双火药点火器Y形三通结构输出性能仿真分析  

Simulation Analysis of Output Performance of Y-type Three-way Structure of Double Powder Igniter

作　　者：朱珂 柳洋 何昆[2] 李雪飞 张靖宇 董海平[1] ZHU Ke;LIU Yang;HE Kun;LI Xuefei;ZHANG Jingyu;DONG Haiping(School of Mechanical and Electrical Engineering,Beijing Institute of Technology,Beijing 100081,China;Beijing Aerospace Power Research Institute,Beijing 100076,China)

机构地区：[1]北京理工大学机电学院,北京100081 [2]北京航天动力研究所,北京100076

出　　处：《装备环境工程》2024年第12期9-16,共8页Equipment Environmental Engineering

摘　　要：目的研究燃气发生器双火药点火器Y形三通结构在不同工况下的输出性能。方法基于经典内弹道理论,建立某双火药点火器Y形三通结构内弹道的仿真模型,利用MATLAB软件的Simulink模块,对内弹道仿真模型进行求解,对6种典型工况(低温单点火器正常工作、低温双点火器正常工作、低温双点火器之间相差30 ms点火、低温双点火器中有1个点火器失效、高温单点火器正常工作和高温双点火器正常工作)下输出端口处燃气压力随时间的变化规律进行对比分析,对这6种工况下的稳定燃烧冲量和压力峰值进行定量对比分析。结果在低温条件下,双火药点火器正常工作时,其稳定燃烧冲量为单点火器的1.7倍,有利于燃气发生器中的液氢液氧混合剂的可靠点燃。双火药点火器在相差30 ms点火时,输出性能与双点火器正常工作时差别不大,即同步性影响较小。双点火器的1个点火器失效时,其Y形三通结构稳定燃烧冲量与单点火器相当。在高温条件下,双点火器正常工作时Y形三通结构内的压力峰值为11.99 MPa,未超出Y形三通管的强度范围,有较大的裕度,保证了该双点火器Y形三通的结构可靠性。结论该仿真分析结果可以为燃气发生器双火药点火器Y形三通结构的设计提供参考。The work aims to study the output performance of Y-type three-way structure of gas generator double powder igniter under different working conditions.In this paper,based on the classical interior ballistic theory,an interior ballistic simulation model of a Y-shaped three-way structure of a dual-propellant igniter was established.The Simulink module of MATLAB software was used to solve the interior ballistic simulation model.The gas pressure change law with time at the output port under 6 typical working conditions(The single powder igniter worked normally at low temperature;The double powder igniter worked normally at low temperature;The difference between the two igniters was 30msat low temperature.One of the double igniters failed at low temperature;The single powder igniter worked normally at high temperature;Double powder igniter worked normally at high temperature)was compared and analyzed.The stable combustion impulse and the peak pressure under these 6 working conditions were quantitatively compared and analyzed.The stable combustion impulse of the double powder igniter was about 1.7 times that of the single powder igniter,which was beneficial to the reliable ignition of the liquid hydrogen liquid oxygen mixture in the gas generator.When the dual-powder igniter was ignited at a difference of 30ms,its output performance was not much different from that of the double powder igniter when it worked normally,that was,the double powder igniter had better synchronization.When one igniter of the double powder igniter failed,the stable combustion impulse of the Y-type three-way structure was equivalent to that of the single powder igniter.Under high temperature conditions,the peak pressure in the Y-type tee structure of the double powder igniter was 11.99 MPa when it worked normally,which did not exceed the strength range of the Y-type tee tube,and had a large margin space,which ensured the reliability of the Y-type tee structure of the double igniter.The simulation results of this paper can provide reference for t

关 键 词：燃气发生器 内弹道理论 双火药点火器Y形三通结构 Simulink模块 稳定燃烧冲量 压力峰值 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]