculated that the number of side support plates 2 installed is 4; the number of bottom support plates 1 installed is 4; where n is the number of side support plates, b is the width of the side support plates, δ is the thickness of the side support plates, and D is The diameter of the inner surface of the combustion chamber, d is the diameter of the outer surface of the grain, is the proportion of the space between the inner surface of the combustion chamber ...

Embodiment 3

[0046] The difference from Embodiment 1 is that this embodiment is used as a supporting device for solid rocket motor end-face combustion charges, and there is a gap of 0.1 mm between the inner surface of the side support plate 2 and the outer wall of the charge 3 . All the other are identical with embodiment 1.

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Abstract

The invention provides a supporting device and a supporting method for a solid rocket motor end combustion charge, which belongs to the technical field of solid rocket motor manufacturing, and specifically includes a combustion chamber and a charge connected to the inside of the combustion chamber, the outer surface of the charge and the combustion chamber. A support is arranged between the indoor surfaces; the support includes a bottom support plate and a side support plate, the bottom support plate is arranged on the head of the grain column, and the side support plate is arranged on the outer side of the grain column, the bottom support plate and the side support plate are right and left connected. Utilizing the support device of the present invention for solid rocket motor end-face burning grains can ensure the integrity of the grains and the safety of the solid rocket motor during operation, and at the same time have the effects of buffering and stress releasing on the grain surface, which can be well improved The stress of the grain column.

Description

technical field [0001] The invention belongs to the technical field of solid rocket motor manufacturing, and in particular relates to a supporting device and a supporting method for solid rocket motor end-face combustion charges. Background technique [0002] The solid rocket motor is the power device of aerospace vehicles such as rockets and missiles. Its principle is to generate high-temperature gas through the combustion of solid propellants. After the high-temperature gas is ejected through the nozzle, it generates a reaction force to propel the rocket or missile. When the engine is working, its combustion chamber is always in a state of high temperature and high pressure. [0003] When the combustion chamber of the engine is always in a state of high temperature and high pressure, the surface of the grain will also be in a high temperature and high pressure gas environment. Therefore, the surface of the grain exposed to the gas environment will be subject to a large com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/36
CPCF02K9/36
Inventor 马俊王浩静姚挺陈铭德樊黎君周倩倩黄微波
Owner 西安航科等离子体科技有限公司
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