冲压发动机C/SiC喷管沉积特性研究

推进技术 ›› 2013, Vol. 34 ›› Issue (12): 1682-1689.

冲压发动机C/SiC喷管沉积特性研究

李志永¹,陈静敏¹,郑日恒^1,2,李立翰^1,2

中国航天科工集团三十一研究所,北京 100074;中国航天科工集团三十一研究所,北京 100074;中国航天科工集团三十一研究所,北京 100074;中国航天科工集团三十一研究所,北京 100074

发布日期:2021-08-15
作者简介:李志永(1975—),男,高级工程师,研究领域为冲压发动机被动热防护。E-mail:zhiylee@163.com

Investigation on Deposit Property of C/SiC Composite Nozzle for Ramjet

The 31st Research Institute of CASIC,Beijing 100074,China;The 31st Research Institute of CASIC,Beijing 100074,China;The 31st Research Institute of CASIC,Beijing 100074,China;The 31st Research Institute of CASIC,Beijing 100074,China

Published:2021-08-15

摘要/Abstract

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 

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

李志永,陈静敏,郑日恒,李立翰. 冲压发动机C/SiC喷管沉积特性研究[J]. 推进技术, 2013, 34(12): 1682-1689.

LI Zhi-yong¹, CHEN Jing-min¹, ZHENG Ri-heng^1,2,LI Li-han^1,2. Investigation on Deposit Property of C/SiC Composite Nozzle for Ramjet[J]. Journal of Propulsion Technology, 2013, 34(12): 1682-1689.

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