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Investigation on drag-reduction technology of rocket kerosene(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2017年06期
Page:
32-37
Research Field:
研究与设计
Publishing date:

Info

Title:
Investigation on drag-reduction technology of rocket kerosene
Author(s):
DU Zonggang;  ZHU Chengcai;  WU Jin;  SHAN Shiqun;  YU Xinli;  SHI Xuemei; FU Quanjun;  HAN Wei
Xi'an Aerospace Propulsion Test Technique Institute, Xi'an 710100, China
Keywords:
rocket kerosene;  drag reducer;  flow resistance;  JZM-7
PACS:
V511-34
DOI:
-
Abstract:
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 influencing 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 Φ4 straight pipe.

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