凝胶推进剂模拟液静电雾化行为规律研究  

Study on behavior rules of electrostatic atomization for gelled propellant simulant

作　　者：吴德志 孙瑜 王勇 罗毅辉 赵扬 陈沁楠 王凌云 洪流 孙道恒 WU Dezhi;SUN Yu;WANG Yong;LUO Yihui;ZHAO Yang;CHEN Qinnan;WANG Lingyun;HONG Liu;SUN Daoheng(School of Aerospace Engineering, Xiamen University, Xiamen 361102, China;Science and Technology on Liquid Rocket Engine Laboratory, Xi＇an Aerospace Propulsion Institute, Xi＇an 710100, China)

机构地区：[1]厦门大学航空航天学院,福建厦门361102 [2]西安航天动力研究所,液体火箭发动机技术重点实验室,陕西西安710100

出　　处：《火箭推进》2018年第3期54-61,共8页Journal of Rocket Propulsion

基　　金：国防科技重点实验室基金项目(61427040203162704004)

摘　　要：针对凝胶推进剂雾化困难的问题,引入静电喷射技术雾化凝胶推进剂。以水凝胶模拟液为介质,探究静电雾化技术的可行性及试验条件,当收集距离2~5 cm、供液速率10~30μL/h时,凝胶模拟液可实现稳定雾化,收集液滴直径小于100μm,散射角分布在8°~36°之间,收集液滴直径和散射角均随收集距离的增大和针管直径的减小而减小;同样条件下,凝胶粘度越小,散射角和雾化液滴直径越小。在此基础上,针对单针管推力小的问题,分析使用多针管喷头进行凝胶推进剂静电雾化的可行性及其雾化区域分布,结果表明2号凝胶模拟液用于多喷头雾化可得到良好的雾化区域分布,适用于凝胶推进系统之中。In view of the atomization difficulty of gelled propellant,electrostatic injection technology was introduced to atomize gelled propellant. The hydrogel simulant was taken as a medium to investigate the feasibility and experimental conditions of the electrostatic atomization technology. When the collection distance is 2 - 5 cm and the liquid flow rate is and 10 - 30 μL/h,the gelled simulant can achieve steady atomization. The diameter of collected droplets is less than 100 μm and the jet-spread angle distribution is 8° - 36°. Meanwhile,the diameter of atomization droplets and the jet-spread angle decrease with the increase of collection distance and the decrease of nozzle diameter. Under the same conditions,the lower the viscosity of the gel is,the smaller the jet-spread angle and the diameter of atomization droplet become. On this basis,the feasibility of multi-nozzle structure to atomize the gelled propellant and the dis-tribution of atomization area were analyzed for the problem of small thrust from a single nozzle. The results show that the No. 2 gelled simulant used in the multi-nozzle structure can obtain a good distribution of atomization area,which is more suitable for gelled propulsion system.

关 键 词：凝胶推进剂 静电雾化 雾化液滴 散射角 

分 类 号：V439-34[航空宇航科学与技术—航空宇航推进理论与工程]