脉冲推力器输出性能的影响因素  

Effect factors of output performance for impulse thruster

作　　者：蒋新广[1] 李国新[1] 刘玲[1] 劳允亮[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《固体火箭技术》2010年第2期182-184,195,共4页Journal of Solid Rocket Technology

基　　金：国家安全重大基础研究项目基金资助(513390303)

摘　　要：为了在脉冲推力器设计中获得合理的设计参数,采用推力测试装置直接测量推力器推力的方法,研究了在不同直径喷喉、不同厚度膜片、不同质量主装药下的推力和总冲。喷喉直径由3 mm增大到4.5 mm,在喉径4 mm时推力和总冲最大,表明喉径太大或太小时推力都不能达到最大值。膜片厚度由0.2 mm增大到0.5 mm,推力由325 N变为429 N,总冲由0.161 N.s变为0.216 N.s,表明增加膜片厚度,输出单调增大。主装药量由180 mg增大到420 mg,推力由144 N变为347 N,总冲由0.068 5 N.s变为0.172 N.s,表明增大药量,推力和总冲都增加。In order to obtain the appropriate design parameter of the impulse thruster,the method for measuring the thrust with a test device was used.The thrust and impulse were studied of the thrusters with different diameter of nozzle throat,different thickness of sealed film and different mass of main charge.The diameter of nozzle throat varies from 3 mm to 4.5 mm.The thrust and impulse is maximal in condition of 4 mm nozzle throat.It shows that the thrust will not be maximal if the diameter of nozzle throat is more than 4 mm or less than 4 mm.When the thickness of sealed film varies from 0.2 mm and 0.5 mm,the thrust increases from 325 N to 429 N and impulse increases from 0.161 N·s to 0.216 N·s.The results show that if the thickness of sealed film become heavy,the thrust and impulse increase.When the mass of main charge varies from 180 mg to 420 mg,the thrust increases from 144 N to 347 N and the impulse increases from 0.068 5 N·s to 0.172 N·s.It shows that the thrust and impulse increase along with the increase of the mass of main charge.

关 键 词：脉冲推力器 推力 喷喉 密封膜片 主装药 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程] V435[航空宇航科学与技术—航空宇航推进理论与工程]