摘要
以抛物形和锥形喷管为研究对象,开展了雾化水滴的脉冲式TEA CO2激光推进性能的实验研究。冲量的大小由压电传感器测量得出的推力随时间的变化关系曲线得出。雾化水滴的能量转化效率达到了26.1%,比冲达到了102 s。对于较短的喷管而言,聚焦位置距离喷管顶部越近,推进性能参数越高。喷管构形对推进性能的影响比较明显,抛物形喷管的推进性能优于锥形喷管。
A TEA CO2 laser was employed to ablate atomized droplets for laser propulsion.Parabolic and conic nozzles were chosen for study.Total impulse was derived from the piezoelectric sensor data.Experimental results indicated that specific impulse and internal efficiency were increased to 102 s and 26.1% respectively.For short nozzles,propulsive characteristics increased as focusing site was moved nearer to the top of nozzles.Propulsive characteristics of parabolic nozzles were better than that of conical nozzles.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2011年第1期6-10,共5页
High Power Laser and Particle Beams
基金
国家973项目
空间碎片专项科研项目
关键词
激光推进
雾化水滴
比冲
能量转化效率
laser propulsion
atomized water droplets
specific impulse
internal efficiency
