燃气射流对发射车天线影响分析

The Affection Analysis of Jet Flow to Launch Vehicle

在发射过程中,由于导弹发射时,起竖角不同,喷管处的高温高速燃气对发射车天线的冲刷和烧蚀,不同程度地影响地面通信。文中以某型发射车系统为例,仿真起竖角分别为36°、48°、60°情况下燃气对天线的影响,得出天线上压力变化不大,对发射过程不会产生大的影响;但天线上局部温度瞬时偏高,对发射过程会产生一定程度的影响。

Because of the differences of erection angle during missile launching time, the jet flow in jet pipe which has the properties of high temperature and high velocity, erodes and ablate the antenna of launch vehicle. This affects the communication on ground in different extents. The paper bases on a certain system of launch vehicle, simulating the affections jet flow acting on the antenna with different erection angle （36°48°,60°）. The changes of pressure on antenna are not obvious, and it can not affect the launch clearly. But the temperature on part of antenna is on the high side instantly, and it will influence the launch process.