A multifunctional test device to realize the integrated verification of combustion and heat transfer technology
A test device and technology integration technology, applied in the field of multi-function test devices, can solve problems such as inability to give accurate predictions
Active Publication Date: 2022-03-04
BEIJING AEROSPACE PROPULSION INST
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Problems solved by technology
Due to the deep coupling of the combustion heat transfer process, the current theoretical analysis and numerical calculation cannot give accurate predictions, and it is also necessary to use thermal test measurement and evaluation
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Embodiment Construction
[0023] The present invention proposes a composite function test piece of combustion and heat transfer, such as figure 1 As shown, the injector 1 and the combustion chamber 2 are included, and the injector 1 and the combustion chamber 2 are connected by bolts.
[0024] The injector 1 is composed of an oxidizer chamber and a fuel chamber, the oxidizer chamber is connected to the oxidizer inlet 3, the fuel chamber is connected to the fuel inlet 4, and the ignition source inlet 5 is used to communicate the oxidizer chamber and the fuel chamber; the surface edge of the injector 1 is processed There are 8 vocal chambers. Such as figure 2 As shown, the injector 1 is provided with three rings of nozzles from the center to the outside in the circumferential direction, the innermost ring is composed of a main nozzle 10 located at the center of the injector 1, and the second ring is composed of several main nozzles 10 , the half circle of the third circle is the side area nozzle 6, an...
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A multi-functional test device for realizing the integrated verification of combustion and heat transfer technology, including an injector and a combustion chamber, the injector and the combustion chamber are connected by bolts. The injector is provided with three rings of nozzles from the center to the outside in the circumferential direction, the innermost ring is composed of a main nozzle located at the center of the injector, the second ring is composed of several main nozzles, and the third ring is half a ring. The other half circle is the partition nozzle and the main nozzle arranged at intervals, and the position of the partition nozzle ensures that each partition nozzle is surrounded by three main nozzles. The temperature and pressure measuring points are arranged in the combustion chamber circumference and at different depths of the acoustic chamber. The positions of the measuring points match the positions of the main nozzle, the side area nozzle and the diaphragm nozzle on the injector, so that both the diaphragm nozzle and the diaphragm nozzle can be assessed in one test. The thermal protection performance, the temperature distribution in the acoustic chamber was obtained, and the thermal compatibility effects of the side nozzle, the main nozzle and the chamber wall were compared.
Description
technical field [0001] The invention relates to a multifunctional test device for realizing integrated verification of combustion and heat transfer technology, which belongs to the technical field of liquid rocket engine test. Background technique [0002] Combustion instability has always been a worldwide problem that plagues the development of liquid rocket engine technology. In the development process of almost every high-thrust liquid rocket engine, the problem of unstable combustion will be encountered, especially high-frequency unstable combustion is the most harmful, which may lead to instantaneous ablation of engine components or structural damage. The mechanism of high-frequency unstable combustion of liquid rocket engines has been studied for decades, but no effective general guidelines for injector / combustion chamber design have been formed so far. Troubleshooting engine unstable combustion often requires extensive and expensive full-scale test runs, often requir...
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IPC IPC(8): G01M15/14G01M15/02
CPCG01M15/14G01M15/02
Inventor 丁兆波孙纪国张晋博刘倩许晓勇
Owner BEIJING AEROSPACE PROPULSION INST