固体发动机羽烟的激光透过率测试

Laser transmittance measurement technology on plume from solid-propellant engine

为获得羽烟对激光透过率的影响,用烟箱法对2种配方的缩比发动机羽烟在1.06μm、10.6μm激光波段的透过率进行测试。采用1.064μm激光调制发射、接收、数据采集系统对1.06μm激光波段烟雾透过率测试;用黑体、光谱辐射计、数据采集系统可测出2μm^13μm的光学透过率,从中提出10.6μm激光波段烟雾透过率,得到不同推进剂配方、不同烟雾浓度情况下10.6μm光波和1.06μm光波的烟雾透过率测试数据。烟箱1.8 m烟道上的测试数据表明:配方2推进剂优于配方1推进剂,10.6μm光波的烟雾透过率96%~97%大于1.06μm光波的烟雾透过率92%~93%。

The main performance of hyper-velocity kinetic missile and its solid propellants is described. The mechanism of laser attenuation caused by the plume of solid rocket motor is analyzed. The plume transmittance of two solid-propellant formulations was tested by the aid of a smoke-box when the laser wavebands were 1.06 btm and 10. 6μm. The plume transmittance in 1.06 μm laser was tested with 1. 064μm laser modulation emitting, receiving and data acquisition system. The plume transmittance of 10. 6 μm laser was derived after the optical transmittance of 2μm ～13 μm laser was tested with the blackbody radiation source, spectroradiometer and data acquisition system. The tested data indicates that formulation 2 is better than formulation 1, and the plume transmittance 96%～97% of 10. 6 btm laser is higher than that 92%～93% of 1.06 μmlaser.