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[1]王煜锟,王玫,张锋,等.气氧/气甲烷火炬点火器设计及试验[J].火箭推进,2022,48(03):57-62.
　WANG Yukun,WANG Mei,ZHANG Feng,et al.Design and experimental study of gas oxygen/methane torch igniter[J].Journal of Rocket Propulsion,2022,48(03):57-62.

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气氧/气甲烷火炬点火器设计及试验

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 48 期数: 2022年03期页码: 57-62 栏目: 研究与设计出版日期: 2022-06-22

Title:: Design and experimental study of gas oxygen/methane torch igniter

文章编号:: 1672-9374(2022)03-0057-06

作者:: 王煜锟; 王玫; 张锋; 冯建畅; (西安航天动力研究所,陕西西安710100)

Author(s):: WANG Yukun; WANG Mei; ZHANG Feng; FENG Jianchang; (Xian Aerospace Propulsion Institute, Xian 710100,China)

关键词:: 液氧/甲烷发动机火炬点火器燃烧室试验研究

Keywords:: liquid oxygen/methane rocket engine torch igniter combustion chamber experimental study

分类号:: V433-34

文献标志码:: A

摘要:: 针对某型液氧/甲烷火箭发动机,为寻求多次使用的点火器,提出了变结构气氧/气甲烷火炬式点火器设计方案。根据设计要求及技术指标,对点火器进行了变结构、变缩进长度及变混合比试验,验证了点火器设计的可靠性。试验结果表明:混合比越大,燃烧室压强越大,出口补燃情况不发生改变缩进长度的变化不影响燃烧室压强及出口补燃情况的变化排放甲烷与出口富氧燃气的掺混,能有效地促使出口补燃发生,其中收缩式出口能有效促进掺混点火导管直径能有效改变出口富氧燃气速度,出口富氧燃气速度降低能有效地促使排放路甲烷与出口燃气掺混,有利于稳定燃烧。

Abstract:: For a liquid oxygen/methane rocket engine, in order to develop an igniter for multiple uses, a design scheme of variable structure gas oxygen/gas methane torch igniter was proposed.According to the design requirements and technical indexes, the tests of variable structure, variable indent length and variable mixing ratios were carried out to verify the reliability of the igniter design.The experimental results show that the higher the mixing ratio is, the higher the combustion chamber pressure is, while the secondary combustion at the outlet does not change.The change of indent length does not affect the combustion chamber pressure and the afterburning at outlet is similar.The mixing of the discharged methane and the oxygen-enriched fuel gas at the outlet can effectively promote the secondary combustion at the outlet, and the shrinkage outlet can effectively enhance the mixing.The diameter of the ignition duct can effectively change the outlet speed, and the decrease of the outlet speed can effectively promote the mixing of methane in the discharge path and the central gas, which is conducive to stable combustion.

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备注/Memo

收稿日期:2021-08-31 修回日期:2021-10-16
基金项目:国家级重点实验室基金(614270401041701)
作者简介:王煜锟(1997—),男,硕士,研究领域为液体火箭发动机系统仿真。

更新日期/Last Update: 1900-01-01