摘要发动机是火箭弹的关重部件，且容易发生故障。常见的发动机断裂失效有燃烧室爆裂和弹道异常。通常使用故障树法进行失效分析。以对发动机残骸的分析为主体，包括宏观的分析、微观分析、化学成分及性能分析等辅助以制导舱、战斗部、稳定装置的分析。本次残骸分析的结果故障原因是火箭弹出现了高速转动和摆动。建立以发动机解体为顶事件的故障树，排查各个基本事件，最终发现制导舱的滚转控制异常导致稳定装置发生破坏，弹体出现摆动，最终发动机破坏，火箭弹发生解体。检查同批次的产品，发现设计上未明确电缆固定位置，使得装配过程电缆被挤，使控制信号错乱导致打舵异常，制导舱的滚转控制异常。74511
毕业论文关键词 制导火箭弹、发动机、故障树、失效分析、残骸、滚转控制
毕业设计说明书外文摘要
Title Failure analysis of solid rocket motor case
Abstract The Solid rocket motor is the important component of the rocket projectile and prone to failure。 Case burst and anomaly ballistic are the types of the failure of motor fractures。 Usually fault tree analysis is used to analyse failure。 We focus on the analysis of the engine wreckage, including macro analysis, micro analysis, chemical composition 。 Analysis of auxiliary guidance cabin ,tail and warhead is the auxiliary。 The analysis rocket wreckage shows that high speed rotation and swing appeared。 Set up fault tree which use the disintegration of the engine as the top event, then investigate each basic event, eventually find that the rolling control guidance failure causes the failure of projectile stability, then the projectile began to swing, eventually disintegrated。 Check the same batch of products, the design of the interconnecting cables fixed position is not clear, which makes the of interconnect cables squeeze during the assembly process。 The disorder of the control signal lead to abnormal move of the tail。 It means roll control guidance failure。
Keywords Guided rocket projectile fault tree failure analysis wreckage , roll control
目 次
1 引言1
1。1 论文的背景及意义1
1。3 论文主要内容及章节安排2
2 固体火箭发动机壳体断裂失效分析基础知识4
2。1 故障树分析4
2。2 金属断裂失效分析基础知识6
2。3 常见固体火箭发动机失效形式8
3 故障的发生9
3。1 某制导子母弹简介9
3。2 故障现象9
4 残骸分析12
4。1 发动机壳体残骸分析12
4。2 制导舱残骸分析23
4。3 战斗部残害分析27
4。4 稳定装置残骸分析31
4。5 残骸分析结论37
5 固体火箭发动机壳体断裂失效分析:http://www.youerw.com/jixie/lunwen_85126.html