航天推进技术研究院主办
[1]付文娟,曾庆轩,李明愉.一种燃气发生器的变推力设计与仿真[J].火箭推进,2019,45(06):38-44.
FU Wenjuan,ZENG Qingxuan,LI Mingyu.Variable thrust design and simulation of a gas generator[J].Journal of Rocket Propulsion,2019,45(06):38-44.
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FU Wenjuan,ZENG Qingxuan,LI Mingyu.Variable thrust design and simulation of a gas generator[J].Journal of Rocket Propulsion,2019,45(06):38-44.
一种燃气发生器的变推力设计与仿真
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
45
期数:
2019年06期
页码:
38-44
栏目:
研究与技术
出版日期:
2019-12-25
- Title:
- Variable thrust design and simulation of a gas generator
- 文章编号:
- 1672-9374(2019)06-0038-07
- Keywords:
- variable thrust drive; gas generator; structural design; verification test; numerical simulation
- 分类号:
- V421.4
- 文献标志码:
- A
- 摘要:
- 为了满足采用单一发射系统对不同重量不同初速导弹的发射要求,设计了一套包含多根产气药柱、可自适应点火、可变推力的燃气驱动装置。首先,根据驱动重量和速度要求,初步设计产气药柱对其产气性能及其作用的可靠性进行实验,为后续优化结构设计及仿真模拟提供依据; 其次,采用数值仿真模拟的方法,研究不同作用药柱个数、作用时间及弹体质量,发射系统内部压强和弹体运动随时间的变化情况。仿真结果表明:驱动条件相同,弹体质量越重,其在发射筒出口处的速度越小、所用时间也越长; 同一弹体,作用药柱个数越多,弹体在发射筒出口处的速度越大、所用时间也越短; 为防止作用药柱个数过多导致发射筒内压强过大,采用时序控制装置对其进行时序控制,从不同作用药柱的时序组合中获取最优方案。仿真及实验结果表明,所设计的燃气发生器药柱燃烧性能好、可自适应点火、可为系统提供可变推力,其设计基本合理。
- Abstract:
- For meeting the launch requirements of a single launch system for missiles with different initial velocities and different weights, a set of gas generator with multiple gas-producing grains, adaptive ignition and variable thrust was deigned.Firstly, according to the missile weight and its velocity requirements, the gas-producing grain was designed preliminarily.Its gas production performance and reliability were tested, providing the basis for the subsequent optimization of structural design and simulation.Then, a numerical simulation method was used to explore the changes of the missile weight, the grain number, the acting time, the internal pressure of launch system and the projectile movement with time.The simulation results show that if the driving conditions are same, the heavier the projectile is, the smaller the velocity is at the exit of the launch tube and the longer the time is.For the same projectile, the more the number of acting grains is, the faster the projectile is at the exit of the launch tube and the shorter the time it takes.In order to prevent the excessive pressure in the launch tube caused by the number of acting grains, the time sequence control device is used to control the time sequence, and the optimal scheme is obtained from the time sequence combination of different acting grains.Simulation and experimental results show that the designed gas generator grain has good combustion performance, adaptive ignition and variable thrust, and its design is basically reasonable.
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备注/Memo
收稿日期:2019-04-15; 修回日期:2019-06-09基金项目:国家自然科学基金(11872013)作者简介:付文娟(1992—),女,硕士,研究领域为弹射系统整体设计
更新日期/Last Update:
2019-12-20