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Solid rocket engine ground test bench and temperature control method

A technology of ground testing and solid rockets, applied in the field of engine testing, can solve problems such as poor operation and engine temperature changes, and achieve the effects of cost saving, uniform temperature, and reduced transfer process

Pending Publication Date: 2022-05-31
宁波天擎航天科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the engine temperature will change, and the engine will be in high temperature or low temperature first, and the preparation work will bring a series of troubles (not easy to operate)

Method used

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  • Solid rocket engine ground test bench and temperature control method
  • Solid rocket engine ground test bench and temperature control method
  • Solid rocket engine ground test bench and temperature control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1, when the engine 5 needs to be kept warm, the heat preservation box is closed, the heat dissipation and heat preservation coil 6 heats or cools the heat preservation box through the valve and the heating system, and the engine 5 is kept warm according to the test requirements. After the insulation is completed, open the incubator, remove the insulation wall at the nozzle, and remove the other side walls depending on the situation, and carry out the ignition test for engine 5.

[0070] Before the engine 5 is tested on the ground, the engine 5 is kept warm. Adjust the engine mount 2 to an appropriate position, and place the test engine 5 on the engine mount 2 . Paste the temperature sensor on the corresponding position on the outer surface of the test engine 5, adjust the position of the thrust sensor 4 on the thrust bracket 3, and align the thrust sensor 4 with the test engine 5, so as to facilitate the subsequent measurement of thrust. Close the incubator....

Embodiment 2

[0071] Embodiment 2, when the temperature is close to normal temperature -20 ℃ -30 ℃ and when the temperature is greater than 30 ℃, this cycle can be used, and the working medium circulation path of the electric heating wire can be activated as follows: heat dissipation (cooling) coil 6 - the first Three-way valve 7 - heating and cooling system 10 - second three-way valve 8, start the compressor 11 for conventional refrigeration (heating);

Embodiment 3

[0072] Embodiment 3, when the required temperature is lower than -20°C, the working medium circulation path is: heat dissipation (cooling) coil 6 - first three-way valve 7 - liquid nitrogen tank 18 - second three-way valve 8, Cool with liquid nitrogen. After the heat preservation is completed, open the heat preservation box, and remove a fan of the heat preservation layer 9 near the nozzle outlet of the engine 5. Whether the side walls of the other heat preservation layers 9 are removed depends on the situation.

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Abstract

The invention discloses a solid rocket engine ground test bench and a temperature control method, and relates to the technical field of engine tests. A heating and refrigerating system is arranged on the outer wall of one side of a heat preservation box body, a first three-way valve is arranged at one end of the heating and refrigerating system, a second three-way valve is arranged at the other end of the heating and refrigerating system, the first three-way valve is connected with one end of a cooling pipe, and the cooling pipe penetrates through one side of the heat preservation box body and is arranged in the inner wall of the heat preservation box body in a surrounding mode to form a coil pipe. The other end of the cooling pipe is connected with the second three-way valve; a circulating medium and a test rack are arranged in the cooling pipe in a flowing manner; the test rack is installed in the heat preservation box body, the test rack comprises a test bench base, an engine support and a thrust support, the engine support and the thrust support are both installed on the test bench base, and the output end of the thrust support is connected with the engine support; during use, the control acquisition system of the heat preservation cabin and the control acquisition system of the engine test bed can be integrated in one set of system.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a solid rocket motor ground testing test bed and a temperature control method. Background technique [0002] The engine test and test technology of solid rocket motor (aerospace) is an important part of solid propulsion technology. Before the test flight of the aerospace engine, it is necessary to do a thorough verification test on the ground. As the engine matures, the application of the engine becomes more and more extensive. [0003] The use environment of the solid rocket motor includes the four seasons of spring, summer, autumn and winter, as well as various environments such as the ground, high altitude, and plateau. Therefore, the engine does not only work in the normal temperature environment, but also often in high temperature or low temperature environments. Therefore, it is necessary to In the engine ground test, the high temperature or low temperature is store...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/14G01M15/02G01M99/00B65D81/18
CPCG01M15/14G01M15/02G01M99/002B65D81/18
Inventor 胡向柏杨威李海涛安海军王彬平尹帅
Owner 宁波天擎航天科技有限公司