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Large-scale solid rocket propellant grain structure integrity test method and device

A structural integrity, solid rocket technology used in rocket motor units, jet propulsion units, machines/engines, etc.

Pending Publication Date: 2019-11-22
中国人民解放军96901部队24分队
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] Due to the limitation of the diameter of the solenoid valve (generally less than 50mm) and opening speed (generally not less than 50ms), this method can only be applied to the structural integrity assessment of small engine grains (free volume is generally less than 5L).

Method used

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  • Large-scale solid rocket propellant grain structure integrity test method and device
  • Large-scale solid rocket propellant grain structure integrity test method and device
  • Large-scale solid rocket propellant grain structure integrity test method and device

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] A method for testing the structural integrity of the grain column of a large-scale solid rocket motor is characterized in that: a controllable bursting diaphragm group is used to realize the rapid opening of the charging channel for the structural integrity detection of the grain column of the solid rocket motor.

[0030] like figure 1 As shown, a large-scale solid rocket motor grain structure integrity test device is characterized by including: a test engine, a controllable bursting diaphragm group 6, an engine joint 4, a main circuit solenoid valve 7, a high-pressure air source assembly, a pressure Sensor 11, where:

[0031] The controllable bursting diaphragm group 6 is composed of a metal bursting diaphragm, an electrical pyrotechnic product, and a pressure sensor, and is arranged at the joint of t...

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Abstract

The invention relates to a solid rocket engine structure integrity test method, in particular to a large-scale solid rocket engine propellant grain low-temperature structure integrity test method. According to the technical scheme, the large-scale solid rocket engine propellant grain structure integrity test method and device are achieved, rapid opening of an air inflation channel for detecting the solid rocket engine propellant grain structure integrity is achieved by utilizing a controllable bursting diaphragm group, the method and device are suitable for a large-scale solid rocket engine, the consumption of a formal product can be avoided, and the air inflation channel for detecting the solid rocket engine propellant grain structure integrity can be quickly opened.

Description

technical field [0001] The invention relates to a test method for a solid rocket motor, in particular to a method for testing the structural integrity of a grain column of a large solid rocket motor. Background technique [0002] When a solid rocket motor is ignited, the grain is subjected to a transient high-pressure shock load. Since the propellant is a viscoelastic material, its high strain rate shows elasticity or even brittleness. At this time, the grain structure is most likely to be damaged, and cracks occur on the inner surface of the grain with the greatest stress. Therefore, the key points and difficulties of solid engine design with grain structural integrity are also the most important work items in the engine development process. At present, the main test methods for structural integrity of engine grains are: [0003] (1) Ignition test method [0004] The ignition test method, that is, the grain structure assessment is carried out through the ignition test, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/96
CPCF02K9/96
Inventor 周伟勇任宁莉郭宇解红雨张治宇陈妮妮许可睿
Owner 中国人民解放军96901部队24分队
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