Flexible connector assembly for flexible spraying pipe of solid rocket engine and manufacture method thereof

A technology of flexible nozzles and flexible joints, which is used in machines/engines, jet propulsion devices, etc., can solve the problems of easy cracking of elastic parts and reinforcement parts, air leakage on the bonding surface, low bonding strength, etc. The effect of low cycle and development cost, good sealing performance and high bonding strength

Active Publication Date: 2012-10-24
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

The flexible joint assembly obtained by this method has the disadvantages of low bond strength, poor sealing and air leakage between the elastic part group and the reinforcing part group during the airtight test of the flexible joint assembly.
Moreover, when the swing test is loaded, the elastic member group and the reinforcement member group still have the defects of easy cracking and bonding failure

Method used

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  • Flexible connector assembly for flexible spraying pipe of solid rocket engine and manufacture method thereof
  • Flexible connector assembly for flexible spraying pipe of solid rocket engine and manufacture method thereof
  • Flexible connector assembly for flexible spraying pipe of solid rocket engine and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 The shown flexible joint assembly for the flexible nozzle of the solid rocket motor includes a front flange body A and a rear flange body D, and the elastic member group B and reinforcement are used between the front flange body A and the rear flange body D The component group C is connected, and the elastic component group B is composed of a matching 11-layer concentric spherical annular natural rubber compound rubber elastic sheet B 1 ~B 11 constituted, the thickness of each sheet is 1.3mm, such as figure 2 Shown; reinforcement group C is made of matching 10-layer concentric spherical annular high-strength steel rigid sheet C 1 ~C 10 Composition; the thickness of each sheet in reinforcement group C is 1.8mm, such as image 3 As shown, the 11-layer concentric spherical elastic sheet B 1 ~B 11 With 10 layers of concentric sphere ring-shaped rigid sheet C 1 ~C 10 It has an alternating spaced bonding structure, and is thermally vulcanized and bonded toge...

Embodiment 2

[0052] A flexible joint assembly for a flexible nozzle of a solid rocket motor, including a front flange body A and a rear flange body D, and an elastic member group B and a reinforcing member are passed between the front flange body A and the rear flange body D The group C is connected, and the elastic part group B is composed of 11 layers of concentric spherical ring-shaped natural rubber compound elastic sheet B that matches 1 ~B 11 The reinforcement group C is composed of 10 layers of concentric spherical annular high-strength steel rigid sheets C 1 ~C 10 Composition; the thickness of each thin sheet in the elastic member group B is 1.8mm; the thickness of each thin sheet in the reinforcing member group C is 2.0mm; the 11-layer concentric spherical annular elastic thin sheet B 1 ~B 11 With 10 layers of concentric sphere ring-shaped rigid sheet C 1 ~C 10 It has an alternating spaced bonding structure and is thermally vulcanized and bonded with the rear flange body D to...

Embodiment 3

[0070] A flexible joint assembly for a flexible nozzle of a solid rocket motor, including a front flange body A and a rear flange body D, and an elastic member group B and a reinforcing member are passed between the front flange body A and the rear flange body D The group C is connected, and the elastic part group B is composed of 9 layers of concentric spherical ring-shaped silicone rubber compound elastic sheets B that match 1 ~B 9 Composition, the reinforcement group C is made of matching 8-layer concentric spherical annular titanium alloy steel rigid sheet C 1 ~C 8 Composition; the thickness of each sheet in the elastic member group B is 2.0mm, the thickness of each sheet in the reinforcing member group C is 2.5mm, and the 9-layer concentric spherical annular elastic sheet B 1 ~B 9 With 8 layers of concentric sphere annular rigid sheet C 1 ~C 8 It has an alternating spaced bonding structure, and is thermally vulcanized and bonded with the rear flange body D to form a ...

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Abstract

The invention discloses a flexible connector assembly for a flexible spraying pipe of a solid rocket engine and a manufacture method thereof. The flexible connector assembly comprises a front flange body and a back flange body which are connected through an elastic piece group and a reinforcing piece group. The elastic piece group is formed by n+1 layers of homocentric sphere annular elastic slices which are matched. The reinforcing piece group is formed by n layers of homocentric sphere annular rigid slices, and n is a natural number. The n+1 layers of homocentric sphere annular elastic slices and the n layers of homocentric sphere annular rigid slices are of an interactive interval bonding structure and are subjected to heat vulcanization bonding with the back flange body to form a heat bonding composite body. The heat bonding composite body and the front flange body are bonded through a cold adhesive to form a sphere homocentric connection body. The flexible connector assembly is high in bonding force, good in sealing performance, simple in manufacture method and operation, good in usability and low in cost.

Description

technical field [0001] The invention relates to parts of a flexible nozzle of a solid rocket motor, in particular to a flexible joint assembly for a flexible nozzle of a solid rocket motor and a preparation method thereof. Background technique [0002] A flexible nozzle is needed in a solid rocket motor. The flexible nozzle is a swinging nozzle that uses a flexible joint to implement the nozzle swing and achieve the purpose of thrust direction control. It is usually composed of a movable body, a fixed body, and a flexible joint assembly. The flexible joint assembly is the execution part of the nozzle swing. At present, the common preparation method of the flexible joint assembly adopts the cold bonding method, that is, the elastic part group is cold bonded with the front flange body, the reinforcement part group and the rear flange body at one time. The flexible joint assembly obtained by this method has the disadvantages of low bonding strength, poor sealing and air leakag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/80B29C65/48
Inventor 万德芬余天雄晏述亮杨江波朱兴涛
Owner 湖北三江航天江北机械工程有限公司
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