| 摘要: |
| 为了探索冲压发动机C/SiC复合材料喷管的沉积特性,从C/SiC喷管不同的型面结构、不同试验状态以及不同的燃烧室状态等方面进行了研究。研究表明:C/SiC复合材料喷管的型面结构对喷管固体颗粒的沉积影响较小,可以忽略；试验状态和燃烧室状态对C/SiC复合材料喷管固体颗粒的沉积影响较大,喷管不容易产生沉积；在高空状态、复合材料燃烧室状态下,喷管扩张段容易产生沉积,且当扩张段欠膨胀时,加剧沉积。 |
| 关键词: 冲压发动机 喷管 沉积特性 复合材料 |
| DOI： |
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| Investigation on Deposit Property of C/SiC Composite Nozzle for Ramjet |
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LI Zhi-yong1, CHEN Jing-min1, ZHENG Ri-heng1,2,LI Li-han1,2
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(1.The 31st Research Institute of CASIC,Beijing 100074,China;2.Science and Technology on Scramjet Laboratory,Beijing Power Machinery Institute,Beijing 100074,China)
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| Abstract: |
| In order to explore deposits property of ramjet C/SiC composite nozzle, investigation has been conducted with different nozzle contours, different test conditions and different chamber status. The results show that nozzle contour has less effects on C/SiC Composite Nozzle’s deposit property,while test condition and chamber status have significant effects on C/SiC Composite Nozzle’s deposit property. The deposition can not be incurred easily under high-pressure test condition, while the deposition can be incurred easily under low-pressure test condition and composite combustion chamber for the ramjet studied. Especially, deposition is serious when the gas of divergent section is under-expanded. |
| Key words: Ramjet Nozzle Deposit property Composite material |
