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Small diameter large opening solid rocket motor casing forming method

An engine casing and solid rocket technology, which is applied to household appliances, other household appliances, household components, etc., can solve the problem of increasing the charge space due to the redundant mass of the engine, reducing the pressure bearing capacity of the casing, and prone to defects in the bonding area, etc. problem, to achieve the effect of good pressure bearing capacity, high reliability and low cost

Active Publication Date: 2022-07-08
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

[0009] The process is simple and easy, and the production cost is low, which effectively reduces the redundant mass of the engine and increases the charge space. However, this molding scheme is difficult to operate, and defects are prone to occur at the bonding point, thereby reducing the shell’s weight. Pressure endurance

Method used

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  • Small diameter large opening solid rocket motor casing forming method
  • Small diameter large opening solid rocket motor casing forming method
  • Small diameter large opening solid rocket motor casing forming method

Examples

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Effect test

Embodiment 1

[0044] like figure 1 As shown, the present invention discloses a solid rocket motor casing with a small diameter and a large opening, wherein the casing 5 includes a hollow cavity formed by an inner thermal insulation layer 3 and an outer winding layer 4. Both ends are respectively provided with a front head 1 and a rear head 2, wherein the front head 1 includes a front joint part 1.1, the rear head 2 includes a rear joint part 2.1, and the front joint part 1.1, the rear The joint part 2.1 includes a positioning connection section 1.11, a slope transition section 1.12 and a plane extension section 1.13, and the front joint part 1.1 and the rear joint part 2.1 are both located between the thermal insulation layer 3 and the winding layer 4, while also ensuring that the The outer surface of the heat insulating layer 3 and the outer surface of the planar extension 1.13 are on the same level, and the outer surface of the winding layer 4 is on the same level as the outer surface of ...

Embodiment 2

[0046] like figure 1 , figure 2 and image 3 As shown, this embodiment discloses the method for forming a small-diameter large-opening solid rocket motor casing shown in the above-mentioned Embodiment 1, which includes the following steps:

[0047]1) Positioning and installation of the winding tool and the front head 1 and the rear head 2: the winding tool includes a mandrel 7 and a winding inner cylinder 6 sleeved on the periphery of the mandrel 7. In this embodiment, the winding inner The cylinder 6 is a steel winding inner cylinder, and the front head tooling 8 and the rear sealing head tooling 9 for positioning the front sealing head 1 and the rear sealing head 2 respectively; and also include the front sealing head 1 for fixing the front sealing head and the rear sealing head. The front head compression nut 12, the rear head compression nut 13 of the head 2, and the front head tooling compression nut 10 and the rear head tooling for fixing the front head tooling 8 and ...

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Abstract

The invention discloses a method for forming a solid rocket motor casing with a small diameter and a large opening, and belongs to the technical field of solid rocket motors. It includes the following steps: 1) Positioning and installation of the winding tool and the front and rear heads; 2) The putty is cured; 3) The thermal insulation layer is attached and pre-pressed; 4) The adhesive is applied; 5) The slope area is leveled; 6 ) Longitudinal winding and circumferential winding again; 7) Pre-pressing again and curing in the furnace; 8) Turning and cutting; 9) Removing the winding tool and grinding the surface of the shell. The molding method not only has high technological feasibility and low cost, but also has high reliability and good pressure bearing capacity of the prepared composite material shell.

Description

technical field [0001] The invention relates to a carbon fiber composite material solid rocket motor casing, belongs to the technical field of solid rocket motors, and in particular relates to a method for forming a solid rocket motor casing with a small diameter and a large opening. Background technique [0002] Carbon fiber composite engine casings have excellent performance, but the cost is high. In the traditional carbon fiber composite shell molding process, the shell barrel section and the joint are cured and formed at the same time. The process route is complex and the quality batch is unstable. Additional reinforcement of the head part is required to cope with the stiffness of the metal joint is much greater than that of the metal joint. The problem of composite shell stiffness. Especially for the shell with large opening head, the hoop strain at the edge of the pole hole is extremely large. When the shell is under internal pressure, low-pressure blasting is very li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/00B29C69/02B29C63/10B29C35/02B29L31/30
CPCB29C69/002B29C69/02B29C63/10B29C35/02B29L2031/3097B29L2031/749
Inventor 李一洋何华锋谭云水魏虹卓艾宝徐雷
Owner 湖北三江航天江北机械工程有限公司
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