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[1]李舒欣,胡洪波,许红卫.甲烷/氧气爆震波点火器爆震波形成过程[J].火箭推进,2021,47(03):26-34.
　LI Shuxin,HU Hongbo,XU Hongwei.Research on detonation wave formation of methane/oxygen detonation wave igniter[J].Journal of Rocket Propulsion,2021,47(03):26-34.
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甲烷/氧气爆震波点火器爆震波形成过程

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 47 期数: 2021年03期 页码: 26-34 栏目: 研究与设计 出版日期: 2021-06-30
Title:
Research on detonation wave formation of methane/oxygen detonation wave igniter
文章编号:
1672-9374(2021)03-0026-09
作者:
李舒欣; 胡洪波; 许红卫
西安航天动力研究所 液体火箭发动机技术重点实验室,陕西 西安 710100
Author(s):
LI Shuxin; HU Hongbo; XU Hongwei
Science and Technology on Liquid Rocket Engines Laboratory,Xi'an Aerospace Propulsion Institute, Xi'an 710100,China
关键词:
爆震波;  火焰加速;  甲烷;  液体火箭发动机
Keywords:
detonation wave;  flame acceleration;  methane;  liquid rocket engine
分类号:
V231.2
文献标志码:
A
摘要:
为了解液氧甲烷火箭发动机爆震波点火器工作特性,采用实验方法研究了低供给压力下甲烷/氧气爆震波的形成过程,分析了点火时序、混合比等参数对爆震波参数的影响、缓燃向爆震转变增强措施对爆震波形成过程的作用规律以及结构尺寸对弯管中爆震波参数的影响。研究结果表明:1)不同当量比下,甲烷氧气爆震管点火器的工作状态可分为爆震、快速火焰、慢速火焰、全局淬熄和未点火等状态。阻塞比在试验涉及的0.12至0.42范围内时,随着阻塞比的增大,能产生爆震的当量比范围逐渐扩大; 当量比在1.5附近,阻塞比的大小对是否能形成爆震影响不大。2)弯管及管中弹簧障碍物对于压力高、速度快,接近于爆震波的火焰表现为抑制作用; 对于压力低、传播速度慢的缓燃火焰,则能起到增强作用。
Abstract:
In order to understand the working characteristics of detonation wave igniter for LOX/CH4 rocket engine,the detonation wave formation of methane/oxygen under low supply pressure was investigated by experiment.The effects of ignition sequence,mixing ratio and other parameters on detonation wave parameters,the effect of enhancement measures of deflagration to detonation transition on detonation wave formation,and the effect of structure size on detonation wave parameters in bent pipe were analyzed.The results show that: 1)Under different equivalent ratios,the working status of the detonation wave igniter can be divided into detonation,fast flame,slow flame,global quenching and unignited states.When the blockage ratio is in the range of 0.12～0.42,the range of equivalent ratio that can produce detonation increases with the increased blockage ratio.When the equivalent ratio is about 1.5,the blockage ratio has little effect on the formation of detonation wave.2)U shape tubes and the spring in it have suppression effect on the flame for the detonation wave with high pressure and fast speed.In addition,for the flame with low pressure and slow propagation speed,it can play an enhanced role.

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相似文献/References:

[1]郭红杰,梁国柱,马彬,等.爆震波点火器在氢氧塞式喷管的工程应用[J].火箭推进,2006,32(06):16.
　Guo Hongjie,Liang Guozhu,Ma Bin,et al.Engineering application of detonation wave igniter on hydrogen-oxygen aerospike nozzle engine[J].Journal of Rocket Propulsion,2006,32(03):16.

备注/Memo

收稿日期：2020-10-15; 修回日期:2020-11-15
基金项目：国家自然科学基金(11602186)
作者简介：李舒欣(1992—),女,硕士,研究领域为液体火箭发动机热过程。

更新日期/Last Update: 1900-01-01