基于LabVIEW的固体火箭发动机直列式点火实验系统设计  

In-line ignition experimental system design on the basis of Labview platform

作　　者：张喜红 袁士伟[1] 陆吉玺[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《安全与环境学报》2009年第6期125-127,共3页Journal of Safety and Environment

摘　　要：固体火箭发动机点火装置是固体火箭的重要组成部分,它必须在极短的时间内可靠地点燃发动机主燃药,使发动机安全稳定的工作。直列式点火系统应用于固体火箭发动机上,极大地提高了发动机的可靠性。完整的直列式钝感点火系统由直列式全电子安全与解除保险装置、脉冲功率装置、冲击片点火管组成。针对这一系统,利用Labview设计一个可视化的固体火箭发动机直列式点火实验控制系统,该系统通过PC机可与单片机进行串口通信,单片机按照安全解保时序向直列式全电子安全与解除保险装置传输上电信号,当解保时序正确且接收到高压监测信号时触发点火管,同时采集功率脉冲装置中高压储能电容的电压。试验表明,该系统可准确地按照固体火箭发动机直列式点火时序完成点火实验。The paper is aimed to introduce an in-line ignition experimental system design on the basis of lab-view platform, which can be used for the in-line ignition in solid rocket motor in hoping to improve the performance of the motor. The system under discussion includes some practical software and key circuit subsections, such as direct current power, SCM accessory circuits, serial interface, etc. so as to make the serial communication possible between a PC and a microcontroller. While working, signals can be transmitted to In-Line electronic safety and arming devices from the microcontroller, including the launching environment signal, target discovered signal and ignition command signal. At the same time, the voltage of high-voltage storage capacitor can be collected with the results of the energy transmission displayed on the software interface. In addition, since the system proposed is equipped with secure sequential algorithm, its logic circuitry is in position to send trigger signals so as to ignite the slapper igniter, only when the SCM sends electrified signals to the pulsed power device, the SCM begins to work when it receives its response to the inspective signal （at 2.5 V）. The experiment results of the present paper indicates that the breadboard level components can provide projected benefits in reliability and operational flexibility, with its options for each subsection clearly defined as fully functioning ones to meet the system demand.

关 键 词：航空器结构与设计 火箭发动机 直列式点火 串口通信 点火时序 

分 类 号：V439.2[航空宇航科学与技术—航空宇航推进理论与工程]