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Device and method for testing leveling property of solid propellant slurry

A solid propellant and testing device technology, which is applied in measurement devices, flow characteristics, instruments, etc., can solve the problems of easy generation of holes or other defects, affecting the structural integrity of the grain column, and poor leveling performance of the slurry, etc. The effect of small error, novel design and simple structure

Active Publication Date: 2021-04-02
SHANGHAI AEROSPACE CHEM ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the leveling performance of the slurry is not good, it is difficult to level the slurry evenly in the combustion chamber, and it is easy to produce holes or other defects, which will affect the integrity of the column structure
[0004] Leveling is usually judged by measuring the apparent viscosity. Generally, the viscosity is small and the leveling is good, but sometimes there are abnormalities

Method used

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  • Device and method for testing leveling property of solid propellant slurry
  • Device and method for testing leveling property of solid propellant slurry
  • Device and method for testing leveling property of solid propellant slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 Butylated hydroxy propellant slurry leveling test

[0049] Before the test, adjust the position of the central piston 6 to the lowest end by rotating the transmission shaft 1, turn on the power supply of the constant temperature circulating water tank 2, adjust the temperature setting value on the constant temperature circulating water tank 2, and inject the constant temperature water into the sample insulation sleeve through the guide tube 3 8. Form a water circulation through the guide tube 3, so that the temperature of the circulating water in the sample insulation sleeve 8 is the same as the temperature of the slurry;

[0050] Extract the slurry with a sampler, squeeze the slurry into the clean sample pool 7, until the surface of the slurry is flush with the upper end of the dial 5, and cover the heat preservation cover 9;

[0051] After the slurry is installed, the connecting rod 12 is driven to swing by rotating the transmission shaft 1, and the cen...

Embodiment 2

[0055] Embodiment 2 Butylated hydroxy propellant leveling test, formula is the same as embodiment 1

[0056] Before the test, adjust the position of the central piston 6 to the lowest end by rotating the transmission shaft 1, turn on the power supply of the constant temperature circulating water tank 2, adjust the temperature setting value on the constant temperature circulating water tank 2, and inject the constant temperature water into the sample insulation sleeve 8 through the guide tube , the water circulation is formed through the guide tube 3, so that the temperature of the circulating water in the sample insulation sleeve 8 is the same as the temperature of the slurry;

[0057] Extract the slurry with a sampler, squeeze the slurry into the clean sample pool 7, until the surface of the slurry is flush with the upper end of the dial 5, and cover the heat preservation cover 9;

[0058] After the slurry is installed, the connecting rod 12 is driven to swing by rotating t...

Embodiment 3

[0062] Embodiment 3 Azide polyether propellant leveling test

[0063] Before the test, adjust the position of the central piston 6 to the lowest end by rotating the transmission shaft 1, turn on the power supply of the constant temperature circulating water tank 2, adjust the temperature setting value on the constant temperature circulating water tank 2, and inject the constant temperature water into the sample insulation sleeve 8 through the guide tube , the water circulation is formed through the guide tube 3, so that the temperature of the circulating water in the sample insulation sleeve 8 is the same as the temperature of the slurry;

[0064] Extract the slurry with a sampler, squeeze the slurry into the clean sample pool 7, until the surface of the slurry is flush with the upper end of the dial 5, and cover the heat preservation cover 9;

[0065] After the slurry is installed, the connecting rod 12 is driven to swing by rotating the transmission shaft, and the central ...

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Abstract

The invention provides a device and a method for testing the leveling property of solid propellant slurry. The device comprises a transmission unit, a heat preservation unit, a dial (5), a center piston (6) and a sample pool (7). The heat preservation unit is used for carrying out heat preservation on slurry in the sample pool (7), and the transmission unit is used for driving the center piston tomove up and down in an inner hole of the sample pool (7) and pushing out the slurry in the sample pool (7) to enable the slurry to flow on the dial (5) so as to evaluate the leveling performance of the slurry. Compared with the prior art, the testing device has the advantages of being novel in design, simple in structure, easy to operate, adjustable in temperature, convenient to clean and the like, testing data obtained through the testing device and method are small in error, the leveling property of slurry can be judged visually and qualitatively, and powerful support is provided for research, development, design and production of propellants.

Description

technical field [0001] The invention belongs to the technical field of performance testing of composite solid propellants, in particular to a device and method for testing the leveling property of solid propellant slurry. Background technique [0002] The mixing and pouring of the composite solid propellant is a technological process carried out under the flowing state of the propellant slurry. Composite solid propellants are mainly composed of binders, oxidants, curing agents, plasticizers, burning rate additives and other functional additives. They have the characteristics of many components, high solid content, and containing curing agents. It has a complex structure and is a special kind of highly filled suspension system fluid. [0003] The leveling of slurry is a key parameter in the process performance of composite solid propellants. The leveling property of the slurry refers to the slurry characteristics during the process of the slurry leaving the port of the pour...

Claims

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Application Information

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IPC IPC(8): G01N11/00
CPCG01N11/00
Inventor 李京修程连潮毛成立刘婧黄丽萍张丹阳张秀艳张惠坤万代红时志权洪杨陆振超曹凯刘哲昊
Owner SHANGHAI AEROSPACE CHEM ENG INST