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[1]施 伟,关 亮,王子模,等.NOFBx推进剂的火焰传播特性试验及分析[J].火箭推进,2021,47(05):92-98.
　SHI Wei,GUAN Liang,WANG Zimo,et al.Flame propagation characteristics test and analysis of NOFBx propellants[J].Journal of Rocket Propulsion,2021,47(05):92-98.
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NOFBx推进剂的火焰传播特性试验及分析

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 47 期数: 2021年05期 页码: 92-98 栏目: 测控与试验 出版日期: 2021-10-28
Title:
Flame propagation characteristics test and analysis of NOFBx propellants
文章编号:
1672-9374(2021)05-0092-07
作者:
施 伟1; 2; 关 亮1; 2; 王子模1; 2; 蒋榕培3; 徐 森4
(1.上海空间推进研究所,上海 201112 2.上海空间发动机工程技术研究中心,上海 201112 3.北京航天试验技术研究所,北京 100074 4.南京理工大学 化工学院,江苏 南京 210094)
Author(s):
SHI Wei1; 2; GUAN Liang1; 2; WANG Zimo1; 2; JIANG Rongpei3; XU Sen4
(1. Shanghai Institute of Space Propulsion,Shanghai 201112,China 2. Shanghai Engineering Research Center of Space Engine,Shanghai 201112,China 3. Beijing Aerospace Propulsion Institute,Beijing 100074,China 4.School of Chemical Engineering,Nanjing Unive
关键词:
NOFBx推进剂 火焰传播特性 毛细管 试验及分析 爆轰速度
Keywords:
NOFBx propellant flame propagation characteristics capillary test and analysis detonation velocity
分类号:
V312
文献标志码:
A
摘要:
为了解决NOFBx推进系统中存在的火焰向推进剂供应端传播(即回火)的安全性问题,设计搭建了NOFBx推进剂火焰传播特性试验平台,对比了5种不同配方的预混气体在石英玻璃管和不锈钢毛细管中的火焰传播特性,并采用高速摄像仪对火焰传播过程进行了全程记录以得到火焰锋面的行进规律。结果表明,通过对比试验得到几种不同配比的NOFBx推进剂在毛细管中的防回火临界直径范围,其中9:1配比的N2O-C2H4预混气体在长度1 000 mm的毛细管中的防回火临界直径在0.5～0.7 mm之间,而添加一定比例的稳定剂后防回火临界直径发生不同程度的增大,这意味着稳定剂的加入对预混气体的火焰传播特性产生显著影响。在研究范围内,预混气体配方变化引起的试验实测爆轰速度的变化趋势与C-J理论爆轰速度相一致,即稳定剂的添加量越大,其对预混气体的火焰传播特性抑制效果越强。
Abstract:
In order to solve the safety problem of flame propagation back to propellant supply in NOFBx propulsion system,which is called flash-back,an experimental platform for flame propagation characteristics of NOFBx propellant was designed and built. The flame propagation characteristics of 5 different premixed gases in quartz glass tubes and stainless-steel capillaries were compared,and the whole process of the flame propagation was recorded by a high-speed camera to get the moving law of the flame front. The results showed that the critical diameter range of anti-flash-back in the capillary tube of several NOFBx propellants with different ratios is obtained through comparative experiments. The critical diameters of the 9:1 N2O-C2H4 premixed gases in the capillary tube with a length of 1 000 mm were between 0.5 mm and 0.7 mm,and the critical diameters increased in varying degrees after adding a certain proportion of stabilizer. This means that the addition of the stabilizer has a significant effect on the flame propagation characteristics of premixed gases. In the research scope of this paper,the change trend of experimental detonation velocity caused by the change of premixed gases formula is consistent with the theoretical C-J detonation velocity,that is,the greater the amount of stabilizer,the stronger the inhibition effect on flame propagation characteristics of premixed gases.

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备注/Memo

基金项目:上海市青年科技英才杨帆计划(21YF1430200)
作者简介:施伟(1991—),男,博士,研究领域为空间姿轨控液体火箭发动机。

更新日期/Last Update: 1900-01-01