火箭发射中的紧急关机研究

火箭发射在点火过程中发生故障时通常采用紧急关机来保证发射安全，其中最常用的是定时紧急关机。本文从发射安全入手，在研究发动机组成原理、点火关机方式、故障模式的基础上，通过计算，指出定时紧急关机存在缺少对点火过程的实时监控，当出现不对称点火故障时不能及时关机的隐患。在此基础上提出了通过对火箭点火过程的实时监控和故障判别，发生故障后适时关机的解决思路。

A study on urgent-off while carrier rocket launching

When carrier rocket isn't ignited normally,urgent-off scheme was usually adopted to make it safe.In this condition timing urgent-off before taking off was firstly considered.In this paper,we proceed from the study of launching safety. After analyzing the engine's principle,the engine's ignition and cut off scheme,and the fault's model,we pointed out that real time monitor during ignition is ignored in the timing urgent-off scheme, and the engine couldn't be cut off in time while the engine was ignited unsymmetrically.It raised a new method that the carrier rocket should been watching and controlling timely, and the faults should be distinguished while the engine igniting,and the engine should be cut off properly while ignition was out of order.