火箭煤油降阻技术研究  

Investigation on drag-reduction technology of rocket kerosene

作　　者：杜宗罡[1] 朱成财[1] 吴金[1] 单世群[1] 于忻立 史雪梅[1] 符全军[1] 韩伟[1] 

机构地区：[1]西安航天动力试验技术研究所,陕西西安710100

出　　处：《火箭推进》2017年第6期32-37,共6页Journal of Rocket Propulsion

基　　金：装发联合基金项目(6141B06260101)

摘　　要：对3种火箭降阻煤油在管路中流阻特性进行试验研究。与火箭煤油相比,试验用降阻煤油的密度相近(20℃,0.832 3 g/cm3),粘度升高(20℃,2.17~2.77 m Pa·s)。通过管路流阻特性理论计算和试验,验证了降阻煤油在流阻测试试验系统各组件时的实际降阻效果,并对影响降阻效果的因素包括降阻煤油类型、直管管径、流体流速及降阻剂浓度等进行试验考察。试验结果表明,使用相同降阻煤油,在同样流量下,直管管径越小,流速越高,降阻率越高;在同样管径下,流速越高,降阻率先快速升高后缓慢降低;使用相同降阻剂,随着煤油中降阻剂浓度的升高,降阻效率先快速升高后趋于平缓;3种降阻煤油中配方为JZM-7的降阻效率最高,与火箭煤油相比,JZM-7在Φ4直管中流速为54.748 m/s时降阻率为75.05%。The characteristics of flow resistance in pipeline of kerosene with three drag reducers was researched by experiments. The density of drag reducing kerosene （DRK） is 0. 832 3 g/cm3 （20 ℃ ）, and its viscosity is ranging from 2. 17 mPa · s to 2.77 mPa · s （20 ℃ ） . Factors influen- cing drag reduction, such as types of DRK, concentration of drag reducers, straight pipe diameter, flow velocity, are discussed and evaluated. The results as follows： 1 ） under the condition of same flux, the smaller the diameter of the straight pipe is, the higher the flow velocity and the drag reduction rate become ; 2） under the condition of same diameter, the drag reduction rate rises fast and then descends slowly as the flow velocity rises higher; 3） with the same drag reducer, the drag reduction rate rises quickly and then becomes flatting with the increase of concentration of drag reducer in rocket kerosene ; 4） JZM-7 has the highest drag reduction rate among the three types of drag reduction kerosene formulas. Compared with pure kerosene, the drag reduction rate of JZM-7 is 75.05% at the flow velocity of 54. 748 m/s in Ф4 straight pipe.

关 键 词：火箭煤油 降阻剂 流阻 JZM-7 

分 类 号：V511-34[航空宇航科学与技术—航空宇航推进理论与工程]