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[1]袁 洁,潘 亮.基于发动机试车时序的某钝感点火器燃烧时间可靠性评估[J].火箭推进,2015,41(03):87-92.
　YUAN Jie,PAN Liang.Reliability assessment of a certain insensitive igniter based on startup time-sequence of rocket engine[J].Journal of Rocket Propulsion,2015,41(03):87-92.
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基于发动机试车时序的某钝感点火器燃烧时间可靠性评估

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 41 期数: 2015年03期 页码: 87-92 栏目: 测控与试验 出版日期: 2015-06-30
Title:
Reliability assessment of a certain insensitive igniter based on startup time-sequence of rocket engine
作者:
袁 洁; 潘 亮
北京航天动力研究所，北京 100076
Author(s):
YUAN Jie;  PAN Liang
Beijing Aerospace Propulsion Institute, Beijing 100076, China
关键词:
钝感点火器; 可靠性评估; 正态分布
Keywords:
insensitive igniter;  reliability assessment;  normal distribution
分类号:
V434-34
文献标志码:
A
摘要:
针对新一代火箭上面级膨胀循环发动机使用的钝感点火器，为评估点火器的可靠性水平，通过点火器验收试验获取的强烈燃烧时间数据和膨胀循环发动机试车获取的起动加速性数据，利用假设检验的方法证明发动机建压时间S和点火器强烈燃烧时间r都呈正态分布状态，根据概率统计理论，其差r-s也为正态分布。采用应力-强度分布干涉理论，分析计算点火器基于发动机试车时序的点火可靠性为0.999 970。根据本文的分析和计算，认为验收的点火器发火性能可靠，能够保证发动机建压的可靠性，点火器强烈燃烧时间能满足发动机系统要求。
Abstract:
To evaluate reliability of the insensitive igniter used in upper stage expander-cycle engine of a new generation launch vehicle, according to high-intensity combustion time data obtained in igniter acceptance test and start-accelerating performance data got during the trial test of expander-cycle engine, the hypothesis testing method was used to prove that pressure-building time S and high-intensity combustion time r are both distributed as normal distribution, and the difference between S and r is also distributed as normal distribution. With stress-strength interference theory, the igniter reliability from calculation based on engine trial test time-sequence is 0.999 970. According to analysis and calculation in this paper, it is considered that the ignition ability of the accepted igniter is reliable, which

参考文献/References:

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备注/Memo

收稿日期：2014-08-12；修回日期：2015-01-09 作者简介：袁洁（1977—），女，工程师，研究领域为液体火箭发动机总装及火工品设计

更新日期/Last Update: 1900-01-01