高压物理学报Issue(2)：191-196,6.DOI:10.11858/gywlxb.2014.02.009
喷管长度对直筒型激光推力器推进性能的影响
Effect of Nozzle Length on the Propulsion Performance of a Cylindrical Thruster
摘要
Abstract
“Ablation mode”laser propulsion works on the counterforce generated during the interaction between high-power laser and propellant carried by thruster.The structural geometry of the nozzle of“ablation mode”laser propulsion thruster has important influence on the propulsion performance.The effect of nozzle length L on propulsion performance was carried out by experiment and numerical simulation.Experimental results indicate that both the momentum coupling coefficient and the specific impulse increase as L increases,but the increasing tendency of momentum coupling coefficient slows down with the increase of L.Considering the effects of both propulsion parameters and weight of thruster,the formula of optimal length of nozzle is derived with the largest velocity increment of the thruster.The thrust-time curves and impulse-time curves are obtained by numerical study using soft-ware FLUENT.The simulation results agree with the experimental results.关键词
激光推进/烧蚀模式/直筒型推力器/喷管长度Key words
laser propulsion/ablation mode/cylindrical thruster/length of nozzle分类
数理科学引用本文复制引用
李龙,王波,唐志平,胡晓军..喷管长度对直筒型激光推力器推进性能的影响[J].高压物理学报,2014,(2):191-196,6.基金项目
国家自然科学基金 （）
