kW级立式氧碘化学激光器的初步实验研究

Primary experimental investigation on 1 kW class verti-COIL

实验考察了立式氧碘化学激光器的工作性能。在氯气流量为82 mmol/s,无主稀释气的条件下,输出功率约1.3 kW,化学效率达到16.9%。分别与以氦气和氮气为稀释气的氧碘化学激光器进行了主要参数的比较(He-COIL在氯气流量110 mmol/s时,输出功率为2.4 kW;N2-COIL在氯气流量115 mmol/s时,输出功率为2.6 kW;立式氧碘化学激光器在氯气流量115 mmol/s时,输出功率为1.32 kW),结果表明该COIL装置初步实验结果与传统的He-COIL和N2-COIL相比还存在很大差距。但通过对实验结果的深入分析得知,若进一步降低单重态氧发生器的prτes值,缩短超音速喷管中亚音速段的氧碘混合长度或采用超音速段氧碘混合方式,使该立式氧碘化学激光器在无主稀释气的条件下运行且达到与He-COIL和N2-COIL相当的功率水平是可以实现的。

A verti-COIL with/without primary buffer gases was demonstrated in our laboratory. This verti-CO1L represents the trend of less primary gases than traditional COIL. In the initial experimental stage, an output power of 1.3 kW and a chemical efficiency of 16.9 % were obtained for a chlorine flowrate of 82 mmol/s, and its main parameters were compared with that of HeCOIL （an output power of 2.4 kW and a chemical efficiency of 24% were obtained for a chlorine flowrate of 110 mmol/s） and that of N2-COIL （an output power of 2.38 kW and a chemical efficiency of 22.7% were obtained for a chlorine flowrate of 115 mmol/ s）. Primary experimental investigation indicated that, if the verti-COIL would have further reduced pτres, value in SOG, and shortened I2/O2 mixing length in subsonic section or injected iodine in supersonic section, COILs operating without primary buffer gases, and achieving the He-COIL＇s and N2-COIL＇s capability were feasible.