流量可调燃气发生器在导弹起竖装置上的应用研究

Application of Flow Adjustable Gas Generator on Missile Erection Device

关键词:  导弹  燃气发生器  液压系统  一体化计算  流量调节  变喉面  快速起竖  气液联合制动

Key words:  Missile  Gas generator  Hydraulic system  Integrated simulation  Flow regulation  Variable nozzle  Rapid erection  Combined gas-liquid braking

摘要:

车载导弹液压起竖装备因安装空间狭小、装机功率受限导致起竖时间长的问题难以解决。为提高起竖速度，设计了基于流量可调燃气发生器的起竖动力装置，建立了燃气发生器/液压系统/导弹一体化计算数学模型，对比分析了定喉面和变喉面两种工作模式下的起竖特性。计算结果表明：定喉面流量不可调工作模式，不能适应起竖变负载特性，无法保持导弹匀速运动；变喉面流量可调工作模式，可实现导弹平稳起竖，但无法完成减速制动，会对系统造成振动与冲击。提出气液联合分段控制策略：起竖前段，采用燃气流量调节阀控制燃气流量输出，实现负载快速启动，保持负载匀速起竖；起竖后段，采用液压流量调节阀控制油液流量输出，完成负载减速制动，保证负载平稳停靠。新型流量可调燃气发生器动力装置可实现导弹16s快速、平稳起竖，为导弹起竖装备的升级改造提供参考依据。

Abstract:

Due to the limited installation space and installed power， it is difficult to solve the problem of long erection time for the vehicle borne missile erection device. In order to improve the erection speed， a power plant based on flow adjustable gas generator was designed. A mathematical model was established， which integrated equations of gas generator， hydraulic system and missile. The two working modes of constant throat and variable throat and their dynamic characteristics were compared and analyzed. The results show that the power plant cannot adapt to the variable load characteristic of erection device in the constant throat mode， which makes the missile cannot keep moving at a constant speed. The power plant can achieve stable acceleration， but cannot complete deceleration and braking in the variable throat mode， which causes a shock to the system. A gas-liquid combined control strategy is proposed. In the previous stage， a gas flow control valve is adopted to achieve rapid start-up and uniform motion. In the later stage， an oil flow control valve is adopted to complete deceleration， braking and smooth docking. The new type power plant can realize rapid and stable erection in 16s， which can provide an important reference for upgrading of the missile erection equipment.